CN114415116A - A coal mining monitoring method, device and computer equipment - Google Patents

Abstract

The application provides a coal mining monitoring method, a coal mining monitoring device and computer equipment. The method comprises the following steps: monitoring microseismic signals corresponding to a first monitoring area, wherein the microseismic signals comprise the origin time of each microseismic source in the first monitoring area, and the observed time and the calculated time of each microseismic wave corresponding to each microseismic source, which is transmitted to each sensor in the first monitoring area; determining the micro seismic source corresponding to the minimum time residual value as a target point based on the observed arrival time and the calculated arrival time of the micro seismic waves corresponding to the micro seismic sources and transmitted to each sensor in the first monitoring area; collecting microseismic frequency and position information of a target point; and if the microseismic frequency of the target point is greater than a preset threshold value, outputting first prompt information of the coal mining super-layer. The method and the device judge the microseismic frequency of the target point through the microseismic technology, if the microseismic frequency of the target point is larger than a preset threshold value, output the first prompt information of the coal mining super-layer, are not limited by the geological conditions of the coal bed, and can realize real-time accurate monitoring of coal mining.

Description

A coal mining monitoring method, device and computer equipment

technical field

The present application relates to the field of computer technology, and in particular, to a coal mining monitoring method, device and computer equipment.

Background technique

In coal mining, mining rules must be strictly followed, and the working face must be mined according to the plan. Exceeding the boundary or super-layer mining will not only bring about a lot of economic disputes, but also bring serious security risks. Therefore, the monitoring of coal mine out-of-bounds and super-layer mining behavior is crucial.

At present, the commonly used methods for monitoring out-of-bounds and super-layer mining include drilling method, hollow inclusion stress meter and other field measurement methods, as well as theoretical calculation and numerical simulation methods such as generalized back projection coefficient and limit equilibrium theory.

The field measurement method needs to compare the monitoring points before and after mining. Because the floor deformation has a certain lag relative to the advancement of the working face, it is difficult to obtain post-mining data, and it is difficult to realize real-time monitoring of floor deformation. Limited and other disadvantages. The numerical simulation method not only needs the field measured data as the basis, but also has strong subjective factors, and the calculation results have large errors.

Therefore, due to the weak geological conditions of the coal seam and the complex geological structure, it is difficult for the existing technology to be generally applicable to the monitoring of coal mining out-of-bounds or super-layers.

SUMMARY OF THE INVENTION

In order to solve the above-mentioned technical problems, the application provides a coal mining monitoring method, device and computer equipment, and the specific solutions are as follows:

In a first aspect, the embodiments of the present application provide a coal mining monitoring method, the coal mining monitoring method comprising:

Monitor the microseismic signal corresponding to the first monitoring area, wherein the microseismic signal includes the earthquake occurrence time of each microseismic source in the first monitoring area, and the microseismic wave corresponding to each microseismic source propagates to each of the first monitoring area. The observed time and the calculated time of the sensor;

Based on the observed time and the calculated time when the microseismic wave corresponding to each microseismic source propagates to each sensor in the first monitoring area, determining the microseismic source corresponding to the smallest time residual value as the target point;

collecting microseismic frequency and location information of the target point;

If the microseismic frequency of the target point is greater than a preset threshold, output first prompt information for mining superlayers in a coal mine, where the first prompt information includes the location information of the target point.

According to a specific embodiment disclosed in the present application, the step of determining the time of calculation includes:

Obtain the calculated travel time of the microseismic wave propagating from the microseismic source to each of the sensors;

The calculated time corresponding to each sensor is calculated by the formula t _ci =t ₀ +t _ti (T _i ,S), where t _ci is the calculated time corresponding to the ith sensor, i≥1, t ₀ is the seismic moment of the microseismic source, t _ti (T _i , S) is the calculated travel time corresponding to the ith described sensor, T _i is the sensor parameter of the ith described sensor, and S is the The source parameters of the source.

According to a specific embodiment disclosed in the present application, the step of determining the time residual value includes:

The observed time corresponding to each sensor is subtracted from the calculated time corresponding to each sensor to obtain a time residual value.

According to a specific embodiment disclosed in the present application, the coal mining monitoring method further includes:

Obtaining a cumulative deformation amount image corresponding to the second monitoring region by using the synthetic aperture radar image pair corresponding to the second monitoring region, wherein the cumulative deformation amount image includes a plurality of deformation regions;

superimposing and analyzing the mining right map corresponding to the second monitoring area and the cumulative deformation variable image, wherein the mining right map includes a plurality of authorized areas;

If any of the deformation areas is not completely within the authorized area, the corresponding deformation area is determined as the first target area, and the second prompt information of coal mining out of bounds is output, wherein the second prompt information Including location information of the first target area.

According to a specific embodiment disclosed in the present application, after the step of determining the corresponding deformation region as the first target region, the coal mining monitoring method further includes:

Determining each deformation area other than the first target area in the accumulated deformation amount image as a second target area;

superimposing and analyzing the mining face corresponding to the second monitoring area and all the second target areas;

If any of the second target areas is not completely within the mining working face, output the third prompt message that the coal mining is out of bounds.

In a second aspect, an embodiment of the present application provides a coal mining monitoring device, the coal mining monitoring device comprising:

A signal monitoring module for monitoring the microseismic signal corresponding to the first monitoring area, wherein the microseismic signal includes the seismic moment of each microseismic source in the first monitoring area, and the microseismic wave corresponding to each microseismic source propagates to the The observed time and calculated time of each sensor in the first monitoring area;

A time residual module, configured to determine the time corresponding to the smallest time residual value based on the observed time and the calculated time when the microseismic waves corresponding to each microseismic source propagate to each sensor in the first monitoring area The microseismic source is the target point;

a frequency acquisition module for acquiring the microseismic frequency and location information of the target point;

The first output module is used for outputting first prompt information of coal mining superlayer if the microseismic frequency of the target point is greater than a preset threshold, wherein the first prompt information includes the position information of the target point.

According to a specific embodiment disclosed in this application, the time residual module is specifically applied to:

Obtain the calculated travel time of the microseismic wave propagating from the microseismic source to each of the sensors;

The calculated time corresponding to each sensor is calculated by the formula t _ci =t ₀ +t _ti (T _i ,S), where t _ci is the calculated time corresponding to the ith sensor, i≥1, t ₀ is the seismic moment of the microseismic source, t _ti (T _i , S) is the calculated travel time corresponding to the ith described sensor, T _i is the sensor parameter of the ith described sensor, and S is the The source parameters of the source.

According to a specific embodiment disclosed in the present application, the coal mining monitoring device further includes:

a deformation accumulation module, configured to obtain an accumulated deformation quantity image corresponding to the second monitoring area through the synthetic aperture radar image pair corresponding to the second monitoring area, wherein the accumulated deformation quantity image includes a plurality of deformation areas;

an overlay analysis module, configured to perform overlay analysis on the mining right map corresponding to the second monitoring area and the cumulative deformation variable image, wherein the mining right map includes a plurality of authorized areas;

The second output module is configured to determine the corresponding deformation area as the first target area if any of the deformation areas is not completely within the authorized area, and output the second prompt information that the coal mining is out of bounds, wherein , the second prompt information includes location information of the first target area.

Compared with the prior art, the present application has the following beneficial effects:

The present application provides a coal mining monitoring method, device and computer equipment. The method includes: monitoring a microseismic signal corresponding to a first monitoring area, wherein the microseismic signal includes the seismic moment of each microseismic source in the first monitoring area, and the microseismic wave corresponding to each microseismic source propagated to each sensor in the first monitoring area. The observed time and the calculated time; based on the observed time and calculated time of the microseismic waves corresponding to each microseismic source propagating to each sensor in the first monitoring area, determine the microseismic source corresponding to the smallest time residual value as the target point; The microseismic frequency and position information of the target point; if the microseismic frequency of the target point is greater than the preset threshold, output the first prompt information of the coal mining superlayer. The target point refers to a point with a high vibration frequency in the first monitoring area, indicating that the current coal mining work may exceed the original coal seam and affect the coal seam corresponding to the first monitoring area. In the present application, the microseismic frequency of the target point is judged by the microseismic technology. If the microseismic frequency of the target point is greater than the preset threshold, the first prompt information of the coal mining superlayer is output. It avoids coal mining being limited by coal seam address conditions, and can achieve the effect of real-time and accurate monitoring of coal mining.

Description of drawings

In order to illustrate the technical solutions of the present invention more clearly, the accompanying drawings required in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be It is regarded as the limitation of the protection scope of the present invention. In the various figures, similar components are numbered similarly.

Fig. 1 is the schematic flow chart of a kind of coal mine mining monitoring method provided by the embodiment of the application;

2 is a schematic diagram of the arrangement of sensors involved in a method for monitoring coal mining provided by an embodiment of the present application;

3 is a schematic diagram of calculating the propagation velocity of microseismic waves involved in a coal mining monitoring method provided by an embodiment of the present application;

FIG. 4 is a schematic diagram of superimposing and analyzing the mining rights map and the cumulative deformation variable image involved in a coal mine mining monitoring method provided by an embodiment of the present application;

FIG. 5 is one of the block diagrams of a coal mine mining monitoring method and apparatus provided by an embodiment of the present application;

FIG. 6 is the second block diagram of a module of a coal mine mining monitoring method and apparatus provided by an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments.

The components of the embodiments of the invention generally described and illustrated in the drawings herein may be arranged and designed in a variety of different configurations. Thus, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present invention.

Hereinafter, the terms "comprising", "having" and their cognates, which may be used in various embodiments of the present invention, are only intended to denote particular features, numbers, steps, operations, elements, components, or combinations of the foregoing, and should not be construed as first excluding the presence of or adding one or more other features, numbers, steps, operations, elements, components or combinations of the foregoing or the possibility of a combination of the foregoing.

Furthermore, the terms "first", "second", "third", etc. are only used to differentiate the description and should not be construed as indicating or implying relative importance.

Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which various embodiments of this invention belong. The terms (such as those defined in commonly used dictionaries) will be interpreted as having the same meaning as the contextual meaning in the relevant technical field and will not be interpreted as having an idealized or overly formal meaning, unless explicitly defined in the various embodiments of the present invention.

Some embodiments of the present application will be described in detail below with reference to the accompanying drawings. The following embodiments and features of the embodiments may be combined with each other without conflict.

Referring to FIG. 1 , FIG. 1 is a schematic flowchart of a coal mine mining monitoring method provided by an embodiment of the present application. As shown in Figure 1, the coal mining monitoring method mainly includes:

Step S101, monitor the microseismic signal corresponding to the first monitoring area, wherein the microseismic signal includes the seismic moment of each microseismic source in the first monitoring area, and the microseismic wave corresponding to each microseismic source propagates to the first monitoring area. Observed and calculated times for each sensor in the area.

The first monitoring area may be any area that needs to be monitored in the process of coal mining, for example, in the process of coal mining, the mining face will cover different coal seams. If a mining face covers three coal seams, namely No. 4 coal seam, No. 5 coal seam and No. 6 coal seam. Among them, the distance between the No. 4 coal seam and the No. 5 coal seam is 18m, and the distance between the No. 5 coal seam and the No. 6 coal seam is 8m. The coal seam currently planned to be mined is the No. 6 coal seam. At this time, other areas other than the No. 6 coal seam can be set as the first monitoring area, such as the No. 5 coal seam. By installing sensors, such as microseismographs, on the No. 5 coal seam, real-time monitoring of coal mining work can be carried out.

Referring to FIG. 2 , FIG. 2 is a schematic diagram of the arrangement of sensors involved in a method for monitoring coal mine mining provided by an embodiment of the present application. Corresponding to the above example, the microseismometer can be arranged in the planned mining face of the No. 5 coal seam, and a sensor can be installed at preset distances from one end along the two long sides of the mining face, and the coal seam can be monitored through data transmission equipment. The received microseismic signal is transmitted back to the ground monitoring equipment. In specific implementation, the preset distance may be 100 meters. Generally, at least four microseismometers are needed to calculate the location of a hypocenter. In order to have redundant observations, that is, observation margins, for the purpose of inspection, at least five microseismometers can be arranged.

The time of observation refers to the time when the microseismic wave recorded by a certain sensor reaches the sensor. The calculation time refers to the time of the microseismic source and the time when the microseismic wave propagates from the microseismic source to the sensor. The calculated travel time refers to the time that the microseismic wave travels from the microseismic source to the sensor.

The step of determining when the time is calculated includes:

Obtain the calculated travel time of the microseismic wave propagating from the microseismic source to each of the sensors;

The calculated time corresponding to each sensor is calculated by the formula t _ci =t ₀ +t _ti (T _i ,S), where t _ci is the calculated time corresponding to the ith sensor, i≥1, t ₀ is the seismic moment of the microseismic source, t _ti (T _i , S) is the calculated travel time corresponding to the ith described sensor, T _i is the sensor parameter of the ith described sensor, and S is the The source parameters of the source.

In order to subsequently calculate the position of the microseismic source, the propagation velocity of the microseismic wave in the coal seam can be obtained first. Referring to FIG. 3 , FIG. 3 is a schematic diagram of calculating the propagation velocity of microseismic waves involved in a coal mine mining monitoring method provided by an embodiment of the present application. S(x ₀ , y ₀ , z ₀ , t ₀ ) and T _i (x _i , y _i , z _i , t _i ) represent the microseismic source and the ith sensor, respectively, where x ₀ , y ₀ , z ₀ and x _i , y _i , and _zi represent the spatial coordinates of the microseismic source and sensor, respectively, and t ₀ and t _i represent the moment of the microseismic source and the time when the waveform of the ith sensor is first observed. S(x ₀ , y ₀ , z ₀ , t ₀ ) is a microseismic source manufactured in advance, and i sensors are arranged around the microseismic source. Therefore, the spatial position of the artificially manufactured microseismic source and the spatial position of the surrounding sensors are known. By recording the seismic moment of the manufactured microseismic source and the observed time of reaching each sensor, the microseismic wave in the coal seam can be solved. The propagation velocity is used to determine the spatial location of the microseismic source of the subsequent coal seam caused by coal mining.

Assuming that the calculation time of the i-th sensor is t _ci , then t _ci can be described by the following formula: t _ci =t ₀ +t _ti (T _i , S) In this formula, S is the source parameter, denoted S = (x ₀ , y ₀ , z ₀ , t ₀ )T; T _i is the ith sensor parameter, denoted as T _i =(x _i , y _i , z _i , t _i )T, i=1, 2,...n; t _ti (T _i , S) is the calculated travel time of the ith sensor.

Step S102, determining the microseismic source corresponding to the smallest time residual value as the target based on the observed time and the calculated time when the microseismic wave corresponding to each microseismic source propagates to each sensor in the first monitoring area point.

The steps of determining the time residual value include:

The observed time corresponding to each sensor is subtracted from the calculated time corresponding to each sensor to obtain a time residual value.

During the specific implementation, the difference between the observed time recorded by the sensor and the calculated time can be recorded as the station residual or time residual γ _i , which of course can also be called the station residual γ _i , which can be calculated by the following formula Express: γ _i =t _i -t _ci =t _i -(t ₀ +t _ti (T _i ,S)). The degree of inconsistency between the observed time and the calculated time of the sensors involved in the localization can be expressed by the time residual. The essence of microseismic location is to take the microseismic source corresponding to the smallest time residual value in the first monitoring area as the target point. . The time residual value corresponding to each sensor may be calculated first, and then a minimum value is selected as the minimum time residual value from all the time residual values corresponding to all sensors in the first monitoring area. The smaller the time residual value is, the higher the degree of agreement between the observed time and the calculated time is. The microseismic point corresponding to the smallest time residual value can be determined as the first monitoring area that is greatly affected by vibration or has a representative a point of sex.

Step S103, collecting the microseismic frequency and position information of the target point.

Corresponding to the example in step S101, the target point refers to a qualified microseismic source that appears within the range of the No. 5 coal seam when the No. 6 coal seam is mined. At this time, the target point can only indicate that the coal mining work at this time has an impact on other coal seams. However, in the specific implementation, if the vibration frequency of the target point is relatively small, the influence of the target point on the No. 5 coal seam can be ignored. Therefore, at this time, the microseismic frequency and position information of the target point can be collected, and further judgment can be made based on the microseismic frequency of the target point.

Step S104, if the microseismic frequency of the target point is greater than a preset threshold, output first prompt information for mining superlayers in a coal mine, where the first prompt information includes the location information of the target point.

In specific implementation, the microseismic frequency of the No. 5 coal seam can be recorded before the coal mine is mined. After the No. 6 coal seam is mined, continue to record the microseismic frequency of the No. 5 coal seam. If the monitored microseismic frequency of the No. 5 coal seam exceeds the preset threshold after the No. 6 coal seam is mined, it is considered that super seam mining occurred during the mining of the No. 6 coal seam. The behavior caused frequent occurrence of microseismic events in the No. 5 coal seam, and the coal seam fractured. In specific implementation, the preset threshold may be 130% of the microseismic frequency corresponding to the No. 5 coal seam when the No. 6 coal seam is not mined.

If the microseismic frequency of the target point is greater than the preset threshold, output the first prompt information of the coal mining superlayer. The first prompt information may be sent to the host computer or the terminal device to which the user belongs in the form of a short message, broadcast, or a combination of various data, for prompting the current coal mining work to have super-layer violations. The first prompt information includes location information of the target point. In specific implementation, the location information can be collected before coal mining, after the target point is determined, or after the judgment step of "the microseismic frequency of the target point is greater than the preset threshold", which is not further limited here.

On the basis of the above-mentioned embodiment, according to a specific implementation manner of the present application, an improved solution is also provided, in which, compared with the above-mentioned implementation manner, monitoring for the cross-border situation in the process of coal mining is added. Specifically, the coal mining monitoring method may further include:

Obtaining a cumulative deformation amount image corresponding to the second monitoring region by using the synthetic aperture radar image pair corresponding to the second monitoring region, wherein the cumulative deformation amount image includes a plurality of deformation regions;

superimposing and analyzing the mining right map corresponding to the second monitoring area and the cumulative deformation variable image, wherein the mining right map includes a plurality of authorized areas;

If any of the deformation areas is not completely within the authorized area, the corresponding deformation area is determined as the first target area, and the second prompt message that the coal mining is out of bounds is output.

During the specific implementation, in the process of coal mining, in addition to the possibility of super-layer mining, the situation of super-boundary mining may also occur. The coal seam stratum disturbance caused by over-boundary mining will destroy the original stable stress structure and cause the stratum to bend and subside. The cumulative deformation of each second monitoring area may be acquired by using the Interferometric Aperture Radar (Interferometri c synthet ic aperture radar, InSAR for short) technology. By accumulating the deformation variables to fit the coal mining face corresponding to the second monitoring area, it is analyzed whether out-of-bounds mining behavior occurs. InSAR technology has the advantages of all-weather, high resolution, high precision, low cost and moderate data interval.

Preferably, since most of the coal mines are located in the field and there are not a large number of uniformly distributed high coherence points, the SBAS-I nSAR technology that is more suitable for the field with less distribution of high coherence points can be adopted. During specific implementation, the free Sentine 1 data and the required external DEM 30-meter resolution data can be downloaded, and the cumulative deformation of the second monitoring area can be obtained through the SBAS-I nSAR technology.

Referring to FIG. 4 , FIG. 4 is a schematic diagram of superimposing and analyzing a mining right map and an accumulated deformation variable image involved in a coal mine mining monitoring method provided by an embodiment of the present application. After the accumulated deformation amount of the second monitoring area is determined, the mining right map corresponding to the second monitoring area and the accumulated deformation amount image can be superimposed and analyzed. In Fig. 4, the area corresponding to the thick black line is the authorized area in the mineral rights map corresponding to the second monitoring area, as shown in A1 in Fig. 4; the shaded area is the deformation in the accumulated deformation image corresponding to the second monitoring area area, as shown in B1 in Figure 4. If the cumulative deformation image corresponding to the second monitoring area is completely located in the mining rights map, it is determined that there is no illegal behavior of out-of-bounds mining in the coal mining work; if any deformation area is not completely within the corresponding authorized area, the corresponding deformation The area is determined as the first target area, and the second prompt information of coal mining out of bounds is output.

The above-mentioned method of superimposing and analyzing the mining right map corresponding to the second monitoring area and the cumulative deformation variable image determines whether there is a large-scale out-of-bounds situation in coal mining. Out-of-bounds conditions in a small range may not be displayed accurately. Therefore, after the step of determining the corresponding deformation area as the first target area, the coal mining monitoring method further includes:

Determining each deformation area other than the first target area in the accumulated deformation amount image as a second target area;

superimposing and analyzing the mining face corresponding to the second monitoring area and all the second target areas;

If any of the second target areas is not completely within the mining working face, output the third prompt message that the coal mining is out of bounds.

During the specific implementation, if the coal mining subsidence areas caused by coal mining are basically within the scope of the mining rights, there is no situation where the subsidence areas appear outside the scope of the mining rights. In order to determine the mining face and coal mining subsidence, it is possible to further analyze whether coal mining beyond the mining face occurs in each implementation stage. Determining each deformation area except the first target area in the cumulative deformation amount image as the second target area, if any second target area is not completely within the mining face, output the third prompt message that the coal mining is out of bounds.

The coal mining monitoring method provided by the present application can monitor the frequency of events such as tiny cracks and fractures in the stratum and the location of the microseismic source. Compared with the microseismic frequency of the coal seam that is not in the mining plan when it is not mined, if the microseismic frequency after mining is greater than the preset threshold, it can be determined that the current coal seam has super-bed mining behavior and its epicenter position can be located. Through the I nSAR time series observation method, the surface subsidence of the area to be monitored can be observed in a large range for a long time, and the surface deformation rate and cumulative deformation amount of the area can be obtained. Combined with the corresponding coal mine tenure map and mining face, it can be identified from a large scale to a fine-grained whether the surface subsidence caused by coal mining conforms to the planned mining process and scope. The application is not limited by the geological conditions of coal seams, and can realize real-time and accurate monitoring of coal mining.

Corresponding to the above method embodiment, referring to FIG. 5 , the present invention further provides a coal mining monitoring device 500 , the coal mining monitoring device 500 includes:

The signal monitoring module 501 is used to monitor the microseismic signal corresponding to the first monitoring area, wherein the microseismic signal includes the earthquake occurrence time of each microseismic source in the monitoring area, and the microseismic wave corresponding to each microseismic source propagates to the monitoring area. The observed time and calculated time of each sensor in the area;

The time residual module 502 is configured to determine the microseismic wave corresponding to the smallest time residual value based on the observed time and the calculated time when the microseismic wave corresponding to each microseismic source propagates to each sensor in the monitoring area. The source is the target point;

A frequency acquisition module 503, configured to acquire the microseismic frequency and location information of the target point;

The first output module 504 is configured to output the first prompt information of coal mining superlayer if the microseismic frequency of the target point is greater than a preset threshold, wherein the first prompt information includes the position information of the target point .

During specific implementation, the time residual module is specifically applied to:

Obtain the calculated travel time of the microseismic wave propagating from the microseismic source to each of the sensors;

The calculated time corresponding to each sensor is calculated by the formula t _ci =t ₀ +t _ti (T _i ,S), where t _ci is the calculated time corresponding to the ith sensor, i≥1, t ₀ is the seismic moment of the microseismic source, t _ti (T _i , S) is the calculated travel time corresponding to the ith described sensor, T _i is the sensor parameter of the ith described sensor, and S is the The source parameters of the source.

Referring to FIG. 6 , FIG. 6 is the second block diagram of a coal mine mining monitoring method and apparatus provided by an embodiment of the present application. When specifically implemented, the coal mining monitoring device 500 further includes:

A deformation accumulation module 505, configured to obtain an accumulated deformation quantity image corresponding to the second monitoring area through the synthetic aperture radar image pair corresponding to the second monitoring area, wherein the accumulated deformation quantity image includes a plurality of deformation areas;

an overlay analysis module 506, configured to perform overlay analysis on the mining right map corresponding to the second monitoring area and the accumulated deformation variable image, wherein the mining right map includes a plurality of authorized areas;

The second output module 507 is configured to determine the corresponding deformation area as the first target area if any of the deformation areas is not completely within the authorized area, and output the second prompt information that the coal mining is out of bounds.

The coal mining monitoring device, computer equipment and computer-readable storage medium provided by the present application can monitor the frequency of events such as tiny cracks and fractures in the formation and the location of the microseismic source. Compared with the microseismic frequency of the coal seam that is not in the mining plan when it is not mined, if the microseismic frequency after mining is greater than the preset threshold, it can be determined that the current coal seam has super-bed mining behavior and its epicenter position can be located. Through the InSAR technology, the surface subsidence of the area to be monitored can be observed in a large range for a long time, and the surface deformation rate and cumulative deformation amount of the area can be obtained. Combined with the corresponding coal mine tenure map and mining face, it can be identified from a large scale to a fine-grained whether the surface subsidence caused by coal mining conforms to the planned mining process and scope. The application is not limited by the geological conditions of coal seams, and can realize real-time and accurate monitoring of coal mining.

For the specific implementation process of the coal mining monitoring device, computer equipment, and computer-readable storage medium provided by the present application, reference may be made to the specific implementation process of the coal mining monitoring method provided by the foregoing embodiments, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed apparatus and method may also be implemented in other manners. The apparatus embodiments described above are only schematic, for example, the flowcharts and structural diagrams in the accompanying drawings show the possible implementation architectures and functions of the apparatuses, methods and computer program products according to various embodiments of the present invention and operation. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code that contains one or more functions for implementing the specified logical function(s) executable instructions. It should also be noted that, in alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It is also noted that each block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart diagrams, can be implemented using dedicated hardware-based systems that perform the specified functions or actions. be implemented, or may be implemented in a combination of special purpose hardware and computer instructions.

In addition, each functional module or unit in each embodiment of the present invention may be integrated to form an independent part, or each module may exist alone, or two or more modules may be integrated to form an independent part.

If the functions are implemented in the form of software function modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on such understanding, the technical solution of the present invention can be embodied in the form of a software product in essence, or the part that contributes to the prior art or the part of the technical solution. The computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a smart phone, a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes: U disk, removable hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disk and other various storage media that can store program codes. medium.

The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention. should be included within the protection scope of the present invention.

Claims (10)

1. a coal mining monitoring method, is characterized in that, described coal mining monitoring method comprises: Monitor the microseismic signal corresponding to the first monitoring area, wherein the microseismic signal includes the earthquake occurrence time of each microseismic source in the first monitoring area, and the microseismic wave corresponding to each microseismic source propagates to each of the first monitoring area. The observed time and the calculated time of the sensor; Based on the observed time and the calculated time when the microseismic wave corresponding to each microseismic source propagates to each sensor in the first monitoring area, determining the microseismic source corresponding to the smallest time residual value as the target point; collecting microseismic frequency and location information of the target point; If the microseismic frequency of the target point is greater than a preset threshold, output first prompt information for mining superlayers in a coal mine, where the first prompt information includes the location information of the target point. 2. The coal mine mining monitoring method according to claim 1, wherein the step of determining when the calculation expires comprises: Obtain the calculated travel time of the microseismic wave propagating from the microseismic source to each of the sensors; The calculated time corresponding to each sensor is calculated by the formula t _ci =t ₀ +t _ti (T _i ,S), where t _ci is the calculated time corresponding to the ith sensor, i≥1, t ₀ is the seismic moment of the microseismic source, t _ti (T _i , S) is the calculated travel time corresponding to the ith described sensor, T _i is the sensor parameter of the ith described sensor, and S is the The source parameters of the source. 3. The coal mine mining monitoring method according to claim 2, wherein the step of determining the time residual value comprises: The observed time corresponding to each sensor is subtracted from the calculated time corresponding to each sensor to obtain a time residual value. 4. The coal mining monitoring method according to claim 1, wherein the coal mining monitoring method further comprises: Obtaining a cumulative deformation amount image corresponding to the second monitoring region by using the synthetic aperture radar image pair corresponding to the second monitoring region, wherein the cumulative deformation amount image includes a plurality of deformation regions; superimposing and analyzing the mining right map corresponding to the second monitoring area and the cumulative deformation variable image, wherein the mining right map includes a plurality of authorized areas; If any of the deformation areas is not completely within the authorized area, the corresponding deformation area is determined as the first target area, and the second prompt information of coal mining out of bounds is output, wherein the second prompt information Including location information of the first target area. 5. The coal mining monitoring method according to claim 4, wherein after the step of determining the corresponding deformation area as the first target area, the coal mining monitoring method further comprises: Determining each deformation area other than the first target area in the accumulated deformation amount image as a second target area; superimposing and analyzing the mining face corresponding to the second monitoring area and all the second target areas; If any of the second target areas is not completely within the mining working face, output the third prompt message that the coal mining is out of bounds. 6. A coal mining monitoring device, characterized in that the coal mining monitoring device comprises: A signal monitoring module for monitoring the microseismic signal corresponding to the first monitoring area, wherein the microseismic signal includes the seismic moment of each microseismic source in the first monitoring area, and the microseismic wave corresponding to each microseismic source propagates to the The observed time and calculated time of each sensor in the first monitoring area; A time residual module, configured to determine the time corresponding to the smallest time residual value based on the observed time and the calculated time when the microseismic waves corresponding to each microseismic source propagate to each sensor in the first monitoring area The microseismic source is the target point; a frequency acquisition module for acquiring the microseismic frequency and location information of the target point; The first output module is used for outputting first prompt information of coal mining superlayer if the microseismic frequency of the target point is greater than a preset threshold, wherein the first prompt information includes the position information of the target point. 7. The coal mine mining monitoring device according to claim 6, wherein the time residual module is specifically applied to: Obtain the calculated travel time of the microseismic wave propagating from the microseismic source to each of the sensors; The calculated time corresponding to each sensor is calculated by the formula t _ci =t ₀ +t _ti (T _i ,S), where t _ci is the calculated time corresponding to the ith sensor, i≥1, t ₀ is the seismic moment of the microseismic source, t _ti (T _i , S) is the calculated travel time corresponding to the ith described sensor, T _i is the sensor parameter of the ith described sensor, and S is the The source parameters of the source. 8. The coal mining monitoring device according to claim 6, wherein the coal mining monitoring device further comprises: a deformation accumulation module, configured to obtain an accumulated deformation quantity image corresponding to the second monitoring area through the synthetic aperture radar image pair corresponding to the second monitoring area, wherein the accumulated deformation quantity image includes a plurality of deformation areas; an overlay analysis module, configured to perform overlay analysis on the mining right map corresponding to the second monitoring area and the cumulative deformation variable image, wherein the mining right map includes a plurality of authorized areas; The second output module is configured to determine the corresponding deformation area as the first target area if any of the deformation areas is not completely within the authorized area, and output the second prompt information that the coal mining is out of bounds, wherein , the second prompt information includes location information of the first target area. 9. A computer device, characterized in that the computer device comprises a processor and a memory, the memory stores a computer program, and the computer program implements any one of claims 1 to 5 when executed on the processor The coal mining monitoring method described in item. 10. A computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program, and when the computer program is executed on a processor, the coal mine according to any one of claims 1 to 5 is implemented Mining monitoring methods.

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