CN111414448A

CN111414448A - Digitalized processing method for geological disaster field investigation

Info

Publication number: CN111414448A
Application number: CN202010224925.XA
Authority: CN
Inventors: 李崇贵
Original assignee: Sichuan Keruiyuan Information Technology Co ltd
Current assignee: Sichuan Keruiyuan Information Technology Co ltd
Priority date: 2020-03-26
Filing date: 2020-03-26
Publication date: 2020-07-14

Abstract

The invention discloses a digitalized processing method for geological disaster field investigation, which is based on a mobile terminal loaded with a plurality of functional modules according to the related technical standards and requirements of geological disaster investigation and comprises three stages of preparation before investigation, field investigation and result generation; the system provides rapid, convenient and accurate functions of fixed point, data entry, entity sketching, plane section drawing, photographing and the like for geological disaster field investigation technicians, and improves the working efficiency and precision of geological disaster field investigation.

Description

Digitalized processing method for geological disaster field investigation

Technical Field

The invention belongs to the technical field of geological disaster investigation, and relates to a digitalized processing method for geological disaster field investigation.

Background

The field investigation of geological disasters in China still stays at the traditional paper investigation stage, and technicians need to print investigation forms, remote sensing image maps and geological map pieces in advance before field data acquisition, so that the field is inconvenient to carry, the field investigation forms are inconvenient to fill, and the field work under hard conditions is inconvenient. After the field survey is finished, the survey form filled in the field needs to be manually recorded into the electronic form, the task amount is large, the time consumption is long, the data processing usually needs months, and the efficiency is very low. In addition, a standard database is manually established, so that the field types are multiple, and the task is complicated; and (4) producing an electronic photo collection of the investigation points, wherein the investigation points are more, the photos are more and the like.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a digitalized processing method for geological disaster field investigation, which provides a fast and convenient mode for geological disaster field investigation and improves the working efficiency and precision of geological disaster field investigation.

The invention is realized by the following technical scheme:

a digitalized processing method for field investigation of geological disasters is based on a mobile terminal loaded with a plurality of functional modules and comprises three stages of operation of preparation before investigation, field investigation and result generation;

the operation of the preparation stage before investigation comprises:

1) collecting base map data of an area to be investigated, converting the base map data into a unified geographic coordinate system, carrying out format conversion, and importing the base map data into a mobile terminal after the base map data are processed;

collecting current professional investigation data, extracting the professional investigation data, making a field investigation data packet, and importing the field investigation data packet into a mobile terminal;

2) respectively adding a vector diagram, a video diagram and DEM elevation data in the base map data imported into the mobile terminal to a map interface; setting map symbols, map colors and map marks on the added map layer;

the operation of the field survey comprises the following steps:

3) setting a path from the initial position to the position of an investigator through a navigation module or third-party navigation, and recording the walking track of the investigator;

4) after the disaster point location is reached, an investigator judges the type of the disaster point according to the site situation, creates a new task on an operation interface of the mobile terminal, selects the type of the disaster point in a new task popup window, and the mobile terminal provides a corresponding standard spreadsheet and an editable layer according to the selected type of the disaster point; after the type of the survey point is determined, drawing the survey point on a map; secondly, acquiring the coordinate position of a disaster point according to a positioning module, adding a point pattern in a corresponding type disaster point layer after the positioning is determined, adding a record in a layer attribute table, and generating a unique value for the record; then basic information of the investigation point is filled in the basic information frame of the investigation point, and the basic information is stored in an attribute table in the disaster point layer to complete the creation of a new task of the investigation point;

5) selecting the created new task of the survey point, entering a survey point attribute interface, opening an attribute table according to a standardized table for editing, storing after editing is finished, and storing the content into the layer attribute table by the mobile terminal;

6) calling a multimedia module, photographing or shooting through a camera, editing information of shot contents, and storing the information in a specified directory; the mobile terminal associates the unique value of the disaster point with the multimedia shooting storage path and the name;

7) selecting the created new task of the survey point, drawing a plan view, a topographic map and a sectional view through a drawing module, or photographing a hand-drawn picture to generate a picture as an electronic picture; storing the drawn graph in a specified directory; the mobile terminal associates the unique value of the disaster point with the storage path and the name of the plan view and the topographic map sectional view;

8) selecting the created new task of the survey point, entering an entity sketching interface, selecting a point layer, adding an observation point for the survey point and adding observation point attribute information; selecting a line layer, and adding a boundary line for a disaster entity through a drawing module; selecting a middle surface layer, and drawing a threat range and an influence range for the disaster body through a drawing module;

the result generation stage comprises an online mode and an offline mode of operation:

9) and (3) online mode: directly updating the new tasks of the investigation points to a geological disaster investigation database through network transmission;

an off-line mode: exporting the investigation data packet of the new task of the investigation point, and inputting the exported investigation data into the geological disaster investigation database through the geological disaster investigation data input mobile terminal.

Compared with the prior art, the invention has the following beneficial technical effects:

according to the digital processing method for the geological disaster field investigation, provided by the invention, based on the relevant technical standards and requirements of the geological disaster investigation, a GIS (geographic information system) handheld mobile terminal is adopted, basic drawings such as geography and geology and high-precision remote sensing images are integrated, and Beidou/GPS (global positioning system) positioning is combined, so that the functions of quick, convenient and accurate fixed point, data input, entity sketching, plane section drawing, photographing and the like are provided for geological disaster field investigation technicians, and the working efficiency and precision of the geological disaster field investigation are improved.

Online + offline business process management: the system can be connected with a national geological disaster investigation database, and a user can download and obtain historical investigation data in an investigation region and can conduct investigation on the basis of the historical disaster data; the investigation data can be updated to a national geological disaster investigation database through a WIFI or 4G network; and a national standard geological disaster investigation database can be generated by inputting the mobile terminal through the PC terminal. The user can realize the online and offline flow service of the geological disaster investigation business.

Professional and efficient data acquisition: and classified adding survey points are provided through a disaster type selection module, and standardized spreadsheets of landslide, collapse, debris flow, ground collapse, ground cracks, ground settlement, unstable slopes, engineering ground particles, geological environment points and other survey points are built in the disaster type selection module. Paper forms are no longer needed for field surveys, and thus manual entry of paper documents into electronic forms is not needed. And the multimedia module is used for performing a data entry function, providing collection of multimedia data such as photos, audio, videos, sketches and the like, and associating the multimedia data with a survey point. Professional drawing importing can also be carried out, and professional drawings such as plan views, section views, sketch views and evacuation route schematic views in a photo format can be imported and are associated with the survey points.

The invention also provides a point, line and surface combination accurate delineation function through a drawing tool, so that the positioning and information input of auxiliary points of investigation points, observation points of disaster bodies and surrounding topography, landform, deformation signs, hydrology and the like can be conveniently completed; auxiliary lines of investigation points, line drawing and attribute recording of disaster body boundaries, cracks and the like; and (4) checking the auxiliary surface of the point, and sketching and recording attributes of areas such as a disaster body, a threat range, an influence range and the like.

Convenient data storage: the mode can be combined by an online mode, an offline mode and an online and offline mode: and (3) online mode: authorized users are connected to a national geological disaster investigation database through a network, and field investigation data can be directly uploaded to the national database; an off-line mode: the geological disaster investigation data input mobile terminal can be used for inputting field investigation data into a local standard database; an online and offline combination mode: the geological disaster investigation data can be uploaded to a national database in an online mode, and meanwhile, geological disaster investigation data can be input into a mobile terminal to generate a local standard database.

Drawings

FIG. 1 is a schematic diagram of a preparation process of a single data unit in an early stage;

FIG. 2 is a schematic diagram of an early-stage data online preparation process;

FIG. 3 is a schematic view of the operation flow of field investigation;

fig. 4 is a schematic view of survey result processing flow.

Detailed Description

The present invention will now be described in further detail with reference to the following examples, which are intended to be illustrative, but not limiting, of the invention.

Referring to fig. 1 to 4, the digitalized processing method for geological disaster field investigation provided by the invention is based on a mobile terminal loaded with a plurality of functional modules, and comprises three stages of preparation before investigation, field investigation and result generation;

the operation of the preparation stage before investigation comprises:

the operation of the field survey comprises the following steps:

Specifically, the base map data comprise remote sensing image data, geological vector data and DEM elevation data in an investigation region, and information including lithology of an investigation point position, disaster susceptibility, rock type, vegetation coverage, elevation and gradient can be acquired from the base map data, so that a basis is provided for geological disaster investigation;

converting all collected base map data into a unified geographic coordinate system, converting an image map in the base map data into a tif or img format, converting a vector diagram into a shp format, and converting DEM elevation data into a tif format;

and storing the processed base map data in any directory of the mobile terminal.

Specifically, the current-stage professional investigation data is the result of the current-stage geological disaster investigation data, and is a 5-universal investigation database or a 10-ten thousand geological disaster zoning database; establishing a database of an administrative area where an investigation area is located through a geological disaster investigation data entry system, downloading and extracting professional investigation data, and making a field investigation data packet; and importing the field survey data into a fixed directory of the mobile terminal.

Further, the adding of the base map data comprises: calling out a vector diagram in the base diagram data from the vector diagram layer list, adding the vector diagram to a map interface and displaying the vector diagram on a main interface; calling an image map in the base map data from the raster image list, adding the image map to a map interface and displaying the image map on a main interface; calling DEM elevation data in the base map data in an elevation data module, adding the DEM elevation data to a map interface and displaying the DEM elevation data on a main interface;

the setting of the map symbol, the map color and the map annotation comprises layer rendering and layer annotation;

the layer rendering comprises no rendering, simple rendering and multi-value rendering; when no rendering is performed, the color and the line width of a boundary line of the graph are changed, all graph filling colors of the graph layer are transparent, and color filling cannot be performed;

the border line color and the line width of the graph are changed through the graph filling color during simple rendering, all graphs only have one uniform filling color, and the filling color cannot be set independently for each graph;

selecting a color band and a color classification field during multi-value rendering, randomly distributing filling colors for each graph, and modifying the random filling colors through a symbol list so as to change the boundary line color and the line width of the graph;

and the layer marking is carried out through vector layer setting, interested attribute fields are selected, and corresponding field attribute values are displayed for each graph.

Specifically, the track recording adopts sampling according to time intervals or sampling according to distance intervals; and after finishing the track acquisition, connecting the sampling points into a line by the mobile terminal, and displaying the line on the main interface.

Furthermore, different types of electronic forms and layer editions including landslide, collapse, debris flow, ground cracks, ground collapse, ground settlement, unstable slopes, engineering ground particles and geological environment points are supported in the mobile terminal; the method comprises the following steps that (1) investigators judge disaster point types according to actual conditions on site and select new investigation point types;

the map can be drawn by drawing points through a sketching point, a GPS acquisition point, a coordinate drawing point or a manual drawing point.

Specifically, when basic information of the survey point is filled, the mobile terminal assists in acquiring the base map information in the following form:

① coordinate inquiry, namely inquiring longitude and latitude coordinates of a specified point on a map, and acquiring an elevation value of the point through DEM data in a base map;

② distance calculation, calculating the length of line segment composed of multiple points;

③ area calculation, calculating the area of the surface composed of multiple points;

④ azimuth measurement, measuring the azimuth of the line formed by two points;

⑤ slope measurement, measuring the slope between two points;

⑥ background map attributes, and viewing the attribute table of the vector background map graph.

Specifically, when a plan is drawn, a map within a screen range can be captured, and a captured picture can be used as a 'plan';

when a topographic map is drawn, by means of DEM elevation data, a transverse scale, a longitudinal scale, a standard paper size and a standard paper color are set, and a topographic line and a standard paper map are generated by the mobile terminal;

when the section drawing is carried out, a terrain line and the metric paper can be introduced, coordinate axes, lithology, production state and legend are added, and the mobile terminal finishes the section drawing.

Specifically, when the entity draws, the attached points, lines and surface graphs of the survey point can be sketched and the attributes are recorded:

point drawing: after the point map layer is selected, drawing a general observation point by using a drawing tool; after the drawing is finished, opening an attribute table of the observation point, and filling in the attribute of the observation point;

line drawing, namely selecting a line layer, drawing a linear graph by using a drawing tool, opening a line attribute table after the graph is drawn, and filling line attributes;

and (4) drawing a surface, selecting a surface layer, drawing a surface-shaped graph by using a drawing tool, opening a surface attribute table after the graph is drawn, and filling surface attributes.

Further, the drawing tool comprises:

② deleting, selecting the graph, and deleting the existing graph;

② moving points, selecting the graph, dragging any node of the graph, and finishing the graph editing;

③ adding points, selecting a graph, adding a node on any edge of the graph after adding points on the edge;

④ deleting points, namely selecting a graph, clicking any node on the graph, and deleting the point;

⑤ trimming, namely selecting a graph, drawing a trimming range on a screen in any drawing mode, and finishing the modification of the graph;

⑥ line segmentation, selecting the graph, drawing two or more points passing through two sides of the graph on the screen, and segmenting the graph;

⑦ line closing, selecting line graph with at least 3 nodes not on the same straight line, and connecting the line graph end to end;

⑧ merging, selecting two or more graphics, selecting attribute prompt, and completing merging of the selected graphics;

⑨ common edge, selecting two or more graphics, drawing graphics in the selected graphics in any mode, the edge of the newly drawn graphics will be used as the common edge of the selected graphics;

⑩ surface division, selecting two or more graphics with overlapping parts, selecting cutting graphics, and cutting the remaining graphics and the overlapping parts;

scattering: a pattern composed of two or more patterns not overlapped is selected to break up the patterns into independent patterns.

The respective operations will be described in detail below.

1 data preparation

1.1 data Collection

Before the field survey begins, some data in the survey area needs to be collected. There are generally two categories that can be distinguished: base map data and past professional survey data.

The base map data generally includes remote sensing image data, geological vector data (geological map, disaster-prone zoning map, rock-soil body type map) and DEM elevation data in the investigation region. Such materials can be purchased from local geological and mapping departments. The lithology, the disaster incidence degree, the rock mass type, the vegetation coverage, the elevation, the gradient and other information of the investigation point position can be obtained from the base map data, and the information provides a basis for geological disaster investigation.

The current-stage professional investigation data refers to the current-stage geological disaster investigation data result, and is generally 5 ten thousand detail investigation databases or 10 ten thousand geological disaster zoning databases. The 5 ten thousand detailed survey databases or the 10 ten thousand geological disaster zoning databases can be generally obtained from local geological disaster prevention and treatment emergency centers. If no 5 or 10 million district surveys have been conducted locally, there is no need to collect past professional survey data.

1.2, data processing, which comprises base map data processing and past professional data processing.

Base map data processing

1. And converting all the collected base map data into a unified geographic coordinate system, such as a geographic coordinate system of WGS-84, Xian 80, Beijing 54, CGCS2000 and the like.

2. Converting the format of base map data, and converting the image map into a tif or img format; the vector diagram is converted into a shp format; DEM elevation data is converted to. tif format.

3. And copying the processed base map data into a mobile device memory, wherein the base map data can be stored in any directory of the mobile terminal.

Professional survey data processing and data packet making

1. Professional survey data processing and data packet making for single user

The current date in 5 ten thousand detail investigation databases or 10 ten thousand regional investigation databases needs to be recorded into the mobile terminal for processing by using geological disaster investigation data provided by the national geological environment monitoring institute.

a. And using geological disaster investigation data to enter a database of the administrative area where the investigation region is located, wherein the database is created by the mobile terminal.

b. The obtained 5 ten thousand detailed check databases (10 ten thousand partition databases) are imported into a newly-built database, and the 5 ten thousand detailed check databases (10 ten thousand partition databases) are different from the database recorded in the mobile terminal, so that the detailed check database data of the old version needs to be imported into the new database by using a detailed check data import function. (if there are no 5 or 10 thousand databases, this step is skipped over)

c. And (5) professional survey data extraction. And the data downloading function of the geological disaster investigation data input mobile terminal is used, so that the professional investigation data in the database can be extracted and made into a field investigation data packet. The mobile terminal may identify this packet.

d. And transmitting the data packet. And connecting the computer and the mobile terminal through a data line, and copying and pasting the manufactured field survey data packet into the fixed directory of the mobile terminal.

2. On-line user data packet making and professional data processing

An online user can use the data packet made by the geological disaster investigation data entry mobile terminal and can also log in the mobile acquisition mobile terminal, a field investigation data packet is created firstly, the data packet is clicked to enter an investigation interface, the past professional investigation data in a data downloading area is carried out, and the past professional investigation data possibly does not exist in part of the area.

1.3 base map addition

Processing the finished base map data, and adding the base map data to a map interface in a classified manner; the method comprises the following steps:

and adding a vector layer, namely adding vector data in the vector layer list and adding the geological vector map to a map interface.

Adding remote sensing images, namely adding raster images in a local raster image list, and adding processed images to a map interface;

the DEM elevation data is added to the map interface by adding the elevation data.

1.4 base map layer settings

After the vector layer is added, the map symbols are all default single symbols and colors, the display is disordered and not easy to distinguish, and the mobile terminal provides a map symbolization function. In the vector layer list, a user can perform layer rendering and layer labeling on a layer by using a 'vector layer setting' function.

And the layer rendering comprises no rendering, simple rendering and multi-value rendering.

①, no rendering is performed, and in the vector diagram layer setting, the rendering type is selected to be no rendering, the border line color and the line width of the graph can be changed.

② simple rendering, in the setting of vector diagram layer, the rendering type is selected to simply render, and the border line color and line width of the graph are changed.

③ multi-value rendering, in the vector diagram layer setting, the rendering type selects multi-value rendering, filling color is randomly distributed to each graph, the random filling color can be modified through a symbol list, and the border line color and the line width of the graph are changed.

And (4) layer marking, wherein in the setting of the vector diagram layer, an interested attribute field is selected in marking display, the color of a font is modified in marking color, and the size of a text is selected in marking a font size. The mobile terminal displays the corresponding field attribute value for each graphic.

After the indoor data preparation is completed, field investigators can carry out field data acquisition.

And in an online investigation mode and a single machine investigation mode, the automatic selection is carried out according to the requirement.

2.1 navigation and track recording

The investigator carries out field investigation and arrives at the investigation point position from the personnel position, and the mobile terminal provides a navigation function for the user; in order to ensure that the investigators really arrive at the investigation point positions to collect field information, the mobile terminal provides a function of recording walking tracks of the investigators so as to ensure that investigation data are real and reliable.

Navigation can be achieved through self-contained navigation and invoking of a Baidu map or a Gade map.

The navigation target point is selected and determined by ① selecting an existing survey point as a target point, ② taking points on a screen, setting the target point by clicking the screen, ③ inputting point coordinates and inputting longitude and latitude coordinates of the target point to determine the target point, ④ importing a coordinate file, importing the coordinate file, identifying the longitude and latitude coordinates to determine the target point, and ⑤ importing a picture, wherein the picture with the longitude and latitude coordinate information is imported, and the mobile terminal reads the longitude and latitude coordinates to determine the target point.

After the navigation target point is established, the user determines the navigation mode according to whether the route planning is needed. And if the navigation route is needed, calling third-party navigation software, transmitting the target point position to the third-party navigation software by the mobile terminal, and planning the route by the navigation software. The route does not need to be planned, the self-contained navigation of the mobile terminal can be used, and the distance and the direction between the current point and the target point can be displayed through the self-contained navigation of the mobile terminal.

① samples according to time intervals, namely, one point is collected every second, interval time can be set by a user in a self-defined mode, ② samples according to distance intervals, namely, after the investigator walks for each meter, the mobile terminal collects one point, the interval distance can be set by the user in a self-defined mode, after the track collection is finished, the mobile terminal connects sampling points into a line and displays the line on a main interface, and through a track management function, the user can check and export track files.

2.2 categorically adding survey points

The mobile terminal supports classification and addition of 10 different types of investigation points such as landslide, collapse, debris flow, ground cracks, ground collapse, ground settlement, unstable slopes, engineering ground particles, geological environment points and other points (in an image investigation mode, only four types of landslide, debris flow, collapse and engineering ground particles are available). And (4) the investigator judges the type of the disaster point according to the actual situation on site and selects a new investigation point type.

After the survey point type is determined, a drawing tool is used for drawing the survey point, the drawing tool provides methods of 'ten drawing points', 'GPS collection points', 'sitting drawing points', 'manual drawing points' and the like, ① ten drawing points enable a certain point on a map to coincide with a screen central cross hair through a mobile screen, the position of the cross hair coinciding with the certain point on the map is used as a point position, ② GPS collection points acquire the front position through a built-in GPS of the mobile terminal and are used as the point position, ③ sitting drawing points determine the point position through inputting longitude and latitude coordinates, ④ manual drawing points click the screen position by a handwriting pen to determine the point position, and a user can determine the spatial position of the survey point through any one of the methods.

After the spatial position of the survey point is determined, the name, the field number and the geographic position of the disaster point are required to be filled in a popped basic information frame, and after the completion of the filling, the creation of the survey point is completed.

2.3 survey Point information filling

And selecting the created survey points or the existing survey points, entering an attribute interface through an attribute function, and filling in detailed information of the survey points on the attribute interface according to prompts.

The geological disaster investigation point attribute filling needs to refer to base map information, and the mobile terminal provides a plurality of common tools to help a user to acquire the base map information.

① coordinate inquiry, which is to inquire the longitude and latitude coordinates of a certain point on the map and acquire the elevation value of the point if the bottom map has DEM data;

② distance calculation, calculating the length of line segment composed of 2 or more points;

④ azimuth measurement, measuring the azimuth angle (included angle with north direction) of the line formed by two points;

⑤ slope measurement-the slope between two points is measured (DEM data must be present in the base map);

⑥ attribute of base map, viewing attribute table of vector base map graph;

2.4 multimedia data acquisition

After completion of the survey point attribute fill-in, the user can add a multimedia drawing to the survey point in the 'multimedia' tab. Multimedia information is added to the survey point through functions of 'taking a picture', 'recording a video', 'recording an audio' and 'drawing a sketch'; the multimedia interface can also import and delete multimedia icons.

And (3) taking a picture, calling a camera of the mobile terminal by the mobile terminal to take the picture, and adding description information (longitude and latitude of a shooting position, a mirror direction and description information) to the picture after the picture is taken.

And recording the video, and calling a camera of the mobile terminal by the mobile terminal to shoot the video.

And recording the audio, and calling a microphone of the mobile terminal by the mobile terminal to record an audio file.

And the mobile terminal provides a simple sketch drawing control and functions of drawing shapeless lines, straight lines and rectangles, adding characters, adjusting line colors and widths and the like. The user can draw a simple sketch.

2.5 making of professional drawings

And selecting the survey point, entering a survey point entity drawing interface, and capturing a map in a screen range through a screen capture, wherein the screen capture picture can be used as a plane map. The pictures are stored in a memory of the mobile terminal, a comprehensive survey map folder and a screenshot directory.

When drawing a terrain line, setting a transverse scale, a longitudinal scale, a standard paper size and a standard paper color by means of DEM elevation data, and generating a terrain line and a standard paper drawing by the mobile terminal;

and (3) introducing a terrain line and a rice paper by using third-party drawing software (wonderful crambers of flowers), adding information such as coordinate axes, lithology, birth states and legends, storing the content, and finishing the drawing of the profile map. And the pictures are stored in a third-party software directory.

2.6 introduction of professional drawings

The method comprises the steps of checking a point attribute interface, selecting a picture storage path through a 'import' function, selecting a picture, copying and storing the picture in a data packet, and associating the picture with a checking point.

2.7 solid delineation

And selecting the survey point, entering an entity drawing interface, drawing attached points, lines and surface graphs of the survey point and recording attributes. These graphics and properties are modified by and can be modified by the property tool, and the editing tool.

And (3) points are sketched, after a point map layer is selected, a general observation point can be sketched by using a drafting tool, after the graph is sketched, an observation point attribute table is opened, and the user fills in the observation point attribute. The multimedia icon can be used for entering a multimedia interface, shooting a picture, recording a video, recording an audio, drawing a sketch and deleting the multimedia icon.

Line drawing, selecting a line layer, using a 'drawing' tool to draw a linear graph, and opening a line attribute table after the graph is drawn.

Surface drawing, selecting a surface layer, using a drawing tool to draw a surface-shaped graph, and opening a surface attribute table after the graph is drawn.

The mobile terminal also provides a graphic editing tool, and the graphic editing tool mainly comprises the following tools:

③ deleting, namely selecting the graph, clicking (deleting) to delete the existing graph;

② moving points, selecting the graph, clicking the 'moving points', dragging any node of the graph, finishing the 'point' and finishing the graph editing;

③ adding points, selecting the graph, clicking the 'adding points', and adding a node on any edge of the graph by the mobile terminal;

④ deleting points, namely selecting a graph, clicking 'deleting points', clicking any node on the graph, and deleting the points by the mobile terminal;

⑤ trimming, namely selecting the graph, clicking 'trimming', drawing a trimming range on a screen in any drawing mode, clicking 'finishing', and finishing the modification of the graph by the mobile terminal;

⑥ line segmentation, selecting the graph, clicking the line segmentation, drawing two or more points passing through two sides of the graph on the screen, completing the point segmentation, and segmenting the graph by the mobile terminal;

⑦ line closing, selecting line pattern with at least 3 nodes not on the same line, clicking 'line closing', the line pattern connecting end to end, the line pattern will not change into plane pattern after closing.

⑧ merging, selecting two or more graphics, clicking 'merge', popping up the attribute selection prompt by the mobile terminal, determining the attribute selection point, and finishing the merging of the selected graphics by the mobile terminal;

⑨ common edge, selecting two or more graphics, point 'common edge', drawing graphics in the selected graphics in any mode, point 'finishing', the edge of the newly drawn graphics will be used as the common edge of the selected graphics;

⑩ surface division, selecting two or more graphics with overlapping parts, clicking 'surface division', selecting cutting graphics, determining points, selecting graphics to cut the remaining graphics and the overlapping parts;

scattering: selecting a graph synthesized by two or more graphs without overlapped parts, clicking to break up, and breaking up the graph into independent graphs by the mobile terminal;

revocation: clicking 'undo', undoing the previous operation, then clicking 'undo', and continuing the undoing operation;

and (3) recovering: clicking recovery to recover the cancelled operation, then clicking recovery to continue to recover the cancelled operation;

the mobile terminal also supports the modification of the attribute of the sketched graph, the graph is selected, the graph attribute table can be opened by using an attribute tool, and a user can edit the graph attribute.

3.1 outcome generation

The mobile terminal supports an online mode and an offline mode, and the result submission also has two modes:

① on-line mode, the investigation point can be directly updated to the national geological disaster investigation database through WIFI or 4G network by uploading through the main interface.

② single machine mode, the data package under the mobile terminal storage/comprehensive investigation/investigation data catalog is exported to the computer, and the recovered investigation data can be recorded into the national standard local database by using the 'data update' function of the PC terminal geological disaster investigation data recording mobile terminal.

Data results in two modes are submitted from field investigation data to a result database, any internal work processing is not needed, and the data results are all completed by a mobile terminal.

Example 1

The details of the survey of a river basin map in 2019 will be described as an example.

(1) Data collection

And collecting the image map, the geological map, the volatile partition map, the geotechnical map and the DEM elevation data in the investigation region.

(2) Data processing

The investigation uses the CGCS2000 geographic coordinate system uniformly, and images such as an image map, a geological map, a DEM and the like are converted into a CGCS2000 longitude and latitude coordinate system uniformly.

Wherein, the image format is self, tif does not need to be converted;

vector diagrams such as geological maps, volatile zone maps, geotechnical mass maps and the like are in a maptis format, and are uniformly converted into an arp format supported by arcgis;

the DEM elevation data is in an img format and is output in a tif format when the coordinate system is converted.

The processed base map data is copied to the mobile terminal for storage, and any directory can exist.

(3) Data packet and professional data preparation

The project is a national project, and the users are all national authorized users. Therefore, a survey data packet is created on the mobile terminal in an online manner (a user creates a survey project for a survey project, and creates a survey project according to a national standard survey point vector map layer template), and the following paths are created after the survey data packet is entered: layer management (mainly used for managing and setting the survey point layer and the base map layer) -survey point layer (survey point layer management and setting), then downloading historical survey point data in a survey area from a national geological disaster survey database, and adding the data into the corresponding survey point layer.

(4) Base map data addition

Under the management of a bottom image layer, calling a vector image in a mobile terminal storage from a vector image layer list (vector data display list), and displaying data of the vector image layer on a main interface;

calling out an image map stored in a mobile terminal from a raster image list (raster image data display management list), and displaying the image map on a map main interface;

and calling DEM elevation data stored in the mobile terminal in the elevation data module, and displaying the DEM elevation data on a map main interface.

(5) Picture layer arrangement

Because the added map layers are all in the default map language and cannot visually distinguish and distinguish the geographic elements, through the layer setting function, a user can set map symbols, map colors and map notes, the geographic elements can visually express and display, and the content required by the user can be displayed in a list form)

For example, the disaster susceptibility zoning map may be rendered using multiple values, color classification may be performed according to the susceptibility field, the random color assigned by the mobile terminal may be modified, the high susceptibility may be set to red, the medium susceptibility may be set to orange, the low susceptibility may be set to yellow, and the low susceptibility may be set to green.

And the rock-soil texture map is rendered without rendering, the color of the boundary is set to be blue, and the marking field is set to be the rock-soil type.

(6) Navigation

The navigation module is used for setting, clicking a map window to acquire a target point, displaying a connection line between the current position and the target point on a map interface, adding a plurality of target points, and selecting a certain target point in a navigation point list for preferential navigation;

or calling a third-party (hundredth or height) map for navigation, inputting the position coordinates of the target point into the height or hundredth map, planning a walking route by the height or hundredth map, and enabling the user to reach the destination according to the route.

The track module stores the user walking route record and provides a basis for investigating authenticity;

under the condition of GPS signals, the track module records the walking route of the investigator and displays the walking route on a map interface in real time.

(7) Classified adding survey points

After the destination is reached, the disaster point type is judged according to the field situation, the investigation point type is selected (for example, a popup window table corresponding to a landslide is selected when the landslide is selected), then the position information is obtained according to the GPS module, the position is used as the space position of the investigation point, the basic information of the investigation point is filled in the popup window table, and the investigation point is established.

Specifically, when a user arrives at a destination, judging the type of the geological disaster according to the field situation; creating a new task on an operation interface, selecting a disaster point type in an investigation point creating popup window, editing a corresponding disaster point layer by a mobile terminal, determining the coordinate position of a disaster point through functions of 'cross drawing points, GPS sampling points, coordinate drawing points' and the like, adding a point pattern in the corresponding type disaster point layer after determining the position, adding a record in a layer attribute table, generating a unique value for the record, filling disaster point basic information in a disaster point basic information frame, and storing the basic information in an attribute table in the disaster point layer.

(8) Survey point attribute information filling

And selecting the survey points created in the last step or the existing survey points, entering an attribute information filling interface, inputting survey point information according to a standardized form, and completing filling and storing.

Specifically, a disaster point is selected, an attribute interface (including a map sheet name, a map sheet number, a field number, a disaster name, a geographic position and the like) of the investigation point is entered, an attribute table is opened for editing, the attribute is filled and edited, the attribute is stored after the editing is finished, and the mobile terminal stores the content into the map layer attribute table.

(9) Multimedia information collection

After the attribute filling interface is filled in, a multimedia module is called, the mobile terminal camera is used for shooting, information editing is carried out on the shot content after the shooting is finished, for example, some multimedia shooting information (longitude and latitude of the current shooting position, mirror direction and multimedia character description) can be input, and a photo file is stored in a specified directory (for example, comprehensive investigation/survey data/project name/multimedia)

Specifically, a mobile end camera is called through a multimedia module to take a picture, the picture is taken, a picture file is stored in a directory of 'internal storage of a terminal/comprehensive investigation/investigation data/investigation project name/multimedia', meanwhile, the mobile terminal generates a record in an investigation project name/multimedia/medi.db/medi table and generates a unique value for the record, the unique value of a disaster point, a picture storage path and a picture name are simultaneously stored in the record, and the picture and the disaster point are associated in such a way; then popping up a multimedia information frame, allowing a user to input some multimedia shooting information (longitude and latitude of a current shooting position, a mirror direction and multimedia character description), and storing the multimedia shooting information in a corresponding record of a disaster point file record table by the mobile terminal;

video files are added to the survey points by recording videos; adding an audio file for the survey point by recording audio; and drawing a simple sketch for the survey point by drawing the sketch.

And the multimedia module also receives import, for example, a panoramic photo of a disaster point can be shot at high altitude by using an unmanned aerial vehicle, the unmanned aerial vehicle photo is stored in the sd card, the sd card is inserted into the mobile terminal, an import path is selected, the photo is selected, and multimedia information is input. The imported multimedia map is associated with a survey point.

(10) Making of professional drawings

Selecting survey points, passing through a drawing module, entering an entity sketching interface ① zooming in and out the map to a proper scale, keeping the survey points in the center of the screen, and intercepting the map within the screen range into a screenshot file, which can be used as a plan view.

② drawing a terrain line, clicking two (or more) points on the map, inputting a transverse scale and a longitudinal scale, generating a line section line by the mobile terminal according to DEM data, adding the generated section line and the Mie grid to the view, adding other geological information in the view, clicking and saving.

Specifically, part of investigators in the investigation select to use the mobile terminal function to generate a professional drawing, and part of the investigators select to use the investigation handbook to draw the professional drawing. The professional drawings drawn on the handbook can be used for generating pictures as electronic drawings by photographing.

(11) Professional drawing import

① selecting the storing path of the plan, selecting the picture, and importing the plan into the attribute interface.

Specifically, a path selection picture is selected, a picture file is copied to the directory of a terminal internal storage/comprehensive investigation/investigation data/investigation project name/disaster point file/raster picture, a record is generated in an 'investigation project name/map data/affliat.db/disaster point file record table', a unique value is generated for the record, the unique value of a disaster point, a picture storage path, a picture name and a type (a plane map) are simultaneously stored in the record, and the plane map and the disaster point are corresponding together in the way)

② and importing the cross-section, selecting a cross-section storage path, selecting a picture and importing the cross-section.

Specifically, a section storage path is selected, a picture file is copied to the internal storage of the terminal/comprehensive investigation/investigation data/investigation project name/disaster point file/raster map directory, a record is generated in an investigation project name/map data/affliation.db/disaster point file record table, a unique value is generated for the record, the unique value of a disaster point, the storage path of the picture, the name and the type of the picture (section) are stored in the record at the same time, and the section and the disaster point are corresponding together in the way)

③ and importing a sketch map, selecting a cross-section map storage path, selecting a picture and importing the sketch map.

Specifically, a picture file is copied to the internal storage/comprehensive investigation/investigation data/investigation project name/disaster point file/raster map directory of the terminal, a record is generated in the 'investigation project name/map data/affliart.db/disaster point file record table', a unique value is generated for the record, the unique value of a disaster point, a map storage path, a map name and a type (sketch) are stored in the record, and the sketch and the disaster point are corresponding together in the way)

(12) Solid sketching

Selecting survey points, entering an entity sketching interface, selecting a point layer, adding observation points for the survey points and adding observation point attribute information; selecting a line layer, and adding a boundary line for a disaster entity through a drawing module; and selecting a middle surface layer, and drawing a threat range and an influence range for the disaster body through a drawing module.

(13) Outcome generation

The survey adopts an online and offline mode to generate result data. After field investigation is finished every day, the network is connected, the investigation data packet needing to be uploaded is selected, and the investigation data is uploaded to the national geological disaster investigation database.

After the field investigation stage of the whole project is completed, the investigation data of the mobile terminals of all the groups are recovered to a computer, the geological disaster investigation data of the PC terminal is recorded into a local database of a newly-built investigation area of the mobile terminal, the recovered investigation data is directly updated to the local database by using data updating, and no data processing is needed in the middle.

The embodiments given above are preferable examples for implementing the present invention, and the present invention is not limited to the above-described embodiments. Any non-essential addition and replacement made by the technical characteristics of the technical scheme of the invention by a person skilled in the art belong to the protection scope of the invention.

Claims

1. A digitalized processing method for geological disaster field investigation is characterized in that operation in three stages of preparation before investigation, field investigation and result generation is carried out on the basis of a mobile terminal loaded with a plurality of functional modules;

the operation of the preparation stage before investigation comprises:

the operation of the field survey comprises the following steps:

2. The digitalized processing method facing geological disaster field investigation as claimed in claim 1, wherein the base map data includes remote sensing image data, geological vector data and DEM elevation data in the investigation region, information including lithology of investigation point position, disaster susceptibility, rock type, vegetation coverage, elevation and gradient can be obtained from the base map data, and basis is provided for geological disaster investigation;

3. The digitalized processing method for geological disaster field investigation as claimed in claim 1, wherein the current stage professional investigation data is the current stage geological disaster investigation data result, which is 5 universal check databases or 10 ten thousand geological disaster zoning databases; establishing a database of an administrative area where an investigation area is located through a geological disaster investigation data entry system, downloading and extracting professional investigation data, and making a field investigation data packet; and importing the field survey data into a fixed directory of the mobile terminal.

4. The method for digitized processing oriented to geological disaster field investigation as claimed in claim 1, wherein the adding of the base map data comprises: calling out a vector diagram in the base diagram data from the vector diagram layer list, adding the vector diagram to a map interface and displaying the vector diagram on a main interface; calling an image map in the base map data from the raster image list, adding the image map to a map interface and displaying the image map on a main interface; calling DEM elevation data in the base map data in an elevation data module, adding the DEM elevation data to a map interface and displaying the DEM elevation data on a main interface;

5. The method for digitized processing oriented to geological disaster field investigation as claimed in claim 1, characterized in that, the track record is sampled according to time interval or distance interval; and after finishing the track acquisition, connecting the sampling points into a line by the mobile terminal, and displaying the line on the main interface.

6. The digitalized treatment method facing geological disaster field investigation as claimed in claim 1, wherein different types of electronic forms and layer editions including landslide, collapse, debris flow, ground fissure, ground collapse, ground subsidence, unstable slope, engineering ground particles and geological environment particles are supported in the mobile terminal; the method comprises the following steps that (1) investigators judge disaster point types according to actual conditions on site and select new investigation point types;

7. The digitalized processing method oriented to geological disaster field investigation as claimed in claim 1, wherein when filling in basic information of investigation point, the mobile terminal assists in obtaining base map information by the following form:

⑤ slope measurement, measuring the slope between two points;

8. The digitalized treatment method facing geological disaster field investigation as claimed in claim 1, characterized in that, when drawing the plan view, the map within the screen can be intercepted, and the screenshot picture can be used as 'plan view';

9. The digitalized treatment method facing geological disaster field investigation as claimed in claim 1, characterized in that, in entity mapping, auxiliary points, lines, surface figures of investigation points can be sketched and attributes can be entered:

10. The method as claimed in claim 9, wherein the drawing tool comprises:

① deleting, selecting the graph, and deleting the existing graph;