CN112504336A - Landslide area pipeline deformation monitoring system - Google Patents
Landslide area pipeline deformation monitoring system Download PDFInfo
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- CN112504336A CN112504336A CN202011355420.3A CN202011355420A CN112504336A CN 112504336 A CN112504336 A CN 112504336A CN 202011355420 A CN202011355420 A CN 202011355420A CN 112504336 A CN112504336 A CN 112504336A
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- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
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Abstract
本发明提供一种滑坡区管道变形监测系统，包括滑坡稳定性监测模块、滑坡支护体监测模块、环境参量监测模块、管道应变监测模块和光纤光栅解调仪；滑坡稳定性监测模块、滑坡支护体监测模块、环境参量监测模块和管道应变监测模块使用若干个光纤光栅传感器监测管道变形及管道所处滑坡区的滑坡灾害情况；滑坡稳定性监测模块、滑坡支护体监测模块、环境参量监测模块和管道应变监测模块通过传输光纤与光纤光栅解调仪连接。本发明可远程实时监测管道设置的滑坡区岩土体变形的核心参量，具有引线少、抗干扰、耐腐蚀、测量操作方便、易于管理的优点。
The invention provides a pipeline deformation monitoring system in a landslide area, comprising a landslide stability monitoring module, a landslide support body monitoring module, an environmental parameter monitoring module, a pipeline strain monitoring module and a fiber grating demodulator; The protection body monitoring module, the environmental parameter monitoring module and the pipeline strain monitoring module use several fiber grating sensors to monitor the pipeline deformation and the landslide disaster in the landslide area where the pipeline is located; the landslide stability monitoring module, the landslide support monitoring module, the environmental parameter monitoring module The module and the pipeline strain monitoring module are connected with the fiber grating demodulator through the transmission fiber. The invention can remotely monitor the core parameters of the rock and soil mass deformation in the landslide area set by the pipeline in real time, and has the advantages of less lead wires, anti-interference, corrosion resistance, convenient measurement operation and easy management.
Description
Technical Field
The invention belongs to the technical field of pipeline monitoring, and particularly relates to a landslide area pipeline deformation monitoring system.
Background
The safe transportation of petroleum and natural gas is the life line of national economic development and people's material life, and the pipeline is especially important as the main mode of oil gas transportation and the safety problem of the pipeline is very important. In recent years, because of unbalanced distribution of oil and gas resource areas in China, a large number of long-distance oil pipelines are established, and a large number of pipelines pass through mountainous areas. The pipelines passing through the mountainous area are threatened by geological disasters such as landslides, so that the monitoring information of the geological disasters of the pipelines and the geological disasters along the pipelines are acquired timely, accurately and efficiently, and higher requirements are provided for the technical means of safety monitoring of oil and gas pipelines and monitoring of the impending geologic bodies along the pipelines.
Aiming at the safety monitoring of pipelines, the currently adopted monitoring method mainly is an in-pipeline detection technology, which is to complete the detection of the defects of the pipelines by using intelligent detection equipment under the condition of not influencing the transportation of oil and gas pipelines and evaluate the applicability of the discovered defects so as to carry out scientific and reasonable maintenance. Currently, intelligent detectors applied at home and abroad are mainly represented by a magnetic flux leakage detection technology (MFL) and an ultrasonic detection technology (UT), and are widely applied in the industry after more than 40 years of development. However, these technologies usually cannot achieve long-term real-time long-distance detection, lack of pre-warning function, and are interfered by electromagnetic field, and their measurement accuracy and adaptability are also greatly affected.
Aiming at monitoring the surface deformation of the landslide, the most common methods are an infrared distance meter, a theodolite, a level, a total station, a GPS and the like, the most mature and wide method is the GPS monitoring at present, in a faithful and strong gas transmission pipeline of the West-Qidong gas transmission project, Chenzhen and the like use a HD8200G single-frequency GPS receiver to monitor the landslide, the GPS horizontal positioning precision of high-performance configuration can reach millimeter level, and the method can be used for monitoring the displacement of collapse and landslide. However, the method is restricted by conditions such as a field and the like, has poor real-time performance, and cannot meet the requirement of long-term monitoring. In the landslide, the traditional method mainly adopts a mode of implanting a resistance type strain gauge, a vibrating wire type strain gauge and the like in a side slope support body, but the sensors have the problems of corrosion resistance, electromagnetic interference susceptibility and the like.
Therefore, a landslide area pipeline deformation monitoring system with real-time, long-distance and stable monitoring capability is urgently needed.
Disclosure of Invention
In order to solve the technical problems, the invention provides a landslide area pipeline deformation monitoring system which can remotely monitor core parameters of landslide area rock and soil body deformation set by a pipeline in real time and has the advantages of few leads, interference resistance, corrosion resistance, convenience in measurement operation and easiness in management.
The invention provides the following technical scheme:
a landslide area pipeline deformation monitoring system comprises a landslide stability monitoring module, a landslide support body monitoring module, an environment parameter monitoring module, a pipeline strain monitoring module and a fiber bragg grating demodulator; the landslide stability monitoring module, the landslide support monitoring module, the environmental parameter monitoring module and the pipeline strain monitoring module monitor and monitor pipeline deformation and landslide disaster conditions of a landslide area where the pipeline is located by using a plurality of fiber bragg grating sensors; the landslide stability monitoring module, the landslide support monitoring module, the environmental parameter monitoring module and the pipeline strain monitoring module are connected with the fiber bragg grating demodulator through transmission optical fibers; the landslide stability monitoring module is used for monitoring soil layer deformation and displacement at different depths in a landslide area; the landslide support monitoring module is used for monitoring deformation and strain of the pipeline and the support facility in the landslide area; the environment parameter monitoring module is used for monitoring soil layer temperatures at different depths of the landslide area, pore water pressure of a water-bearing layer and water level of water around the landslide area; the pipeline strain monitoring module is used for monitoring the axial strain force and strain value of the pipeline; and the fiber grating demodulator receives and resolves signals transmitted by the landslide stability monitoring module, the landslide support monitoring module, the environmental parameter monitoring module and the pipeline strain monitoring module.
Preferably, the landslide stability monitoring module comprises a fiber grating displacement meter, a fiber grating inclinometer tube and a fiber grating fixed-point optical cable; the fiber bragg grating displacement meters are arranged in soil layers at different depths in the landslide area, and the fiber bragg grating displacement meters are connected in series through optical cables to detect the deformation of the soil layers in the landslide area; the fiber bragg grating inclinometer is arranged below a bed rock surface of the landslide area and used for monitoring horizontal displacement of a deep soil body of the landslide area; the fiber bragg grating fixed-point optical cable is fixed between two slope surface fixtures on the surface of the landslide area along the main landslide direction of the landslide area and is used for monitoring the deformation of the landslide area along the slope surface direction.
Preferably, the landslide support body monitoring module comprises a fiber grating soil pressure box, a fiber grating reinforcing steel bar stress meter, a fiber grating anchor cable dynamometer and a fiber grating embedded strain gauge, wherein the fiber grating soil pressure box is arranged on two sides of the pipeline and used for monitoring the pressure of the soil body on the wall of the pipeline; the landslide supporting facility comprises a pile body; the pile body comprises a steel bar, and the steel bar comprises an anchor rod and a steel bar cage; the fiber grating steel bar stress meter is welded on the steel bar cage and the anchor rod and is used for measuring the strain force of the steel bar; the fiber bragg grating anchor cable dynamometer is used for measuring the strain force of the anchor head of the anchor rod; the fiber grating embedded strain gauge is bound on the reinforcement cage and used for measuring the deformation and the strain force in the pile body.
Preferably, the environmental parameter monitoring module comprises a fiber grating osmometer, a fiber grating liquid level meter and a fiber grating thermometer, wherein the fiber grating osmometer, the fiber grating liquid level meter and the fiber grating thermometer are arranged in soil layers with different depths and are respectively used for monitoring the temperature, the water level and the pore water pressure of a water-bearing layer in different depth soil layers of the landslide area.
Preferably, the pipeline strain monitoring module comprises a fiber grating string, and the fiber grating string is axially arranged along the surface of the pipeline and used for monitoring the axial strain force and the strain value of the pipeline.
Preferably, the monitoring system further comprises a monitoring host, and the monitoring host receives data transmitted by the fiber grating demodulator through a wireless remote transmission network and performs data processing.
Preferably, one end of each fiber grating sensor is connected with a welding lead in series, and the other end of each fiber grating sensor is connected with a fiber grating demodulator through a welding jumper.
Preferably, the wireless remote transmission network is a 3G or 4G mobile communication network.
Preferably, the fiber grating demodulator comprises a temperature control system, and the temperature control system comprises a temperature control circuit, a temperature sensor and a temperature adjusting device.
Preferably, the temperature sensor is coupled with the temperature control circuit, the temperature adjusting device is coupled with the temperature control circuit, the temperature sensor includes a set of temperature sensors, the temperature adjusting device includes a refrigeration heater, and the refrigeration heater is a semiconductor refrigerator.
The method is based on the fiber bragg grating sensing principle, utilizes various fiber bragg grating sensors to implant into pipelines and landslide area soil bodies and structural bodies arranged in the pipelines to monitor stress, strain, temperature and water content, so as to measure core parameters of deformation of rock and soil bodies in the landslide area, monitor deformation conditions of buried oil pipelines in the landslide area, effectively early warn geological disasters and pipeline damage conditions, and improve the technical level of monitoring of the oil pipelines in the landslide area.
Compared with the conventional electric measurement sensor, the fiber bragg grating sensor has the advantages of electromagnetic interference resistance, corrosion resistance, long-distance transmission, easiness in networking, good long-term stability and the like, and is widely applied to engineering detection and monitoring.
The Fiber Bragg Grating (FBG) technology is a quasi-distributed Fiber monitoring technology, and multiple FBGs can be strung on the same Fiber by using a multiplexing technology to form a monitoring network. The FBG sensing principle is to realize sensing by using a linear relationship between the wavelength variation of reflected light in the optical fiber and the axial strain or ambient temperature of the optical fiber, which can be expressed as:
where Δ λ is FBG wavelength variation, ε is fiber axial strain, Δ T is temperature variation, PeIs the elastic-optical coefficient of the optical fiber, alpha is the thermal expansion coefficient of the optical fiber, and xi is the thermo-optical coefficient of the optical fiber.
The invention has the beneficial effects that:
the landslide area pipeline comprehensive monitoring system has the functions of landslide disaster monitoring and pipeline deformation monitoring, can reflect the stability of a landslide body in real time, can comprehensively monitor the stress deformation state of a pipeline, and realizes multi-parameter monitoring of landslide area pipeline deformation. The fiber bragg grating sensing monitoring technology can be used for comprehensively and periodically monitoring deformation and temperature of a rock-soil body, supporting anti-slide piles, stress of an anchoring body, underground water level change and the like, and various indexes are used for distinguishing and early warning, so that the false alarm probability caused by a single factor is reduced, and the application value and the popularization prospect are improved;
the optical fiber grating sensors are small and flexible, and are easy to implant into various rock-soil bodies and structural bodies, so that the cost of large-scale excavation and laying is reduced; the high sensitivity of the fiber grating sensor improves the resolution and accuracy of measured data; the fiber grating sensor adopts light as a transmission medium, is not interfered by external factors such as an electromagnetic field and the like, and improves the long-term performance and the stability of monitoring; various fiber bragg grating sensors can be connected in series to form a network, so that the number of wiring is reduced, and the measurement efficiency is improved;
the monitoring system can be combined with a geological disaster event detector to detect landslide, rock rolling, collapse, tension crack and other events in time, and can realize remote automatic monitoring.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural diagram of functional modules of the present invention;
fig. 2 is a schematic view of the arrangement of the components of the present invention.
Labeled as: 1. a landslide stability monitoring module; 11. a fiber grating displacement meter; 12. a fiber grating inclinometer pipe; 13. a fiber grating fixed-point optical cable; 14. fixing a slope surface; 2. a landslide support monitoring module; 21. a fiber grating soil pressure cell; 22. fiber grating steel bar stress meter; 23. fiber grating anchor cable dynamometer; 24. embedding the fiber bragg grating into a strain gauge; 3. an environmental parameter monitoring module; 31. a fiber grating osmometer; 32. a fiber grating liquid level meter; 33. a fiber grating thermometer; 4. a pipeline strain monitoring module; 41. a fiber grating string; 5. a fiber grating demodulator; 6. a fiber grating sensor; 7. a pipeline; 8. a landslide area; 9. a transmission optical fiber; 10. monitoring the host; 11. wireless teletransmission networks.
Detailed Description
Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.
As shown in fig. 1 and 2, a landslide area pipeline deformation monitoring system comprises a landslide stability monitoring module 1, a landslide support monitoring module 2, an environmental parameter monitoring module 3, a pipeline strain monitoring module 4 and a fiber grating demodulator 5; the landslide stability monitoring module 1, the landslide support monitoring module 2, the environmental parameter monitoring module 3 and the pipeline strain monitoring module 4 use a plurality of fiber grating sensors 6 to monitor the deformation of the pipeline 7 and the landslide disaster condition of a landslide area 8 where the pipeline 7 is located. The landslide stability monitoring module 1, the landslide support monitoring module 2, the environmental parameter monitoring module 3 and the pipeline strain monitoring module 4 are connected with the fiber bragg grating demodulator 5 through the transmission optical fiber 9. And the fiber grating demodulator receives 5 and resolves signals transmitted by the landslide stability monitoring module, the landslide support monitoring module, the environmental parameter monitoring module and the pipeline strain monitoring module.
Specifically, the landslide stability monitoring module 1 is used for monitoring soil layer deformation and displacement of different depths in the landslide area 8. The landslide stability monitoring module 1 comprises a fiber grating displacement meter 11, a fiber grating inclinometer pipe 12 and a fiber grating fixed point optical cable 13.
The fiber grating displacement meters 11 are arranged in soil layers of different depths in the landslide area 8, and the fiber grating displacement meters 11 are connected in series through optical cables to monitor the deformation of the soil layers in the landslide area 8. The setting method of the fiber grating displacement meter 11 is as follows: a plurality of fiber bragg grating displacement meters 11 are respectively embedded into a monitoring target stratum by utilizing pile holes on a landslide area 8 to be monitored and then are connected in series by optical cables.
The fiber bragg grating inclinometer 12 is arranged below the basal rock surface of the landslide area 8 and used for monitoring the horizontal displacement of the soil body at the deep part of the landslide area 8. The setting method of the fiber grating inclinometer 12 comprises the following steps: and (3) drilling a process borehole on the landslide area 8 to be monitored by using a geological borehole along the plumb direction of the landslide body, wherein the depth of the borehole extends to 3-5M below the surface of the bedrock, lowering the fiber grating inclinometer pipe after hole cleaning is finished, adjusting the direction of the guide groove during lowering to enable the direction of the fiber grating inclinometer pipe 12 to face the sliding direction of the landslide body, and backfilling M5 cement mortar after the completion. The plurality of fiber grating inclinometer pipes 12 are connected in series by one optical fiber, the strength of the optical fiber is higher than that of a common fiber grating string, because a coating layer needs to be stripped when the common fiber grating string is etched, the coating layer is not stripped when the optical fiber used by the fiber grating inclinometer pipes 12 is etched.
The fiber bragg grating fixed-point optical cable 13 is fixed between two slope surface fixing objects 14 on the surface of the landslide area 8 along the main sliding direction of the landslide area 8 and used for monitoring the deformation of the landslide area 8 along the slope surface direction. The fiber grating fixed point optical cable 13 measures the strain between the two slope surface fixtures 14, and calculates the relative displacement between the two slope surface fixtures 14, so as to obtain the deformation along the slope surface direction.
Specifically, the landslide supporting body monitoring module 2 is used for monitoring the deformation and the strain of the pipeline 7 and the landslide area supporting facilities. The landslide supporting body monitoring module 2 comprises a fiber grating soil pressure cell 21, a fiber grating steel bar stress meter 22, a fiber grating anchor cable dynamometer 23 and a fiber grating embedded strain gauge 24. The landslide supporting facility comprises a pile body; the pile body comprises steel bars, and the steel bars comprise anchor rods and steel bar cages.
The fiber grating soil pressure boxes 21 are arranged on two sides of the pipeline 7 and used for monitoring the pressure of soil on the wall of the pipeline 7. The setting method of the fiber grating soil pressure cell 21 is as follows: two groups of fiber grating soil pressure boxes 21 are arranged along the direction of the pipeline 7, grooves are formed in two sides, the depth of the grooves is consistent with the buried depth of the pipeline 7, the stress sensitive surface of each fiber grating soil pressure box 21 faces the sliding direction of the landslide region 8, soil is backfilled, therefore, the thrust of soil of the landslide region 8 on the pipe body 6 can be measured by one group of fiber grating soil pressure boxes 21 on the upper portion, the thrust of the pipe body 6 on the soil of the landslide region 8 can be measured by one group of fiber grating soil pressure boxes 21 on the lower portion, and the difference value of the two can be regarded as the anti-sliding force of the pipe body 6 on the soil of the.
The fiber grating reinforcement stress gauge 22 is welded on the reinforcement cage and the anchor rod for measuring the strain force of the reinforcement. The setting method of the fiber grating steel bar stress meter 22 is as follows: cutting off the anchor rod, and installing the anchor rod at the breakpoint to measure the internal force of the anchor rod; and welding the fiber grating steel bar stress meter 22 on a steel bar cage to measure the internal force of the pile body.
The fiber grating anchor line dynamometer 23 is used for measuring the strain force of the anchor head of the anchor rod. The setting method of the fiber grating anchor cable dynamometer 23 is as follows: and cutting off the anchor rod, and welding and installing the anchor rod at the anchor head.
The fiber bragg grating embedded strain gauge 24 is bound on the reinforcement cage, poured together with the reinforcement cage and symmetrically arranged along two sides of the reinforcement cage, and is used for measuring the deformation and the strain force in the pile body.
Specifically, the environmental parameter monitoring module 3 is used for monitoring the soil layer temperature of different depths of the landslide area 8, the pore water pressure of a water-containing layer and the water level of the water around the landslide area 8. The environmental parameter monitoring module 3 comprises a fiber grating osmometer 31, a fiber grating liquid level meter 32 and a fiber grating thermometer 33.
The fiber grating osmometer 31, the fiber grating liquid level meter 32 and the fiber grating thermometer 33 are respectively arranged in soil layers with different depths and used for monitoring the temperature, the water level and the pore water pressure of a water-bearing layer in soil layers with different depths of the landslide area 8. The setting method of the fiber grating osmometer 31 and the fiber grating liquid level meter 32 is as follows: and (3) drilling holes on the landslide to be monitored by using a geological drilling process, wherein the drilling depth is below the water level, and the fiber grating osmometer 31 and the fiber grating liquid level meter 32 are placed at different depths to measure the pore water pressure and the water level of soil layers at different depths. The setting method of the fiber grating thermometer 33 is as follows: the landslide area 8 to be monitored is drilled by a geological drilling process, and the fiber grating thermometer 33 is placed at different depths to measure the change of the geothermal field. The fiber grating level gauge 32 may also be used to monitor the water level in the water surrounding the landslide area 8, such as a river, gully, etc.
Specifically, the pipeline strain monitoring module 4 is used for monitoring the axial strain force and strain value of the pipeline 7. The pipeline strain monitoring module 4 comprises a fiber grating string 41, and the fiber grating string 41 is axially arranged along the surface of the pipeline 7 and used for monitoring the axial strain force and the strain value of the pipeline 7. The pipeline strain monitoring module 4 is composed of a specially-made fiber grating string 41, a plurality of grating points can be engraved on the same optical fiber according to actual requirements, and the intervals between the grating points can be customized. By laying the fiber grating string 41 axially along the pipeline 7, axial strain monitoring of the pipeline 7 can be achieved. The specific installation method of the fiber grating string 41 is as follows: scraping an anticorrosive coating on the surface of the pipeline 7, polishing the surface of the pipeline 7 smoothly, laying according to actual required point positions, firstly preliminarily fixing by using quick-drying glue, then coating a layer of epoxy resin, and standing for 24 hours. The fiber grating string 41 is adhered to the surface of the pipeline 7 along the axial direction of the pipeline 7, so that the axial strain value of the pipeline 7 can be measured, and the stress can be obtained according to the elastic theory of steel materials and the known strain and elastic modulus.
Specifically, the monitoring system further comprises a monitoring host 10, and the monitoring host 10 receives data transmitted by the fiber grating demodulator 5 through the wireless remote transmission network 101 and performs data processing. The monitoring host 10 may be a personal computer.
Specifically, one end of each fiber grating sensor 6 is connected with a welding lead in series, and the other end of each fiber grating sensor 6 is connected with a fiber grating demodulator 5 through a welding jumper.
Specifically, the wireless remote transmission network 101 is a 3G or 4G mobile communication network.
Specifically, the fiber grating demodulator 5 may be a portable demodulator for on-site analysis, calculation and monitoring, and the fiber grating demodulator 5 may also be a multi-channel fiber grating network analyzer for centralized remote analysis, calculation and monitoring.
Specifically, the fiber grating demodulator 5 includes a temperature control system, the temperature control system includes a temperature control circuit, a temperature sensor and a temperature adjusting device, the temperature sensor is coupled with the temperature control circuit, the temperature adjusting device is coupled with the temperature control circuit, the temperature sensor includes a set of temperature sensor, the temperature adjusting device includes a refrigeration heater, and the refrigeration heater is a semiconductor refrigerator.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A landslide area pipeline deformation monitoring system is characterized by comprising a landslide stability monitoring module, a landslide support body monitoring module, an environmental parameter monitoring module, a pipeline strain monitoring module and a fiber bragg grating demodulator;
the landslide stability monitoring module, the landslide support monitoring module, the environmental parameter monitoring module and the pipeline strain monitoring module monitor and monitor pipeline deformation and landslide disaster conditions of a landslide area where the pipeline is located by using a plurality of fiber bragg grating sensors;
the landslide stability monitoring module, the landslide support monitoring module, the environmental parameter monitoring module and the pipeline strain monitoring module are connected with the fiber bragg grating demodulator through transmission optical fibers;
the landslide stability monitoring module is used for monitoring soil layer deformation and displacement at different depths of a landslide area;
the landslide supporting body monitoring module is used for monitoring the deformation and the strain of the pipeline and the supporting facilities in the landslide area;
the environment parameter monitoring module is used for monitoring soil layer temperatures at different depths of a landslide area, pore water pressure of a water-bearing layer and water level of water around the landslide area;
the pipeline strain monitoring module is used for monitoring the axial strain force and strain value of the pipeline;
the fiber grating demodulator receives and resolves signals transmitted by the landslide stability monitoring module, the landslide support body monitoring module, the environment parameter monitoring module and the pipeline strain monitoring module.
2. The landslide area pipeline deformation monitoring system of claim 1, wherein the landslide stability monitoring module comprises a fiber grating displacement meter, a fiber grating inclinometer tube and a fiber grating fixed point optical cable; the fiber grating displacement meters are arranged in soil layers at different depths in the landslide area, and are connected in series through optical cables to detect the deformation of each soil layer in the landslide area; the fiber bragg grating inclinometer is arranged below a bed rock surface of the landslide area and used for monitoring horizontal displacement of a deep soil body of the landslide area; the fiber bragg grating fixed-point optical cable is fixed between two slope surface fixtures on the surface of the landslide area along the main landslide direction of the landslide area and is used for monitoring the deformation of the landslide area along the slope surface direction.
3. The landslide area pipeline deformation monitoring system according to claim 1, wherein the landslide support monitoring module comprises a fiber grating soil pressure box, a fiber grating steel bar stress meter, a fiber grating anchor cable dynamometer and a fiber grating embedded strain gauge, wherein the fiber grating soil pressure box is arranged on two sides of the pipeline and used for monitoring the pressure of the soil body on the wall of the pipeline; the landslide supporting facility comprises a pile body; the pile body comprises a steel bar, and the steel bar comprises an anchor rod and a steel bar cage; the fiber grating reinforcing steel bar stress meter is welded on the reinforcing steel bar cage and the anchor rod and is used for measuring the strain force of the reinforcing steel bar; the fiber bragg grating anchor cable dynamometer is used for measuring the strain force of the anchor head of the anchor rod; and the fiber bragg grating embedded strain gauge is bound on the reinforcement cage and used for measuring the deformation and the strain force in the pile body.
4. The landslide area pipeline deformation monitoring system of claim 1, wherein the environmental parameter monitoring module comprises a fiber grating osmometer, a fiber grating liquid level meter and a fiber grating thermometer, and the fiber grating osmometer, the fiber grating liquid level meter and the fiber grating thermometer are arranged in different depth soil layers and are respectively used for monitoring the temperature, the water level and the pore water pressure of water-bearing layers in different depth soil layers in the landslide area.
5. The landslide section pipeline deformation monitoring system of claim 1 wherein the pipeline strain monitoring module comprises a fiber grating string disposed axially along a pipeline surface for monitoring pipeline axial strain forces and strain values.
6. The landslide area pipeline deformation monitoring system of claim 1 further comprising a monitoring host, wherein the monitoring host receives data transmitted by the fiber grating demodulator through a wireless remote transmission network and performs data processing.
7. The landslide area pipeline deformation monitoring system of claim 1 wherein one end of each fiber grating sensor is connected in series with a fused lead wire, and the other end of each fiber grating sensor is connected with the fiber grating demodulator by a fused jumper wire.
8. The landslide section pipeline deformation monitoring system of claim 6 wherein the wireless remote transmission network is a 3G or 4G mobile communication network.
9. The landslide area pipeline deformation monitoring system of claim 1 wherein the fiber grating demodulator comprises a temperature control system comprising a temperature control circuit, a temperature sensor and a temperature regulating device.
10. The landslide section pipeline deformation monitoring system of claim 9 wherein the temperature sensor is coupled to the temperature control circuit, the temperature adjustment device is coupled to the temperature control circuit, the temperature sensor comprises a set of temperature sensors, the temperature adjustment device comprises a refrigeration heater, and the refrigeration heater is a semiconductor refrigerator.
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| CN113175912A (en) * | 2021-03-30 | 2021-07-27 | 中国地质大学（武汉） | Unmanned landslide transverse deformation monitoring system and method based on inertial measurement technology |
| CN113624276A (en) * | 2021-07-23 | 2021-11-09 | 国家石油天然气管网集团有限公司 | Monitoring device and monitoring method for pipeline landslide-slide-resistant pile structure combination |
| CN114279394A (en) * | 2021-12-24 | 2022-04-05 | 广西北投交通养护科技集团有限公司 | A real-time online continuous monitoring method for tunnel deformation |
| CN114646272A (en) * | 2022-02-27 | 2022-06-21 | 桂林电子科技大学 | Optical fiber deformation calculation method and landslide warning system for anchoring landslide bolts |
| CN117848559A (en) * | 2024-03-04 | 2024-04-09 | 成都理工大学 | Landslide thrust monitoring device, assembly and monitoring method |
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