Landslide fracture point cooperative positioning monitoring device and method

The integrated landslide rupture point collaborative positioning and monitoring device, which combines above-ground and underground monitoring modules and data acquisition units, enables precise positioning and real-time monitoring of the landslide initiation point. This solves the problems of inaccurate positioning of the landslide initiation point and discontinuous data in existing technologies, thereby improving monitoring efficiency and early warning capabilities.

CN122041981APending Publication Date: 2026-05-15YANGTZE UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
YANGTZE UNIVERSITY
Filing Date
2026-03-03
Publication Date
2026-05-15

AI Technical Summary

Technical Problem

Existing technologies cannot accurately locate the initiation point of landslides. The lack of spatiotemporal synchronization and data fusion between surface and underground monitoring systems makes it difficult to achieve closed-loop analysis of deformation-mechanism-source. Furthermore, monitoring equipment is susceptible to adverse environmental conditions, resulting in unstable data continuity.

Method used

The system adopts an integrated design of above-ground and underground monitoring modules, combined with a data acquisition unit. Through components such as an environmental measurement unit, microseismic monitoring device, and inclinometer, it monitors environmental and crustal data in real time. It also performs analysis in conjunction with a back-end server through a three-dimensional layout to calculate the coordinates of the landslide initiation point.

Benefits of technology

It enables accurate identification and prevention of landslide initiation points, improves monitoring efficiency, facilitates the prediction and early warning of geological disasters, and reduces the difficulty of equipment maintenance and the problem of data discontinuity.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention relates to the technical field of geological disaster monitoring, in particular to a landslide fracture point cooperative positioning monitoring device, and discloses a landslide fracture point cooperative positioning monitoring method at the same time. Comprising an overground monitoring module, an underground monitoring module and a data acquisition unit, the overground monitoring module is arranged above the earth surface of a monitoring point, and the underground monitoring module is buried under the earth surface of the monitoring point; the overground monitoring module is used for monitoring environment temperature, humidity and precipitation data at a monitoring point, and the underground monitoring module is used for monitoring earth crust displacement and vibration data below the monitoring point; the system is reasonable in structure, the overground monitoring module, the underground monitoring module and the data acquisition unit can monitor environment temperature, humidity and precipitation data and earth crust displacement and vibration data in real time, the position of a landslide fracture point can be accurately measured through networking data, the monitoring efficiency is improved, and geological research and prejudgment and early warning of geological disasters are facilitated.
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Description

Technical Field

[0001] This invention relates to the field of geological disaster monitoring technology, specifically to a landslide rupture point collaborative positioning monitoring device, and also discloses a landslide rupture point collaborative positioning monitoring method. Background Technology

[0002] Currently, my country has identified numerous potential landslide sites, and the hazards of landslides are extremely serious. Natural factors triggering landslides include rainfall, earthquakes, and groundwater activity, compounded by engineering activities such as slope cutting, mining, and infrastructure construction, posing a significant threat to mountain residents, infrastructure, and water conservancy projects. The precise location of the initiation point, as the source of a landslide, is a core prerequisite for early warning, disaster cause analysis, and mitigation design. Traditional manual inspections and point-based monitoring are insufficient to meet the real-time dynamic monitoring needs of large-scale, high-risk areas. There is an urgent need for millimeter-level precision, all-weather continuous monitoring capabilities, and integrated surface-subsurface monitoring to achieve full-cycle tracking and accurate early warning of landslide deformation.

[0003] Existing geological monitoring systems operate independently, one for the surface and one for the subsurface. Data lacks spatiotemporal synchronization and fusion, hindering closed-loop analysis of deformation, mechanism, and source, and making it difficult to accurately estimate the location of the slip point. Manual data collection suffers from poor timeliness and high risk; monitoring equipment is susceptible to harsh environments, exhibiting high power consumption, maintenance difficulties, and unstable data continuity. Current multi-source monitoring methods often involve simple overlay, lacking a unified time reference, coordinate system, and data fusion algorithm, making it difficult to achieve coupled analysis of the surface-subsurface deformation field and dynamic tracking of the slip point.

[0004] Therefore, existing technologies still need to be improved and developed. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings and deficiencies of existing technologies by providing a landslide rupture point collaborative positioning monitoring device with a reasonable structure for constructing an integrated "surface-underground" monitoring system, which can accurately identify the initiation point and prevent landslide disasters.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] The present invention discloses a collaborative location monitoring device for landslide rupture points, comprising an above-ground monitoring module, an underground monitoring module, and a data acquisition unit. The above-ground monitoring module is installed above the ground surface of the monitoring point, and the underground monitoring module is buried below the ground surface of the monitoring point. A pile foundation is provided at the monitoring point, with the lower end of the pile foundation inserted into the ground and connected to the underground monitoring module, and the upper end of the pile foundation connected to the above-ground monitoring module. The above-ground monitoring module is used to monitor the ambient temperature, humidity, and precipitation data at the monitoring point, and the underground monitoring module is used to monitor the crustal displacement and vibration data below the monitoring point.

[0008] According to the above scheme, the ground monitoring module includes a main control box, an environmental measurement unit, and a monitoring probe. The environmental measurement unit is installed inside the main control box and includes a temperature monitoring sensor, a humidity monitoring sensor, and a precipitation monitoring sensor. The main control box is fixedly connected to the upper end of the pile foundation, and the monitoring probe is connected to the main control box through a bracket and suspended on the outside of the main control box.

[0009] According to the above scheme, the underground monitoring module includes a pre-buried pipe, an inclinometer, and a microseismic monitoring device. The pre-buried pipe is buried below the ground surface at the monitoring point. Two guide grooves are opened on the inner wall of the pre-buried pipe along its length. The inclinometer is equipped with two probes, which are paired and spaced apart. Rollers are provided at both ends of the probes, and the rollers are slidably connected to the guide grooves, allowing the inclinometer to move up and down along the pre-buried pipe. The microseismic monitoring device is located below the inclinometer and is fixedly connected to the pre-buried pipe.

[0010] According to the above scheme, the micro-vibration monitoring device includes a fixed housing, a vibration sensor, a fixed airbag, and an inflation device. The fixed airbag is arranged around the fixed housing. The inflation device is connected to the fixed airbag through a hose. After the fixed airbag is inflated, it fills the space between the fixed housing and the pre-embedded pipe, so that the fixed housing is fixedly installed in the pre-embedded pipe. The vibration sensor is fixedly installed in the fixed housing. The lower end of the fixed housing is provided with a resonance head through a connecting rod.

[0011] According to the above scheme, a winding device is provided on the pile foundation, and the cable on the winding device is connected to the upper end of the inclinometer. The lower end of the inclinometer is provided with a counterweight.

[0012] According to the above scheme, the microseismic monitoring device is equipped with an electromagnet that is paired with the counterweight iron, and a cable connects the inclinometer and the microseismic monitoring device.

[0013] According to the above scheme, the pile foundation is equipped with a solar panel and a storage battery. The solar panel is connected to the pile foundation through an angle adjustment device, and the solar panel is connected to the storage battery through a line. The storage battery supplies power to the environmental measurement unit, monitoring probe, inclinometer, vibration sensor, winding device and electromagnet.

[0014] According to the above scheme, the present invention also includes a data acquisition module, which is set in the main control box. The energy storage battery powers the data acquisition module. The data acquisition module collects data from the environmental measurement unit, monitoring probe, inclinometer, and vibration sensor based on the line. The data acquisition module is equipped with a communication unit.

[0015] A collaborative location monitoring method for landslide rupture points includes the following steps:

[0016] S1. Within the monitoring area, select six monitoring points at different altitudes, drill holes at the monitoring points and install the landslide rupture point collaborative positioning monitoring device. The six sets of the landslide rupture point collaborative positioning monitoring device are connected to the background server to form a three-dimensional monitoring network.

[0017] S2. The data acquisition module collects data from the environmental measurement unit, monitoring probe, inclinometer, and vibration sensor, and sends it to the backend server through the communication module to realize the linkage analysis of three-dimensional data.

[0018] S3. In the three-dimensional coordinate system within the monitoring area, the coordinates of the landslide initiation point are D(x, y, z), and the coordinates of the vibration sensor are Ai(xi, yi, zi), i=1, 2, 3, 4, 5, 6. Then, the governing equation expression for the landslide initiation point coordinates D(x, y, z) is:

[0019] Equation (1):

[0020] Equation (2):

[0021] Equation (3):

[0022] Equation (4):

[0023] Equation (5):

[0024] Equation (6):

[0025] Where t0 is the travel time between the landslide initiation point and the nearest vibration sensor, the time delay between this vibration sensor and other vibration sensors is t12, t13, t14, t15 and t16, v is the average wave velocity of the P wave; expressions (1)...(6) are six spherical equations, the centers of the spheres are the coordinates of the six vibration sensors respectively ( … ), ( … () … );

[0026] S4, In step S3, expression (1) intersects with expression (2…6) to form a circular surface. … The landslide starting point D is located on a circular surface ( … On the circular surface () … The expression for ) is:

[0027]

[0028]

[0029]

[0030]

[0031]

[0032] S5. Calculate the coordinates D(x, y, z) of the landslide starting point according to step S4. Based on the location of the landslide starting point D on the sliding zone, the landslide can be classified into traction landslide, push landslide and composite landslide.

[0033] S6. Locate the accurate coordinates of the landslide initiation point, calculate the remaining thrust corresponding to the sliding at that point, and analyze the impact of the sliding at that point on the entire landslide body based on the relationship between the remaining thrust and the safety factor, so as to provide theoretical basis and data support for subsequent prevention and control work.

[0034] The beneficial effects of this invention are as follows: The invention has a reasonable structure, with the above-ground monitoring module, underground monitoring module and data acquisition unit set up as a whole at the monitoring point, which can monitor environmental temperature, humidity and precipitation data, as well as crustal displacement and vibration data in real time; by arranging multiple sets of monitoring devices in three dimensions and networking them to collect data, the location of landslide rupture points can be accurately determined, improving monitoring efficiency and facilitating geological research and the prediction and early warning of geological disasters. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0036] Figure 2 This is a schematic diagram of the underground monitoring module structure of the present invention;

[0037] Figure 3 This is a schematic diagram of the traction-type landslide of the present invention;

[0038] Figure 4 This is a schematic diagram of the sliding landslide of the present invention;

[0039] Figure 5 This is a schematic diagram of the composite landslide of the present invention;

[0040] Figure 6 This is a schematic diagram of the layout of the present invention on a landslide.

[0041] In the picture:

[0042] 1. Above-ground monitoring module; 2. Underground monitoring module; 3. Pile foundation; 11. Main control box; 12. Environmental measurement unit; 111. Monitoring probe; 112. Temperature monitoring sensor; 113. Humidity monitoring sensor; 114. Precipitation monitoring sensor; 115. Support frame; 21. Embedded pipe; 22. Inclinometer; 23. Microseismic monitoring device; 24. Counterweight; 25. Electromagnet; 211. Guide groove; 221. Probe; 222. Roller; 231. Mounting shell; 232. Vibration sensor; 234. Fixed airbag; 235. Inflation device; 236. Hose; 237. Resonant head; 31. Winding device; 32. Cable; 33. Solar substrate; 34. Angle adjustment device. Detailed Implementation

[0043] The technical solution of the present invention will be described below with reference to the accompanying drawings and embodiments.

[0044] like Figure 1-2 As shown, the landslide rupture point collaborative positioning and monitoring device of the present invention includes an above-ground monitoring module 1, an underground monitoring module 2, and a data acquisition unit. The above-ground monitoring module 1 is set on the ground surface of the monitoring point, and the underground monitoring module 2 is buried below the ground surface of the monitoring point. A pile foundation 3 is provided on the monitoring point. The lower end of the pile foundation 3 is inserted into the ground and connected to the underground monitoring module 2, and the upper end of the pile foundation 3 is connected to the above-ground monitoring module 1. The above-ground monitoring module 1 is used to monitor the ambient temperature, humidity, and precipitation data at the monitoring point, and the underground monitoring module 2 is used to monitor the crustal displacement and vibration data below the monitoring point.

[0045] It is understood that this invention is used to monitor geological change data on hillsides, and to determine and locate the rupture point of landslides through data analysis. It is divided into two parts: above-ground monitoring module 1 and underground monitoring module 2, which can improve the overall monitoring efficiency and facilitate geological research and the prediction and early warning of geological disasters.

[0046] First, a monitoring point is selected within the monitoring area. A hole is drilled downwards at the monitoring point, and the underground monitoring module 2 is buried below the ground surface to monitor crustal displacement and vibration data. Then, a pile foundation 3 is installed at the monitoring point. The bottom of the pile foundation 3 needs to be reinforced with concrete or reinforced to ensure stability. The lower part of the pile foundation 3 is inserted into the hole to connect to the underground monitoring module 2, while the above-ground monitoring module 2 is installed at the upper part of the pile foundation 3 to monitor environmental data.

[0047] This invention integrates the above-ground monitoring module 1 and the underground monitoring module 2 into a single unit to monitor environmental temperature, humidity, precipitation data, crustal displacement and vibration data. Multiple monitoring points can be set up within the monitoring area to deploy monitoring devices, achieving a three-dimensional layout and networked data collection, thereby accurately determining the location of landslide rupture points, improving monitoring efficiency, and facilitating geological research and the prediction and early warning of geological disasters.

[0048] Specifically, the ground monitoring module 1 includes a main control box 11, an environmental measurement unit 12, and a monitoring probe 111. The environmental measurement unit 12 is installed inside the main control box 11 and includes a temperature monitoring sensor 112, a humidity monitoring sensor 113, and a precipitation monitoring sensor 114. The main control box 11 is fixedly connected to the upper end of the pile foundation 3. The monitoring probe 111 is connected to the main control box 11 via a bracket 115 and suspended on the outside of the main control box 11. The temperature monitoring sensor 112, humidity monitoring sensor 113, and precipitation monitoring sensor 114 are existing technologies, and their working principles will not be elaborated here. The main control box 11 is used to install the temperature monitoring sensor 112, humidity monitoring sensor 113, and precipitation monitoring sensor 114, which can monitor the environmental parameters of the monitoring point in real time. Furthermore, the main control box 11 is connected to the monitoring probe 111 via the bracket 115 to monitor changes in the surface environment.

[0049] The underground monitoring module 2 includes a pre-buried pipe 21, an inclinometer 22, and a microseismic monitoring device 23. The pre-buried pipe 21 is buried below the ground surface at the monitoring point. Two guide grooves 211 are formed on the inner wall of the pre-buried pipe 21, extending along its length. The inclinometer 22 has two probes 221, which are paired vertically and spaced apart. Rollers 222 are provided at both ends of each probe 221, and these rollers 222 are slidably connected to the guide grooves 211, allowing the inclinometer 22 to move up and down along the pre-buried pipe 21. The microseismic monitoring device 23 is located below the inclinometer 22 and is fixedly connected to the pre-buried pipe 21. The inclinometer 22 is existing technology, featuring two probes 221 connected to an accelerometer inside the inclinometer 22. The two ends of the probes 221 can slide along the guide grooves 211 via the rollers 222. Specifically, a hole is drilled vertically downwards at the monitoring point, and the pre-embedded pipe 21 is inserted into the hole, leveled, and fixed to ensure that the pre-embedded pipe 21 is as vertical as possible downwards. If a landslide or other situation occurs at the monitoring point, the pre-embedded pipe 21 will shift. The inclinometer 22 moves up and down along the pre-embedded pipe 21 to measure the tilt angle data of the pre-embedded pipe 21.

[0050] Furthermore, the pre-embedded pipe 21 is also equipped with a microseismic monitoring device 23. The occurrence of landslide rupture points is inevitably accompanied by vibration, and the microseismic monitoring device 23 can monitor the vibration data at the monitoring point. Furthermore, the microseismic monitoring device 23 can be linked with the inclinometer 22, that is, after vibration occurs, the inclinometer 22 measures the inclination of the pre-embedded pipe 21.

[0051] The microseismic monitoring device 23 includes a fixed housing 231, a vibration sensor 232, a fixed airbag 234, and an inflation device 235. The fixed airbag 234 is arranged around the fixed housing 231. The inflation device 235 is connected to the fixed airbag 234 through a hose 236. After inflation, the fixed airbag 234 fills the space between the fixed housing 231 and the pre-embedded pipe 21, thus fixing the fixed housing 231 inside the pre-embedded pipe 21. The vibration sensor 232 is fixedly installed inside the fixed housing 231. A resonant head 237 is provided at the lower end of the fixed housing 231 via a connecting rod. The resonant head 237 is suspended below the fixed housing 231 and connected to the fixed housing 231 via a connecting rod. The resonant head 237 can absorb crustal vibrations and transmit them to the vibration sensor 232. It is understood that the vibration sensor 232 can monitor the vibration data of the earth's crust in real time. The vibration sensor 232 is set with a threshold. When the vibration data exceeds the threshold, the inclinometer 22 moves along the pre-buried pipe 21 to collect tilt data once.

[0052] Specifically, the fixed airbag 234 is arranged around the fixed housing 231. After the fixed housing 231 is inserted into the pre-embedded tube 21, the inflation device 235 inflates the fixed airbag 234. The fixed airbag 234 fills the gap between the fixed housing 231 and the pre-embedded tube 21, so that the fixed housing 231 is fixed in the pre-embedded tube 21, and the resonant head 237 is suspended below the fixed housing 231.

[0053] A winding device 31 is provided on the pile foundation 3. The cable 32 on the winding device 31 is connected to the upper end of the inclinometer 22, and a counterweight 24 is provided at the lower end of the inclinometer 22. The winding device 31 is used to pull the inclinometer 22 upward along the pre-embedded pipe 21. When the winding device 31 unwinds, the counterweight 24 causes the inclinometer 22 to descend along the pre-embedded pipe 21 under the action of gravity. It can be understood that the two probes 221 on the inclinometer 22 are rotatably connected to the inclinometer 22. Of course, there is a pre-tension between the probes 221 and the inclinometer 22. The cable 32 on the winding device 31 is connected to the upper end of the inclinometer 22, and the counterweight 24 is set at the lower end of the inclinometer 22. The action of gravity can keep the inclinometer 22 in a vertical state. If the pre-embedded pipe 21 has an inclination, when the inclinometer 22 slides down along the pre-embedded pipe 21, the probe 221 and the inclinometer 22 will deviate, thereby detecting the inclination parameter of the pre-embedded pipe 21.

[0054] Preferably, the microseismic monitoring device 23 is equipped with an electromagnet 25 that matches the counterweight 24, and a cable 32 connects the inclinometer 22 and the microseismic monitoring device 23. The cable 32 connects the inclinometer 22 and the microseismic monitoring device 23 so that they can be installed together into the pre-embedded pipe 21. After the microseismic monitoring device 23 is installed in place, the winding device 31 stops unwinding, and then the inflation device 235 inflates the fixing airbag 234 to fix the mounting shell 231 in the pre-embedded pipe 21.

[0055] Understandably, the electromagnet 25 is also connected to the cable 32 between the inclinometer 22 and the microseismic monitoring device 23, allowing the electromagnet 25 to move relative to either the inclinometer 22 or the microseismic monitoring device 23. When the inclinometer 22 becomes stuck inside the pre-embedded pipe 21, the electromagnet 25 is energized, causing it to attract the counterweight 24. The resulting impact force can loosen the inclinometer 22 inside the pre-embedded pipe 21.

[0056] The monitoring device is typically installed in the field where there is a lack of power supply network. A solar panel 33 and a storage battery are mounted on the pile foundation 3. The solar panel 33 is connected to the pile foundation 3 via an angle adjustment device 34 and is connected to the storage battery via a line. The solar panel 33 can charge the storage battery, which in turn supplies power to the environmental measurement unit 12, monitoring probe 111, inclinometer 22, vibration sensor 232, winding device 31, and electromagnet 25 to maintain the operation of the monitoring device. Since seasonal changes cause variations in the angle of sunlight, an angle adjustment device 34 is preferably provided between the solar panel 33 and the pile foundation 3. During operation and maintenance, the angle of the solar panel 33 can be adjusted according to the season to ensure the long-term stable operation of the monitoring device and reduce the frequency of maintenance.

[0057] The invention also includes a data acquisition module, which is housed within the main control box 11. A storage battery powers the data acquisition module. The module collects data from the environmental measurement unit 12, monitoring probe 111, inclinometer 22, and vibration sensor 232. A communication unit is also provided on the data acquisition module. The data acquisition module is integrated into the main control box 11. Alternatively, the storage battery can be housed within the main controller 11 for protection, ensuring the stability of both the storage battery and the data acquisition module. The data acquisition module collects data and transmits it to a backend server via the communication unit. Specifically, when multiple monitoring points are deployed within the monitoring area, the data acquisition module can be networked to form a monitoring network, enabling three-dimensional collaborative monitoring of the monitoring area.

[0058] A collaborative location monitoring method for landslide rupture points includes the following steps:

[0059] S1. Within the monitoring area, select six monitoring points at different altitudes, such as... Figure 6 As shown, holes are drilled at the monitoring points and the aforementioned landslide rupture point collaborative positioning monitoring device is installed. Six sets of the aforementioned landslide rupture point collaborative positioning monitoring device are connected to the background server to form a three-dimensional monitoring network.

[0060] S2. The data acquisition module collects data from the environmental measurement unit 12, monitoring probe 111, inclinometer 22, and vibration sensor 232, and sends it to the backend server through the communication module to realize the linkage analysis of three-dimensional data.

[0061] S3. In the three-dimensional coordinate system within the monitoring area, the coordinates of the landslide initiation point are D(x, y, z), and the coordinates of the vibration sensor are Ai(xi, yi, zi), i=1, 2, 3, 4, 5, 6. Then, the governing equation expression for the landslide initiation point coordinates D(x, y, z) is:

[0062] Equation (1):

[0063] Equation (2):

[0064] Equation (3):

[0065] Equation (4):

[0066] Equation (5):

[0067] Equation (6):

[0068] Where t0 is the travel time between the landslide initiation point and the nearest vibration sensor, the time delay between this vibration sensor and other vibration sensors is t12, t13, t14, t15 and t16, v is the average wave velocity of the P wave; expressions (1)...(6) are six spherical equations, the centers of the spheres are the coordinates of the six vibration sensors respectively ( … ), ( … () … );

[0069] S4, In step S3, expression (1) intersects with expression (2…6) to form a circular surface. … The landslide starting point D is located on a circular surface ( … On the circular surface () … The expression for ) is:

[0070]

[0071]

[0072]

[0073]

[0074]

[0075] Simplifying the above expression, we get:

[0076]

[0077]

[0078]

[0079]

[0080]

[0081] Let S = v²t0, then we get:

[0082]

[0083]

[0084]

[0085]

[0086]

[0087] Eliminating S from the above expression using elimination yields:

[0088]

[0089]

[0090]

[0091]

[0092] Given:

[0093]

[0094]

[0095]

[0096]

[0097]

[0098]

[0099]

[0100]

[0101]

[0102]

[0103]

[0104]

[0105]

[0106]

[0107]

[0108]

[0109]

[0110]

[0111]

[0112]

[0113] Eliminating S from the above expression using elimination yields:

[0114]

[0115]

[0116]

[0117] Given:

[0118]

[0119]

[0120]

[0121]

[0122]

[0123]

[0124]

[0125]

[0126]

[0127]

[0128]

[0129]

[0130] The coordinates D(x, y, z) of the landslide initiation point can be obtained using the elimination method:

[0131]

[0132]

[0133]

[0134] S5. Based on step S4, the coordinates D(x, y, z) of the landslide initiation point are calculated. According to the location of the landslide initiation point D on the sliding zone, the landslide can be classified into traction landslides, shove landslides, and composite landslides. Specifically:

[0135] (1) Traction-type landslide

[0136] like Figure 3 As shown, traction landslides are a progressive, retreating failure process, with the critical state blocks gradually advancing backward. Therefore, blocks 1 to m-1 above the m-th block are in a pre-peak stress state and have not undergone shear failure, i.e., the stable block Em-1=0. The criterion for determining if the m-th block is a critical state block is:

[0137] =

[0138] =( cos -∆ sin - )tan +

[0139] = sin +∆ cos

[0140] After determining the critical block, the asymptotic failure stability formula is used:

[0141] =

[0142] (2) Push-type landslide

[0143] like Figure 4 As shown, a push-type landslide is a progressive failure, with the critical state blocks gradually advancing forward. Blocks 1 to m-1 above block m are in a state of residual stress and undergo shear failure, i.e., they are unstable blocks (Em−1>0). Therefore, the force on block m must consider the thrust from the upper blocks. The criterion for determining if block m is a critical state block is:

[0144] =

[0145] =( cos + -∆ sin - )tan +

[0146] = sin + +∆ cos

[0147] After determining the critical block, the asymptotic failure stability formula is used:

[0148]

[0149] (3) Composite landslide

[0150] like Figure 5 As shown, a complex landslide is a complex progressive failure process. There are two critical state blocks in the progressive evolution process. The criteria for identifying the two critical state blocks are as follows: the first critical state block is determined according to the method for determining traction landslides, and the second critical state block is determined according to the method for determining shove landslides.

[0151] After determining the critical block, the asymptotic failure stability formula is used:

[0152]

[0153]

[0154] S6. Locate the accurate coordinates of the landslide initiation point, calculate the remaining thrust corresponding to the sliding at that point, and analyze the impact of the sliding at that point on the entire landslide body based on the relationship between the remaining thrust and the safety factor, so as to provide theoretical basis and data support for subsequent prevention and control work.

[0155] The above description is only a preferred embodiment of the present invention. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of this patent application are included in the scope of this patent application.

Claims

1. A landslide rupture point collaborative positioning and monitoring device, comprising an above-ground monitoring module (1), an underground monitoring module (2), and a data acquisition unit, wherein the above-ground monitoring module (1) is installed above the ground surface of the monitoring point, and the underground monitoring module (2) is buried below the ground surface of the monitoring point; characterized in that: The monitoring point is provided with a pile foundation (3), the lower end of the pile foundation (3) is inserted into the ground and connected to the underground monitoring module (2), and the upper end of the pile foundation (3) is connected to the ground monitoring module (1); the ground monitoring module (1) is used to monitor the ambient temperature, humidity and precipitation data at the monitoring point, and the underground monitoring module (2) is used to monitor the crustal displacement and vibration data below the monitoring point.

2. The landslide rupture point collaborative positioning and monitoring device according to claim 1, characterized in that: The above-ground monitoring module (1) includes a main control box (11), an environmental measurement unit (12), and a monitoring probe (111). The environmental measurement unit (12) is installed inside the main control box (11) and includes a temperature monitoring sensor (112), a humidity monitoring sensor (113), and a precipitation monitoring sensor (114). The main control box (11) is fixedly connected to the upper end of the pile foundation (3), and the monitoring probe (111) is connected to the main control box (11) through a bracket (115) and suspended on the outside of the main control box (11).

3. The landslide rupture point collaborative positioning and monitoring device according to claim 2, characterized in that: The underground monitoring module (2) includes a pre-buried pipe (21), an inclinometer (22), and a microseismic monitoring device (23). The pre-buried pipe (21) is buried below the ground surface at the monitoring point. Two guide grooves (211) are opened on the inner wall of the pre-buried pipe (21). The guide grooves (211) are opened along the length of the pre-buried pipe (21). The inclinometer (22) is equipped with two probes (221). The two probes (221) are paired up and spaced apart from each other. Rollers (222) are provided at both ends of the probes (221). The rollers (222) and the guide grooves (211) form a sliding connection, so that the inclinometer (22) can move up and down along the pre-buried pipe (21). The microseismic monitoring device (23) is located below the inclinometer (22) and is fixedly connected to the pre-buried pipe (21).

4. The landslide rupture point collaborative positioning and monitoring device according to claim 3, characterized in that: The micro-vibration monitoring device (23) includes a fixed housing (231), a vibration sensor (232), a fixed airbag (234), and an inflation device (235). The fixed airbag (234) is arranged around the fixed housing (231). The inflation device (235) is connected to the fixed airbag (234) through a hose (236). After the fixed airbag (234) is inflated, it fills the space between the fixed housing (231) and the pre-embedded pipe (21), so that the fixed housing (231) is fixedly installed in the pre-embedded pipe (21). The vibration sensor (232) is fixedly installed in the fixed housing (231). The lower end of the fixed housing (231) is provided with a resonant head (237) through a connecting rod.

5. The landslide rupture point collaborative positioning and monitoring device according to claim 4, characterized in that: The pile foundation (3) is provided with a winding device (31), and the cable (32) on the winding device (31) is connected to the upper end of the inclinometer (22). The lower end of the inclinometer (22) is provided with a counterweight (24).

6. The landslide rupture point collaborative positioning and monitoring device according to claim 5, characterized in that: The microseismic monitoring device (23) is equipped with an electromagnet (25) that is paired with the counterweight (24), and a cable (32) is connected between the inclinometer (22) and the microseismic monitoring device (23).

7. The landslide rupture point collaborative positioning and monitoring device according to any one of claims 2-6, characterized in that: The pile foundation (3) is provided with a solar panel (33) and a storage battery. The solar panel (33) is connected to the pile foundation (3) through an angle adjustment device (34). The solar panel (33) is connected to the storage battery through a line. The storage battery supplies power to the environmental measurement unit (12), monitoring probe (111), inclinometer (22), vibration sensor (232), winding device (31) and electromagnet (25).

8. The landslide rupture point collaborative positioning and monitoring device according to claim 7, characterized in that: It also includes a data acquisition module, which is set in the main control box (11). The energy storage battery powers the data acquisition module. The data acquisition module collects data from the line-based environmental measurement unit (12), monitoring probe (111), inclinometer (22), and vibration sensor (232). The data acquisition module is equipped with a communication unit.

9. A method for collaborative location monitoring of landslide rupture points, comprising the following steps: S1. Within the monitoring area, select six monitoring points at different altitudes, drill holes at the monitoring points and install the landslide rupture point collaborative positioning monitoring device as described in claim 1, and connect the six sets of the landslide rupture point collaborative positioning monitoring devices to the background server to form a three-dimensional monitoring network. S2. The data acquisition module collects data from the environmental measurement unit (12), monitoring probe (111), inclinometer (22), and vibration sensor (232), and sends it to the back-end server through the communication module to realize the linkage analysis of three-dimensional data. S3. In the three-dimensional coordinate system within the monitoring area, the coordinates of the landslide initiation point are D(x, y, z), and the coordinates of the vibration sensor are Ai(xi, yi, zi), i=1, 2, 3, 4, 5, 6. Then, the governing equation expression for the landslide initiation point coordinates D(x, y, z) is: Equation (1): Equation (2): Equation (3): Equation (4): Equation (5): Equation (6): in, t0 is the travel time between the landslide initiation point and the nearest vibration sensor. The time delay between this vibration sensor and other vibration sensors is t12, t13, t14, t15, and t16. v is the average wave velocity of the P-wave. Expressions (1)...(6) are six spherical equations, with the centers of the spheres corresponding to the coordinates of the six vibration sensors. … ), ( … () … ); S4, In step S3, expression (1) intersects with expression (2…6) to form a circular surface. … The landslide starting point D is located on a circular surface ( … On the circular surface () … The expression for ) is: S5. Calculate the coordinates D(x, y, z) of the landslide starting point according to step S4. Based on the location of the landslide starting point D on the sliding zone, the landslide can be classified into traction landslide, push landslide and composite landslide. S6. Locate the accurate coordinates of the landslide initiation point, calculate the remaining thrust corresponding to the sliding at that point, and analyze the impact of the sliding at that point on the entire landslide body based on the relationship between the remaining thrust and the safety factor, so as to provide theoretical basis and data support for subsequent prevention and control work.