Automatic detection device suitable for geological disaster prevention and control

Abstract

The invention discloses an automatic detection device suitable for geological disaster prevention and control, and belongs to the technical field of geological disaster prevention and control. Comprising a wire guide device, two automatic detection devices and a wire guide unit, each automatic detection device comprises a detection bin seat, and a crack monitoring unit and a pressure triggering unit are fixed to the inner side of each detection bin seat; the pressure triggering unit comprises a pipe seat, a convex guide seat is fixedly embedded in the end of the pipe seat, a first pull rod is fixed to the center of the outer end of the convex guide seat, a second pull rod movably penetrates through the center of the end, away from the first pull rod, of the pipe seat, the second pull rod and the convex guide seat are movably embedded, and a stress disc is fixed to the second pull rod. According to the automatic detection device suitable for geological disaster prevention and control, a whole crack, a local crack and a secondary crack can be synchronously monitored, and accumulated errors of long-term crack monitoring can be eliminated.

Description

Technical Field

[0001] The present invention specifically relates to an automatic detection device applicable to geological disaster prevention and control, belonging to the technical field of geological disaster prevention and control. Background Art

[0002] At present, the existing geological disaster monitoring methods are relatively traditional, mainly including: (1) single-point GNSS displacement monitoring stations for monitoring. Its advantage is that the data accuracy is very high, but the overall monitoring of the disaster body is lacking; (2) InSAR (Interferometric Synthetic Aperture Radar) monitoring of the disaster body area. Its advantage is that it can monitor geological disasters as a whole. However, since InSAR obtains data by emitting lasers from satellites to the earth's surface, the long-distance detection results in low data accuracy. At the same time, it cannot obtain real ground elevation data and thus cannot meet the requirements of deformation monitoring. For this reason, Chinese Patent Publication No.: CN119714107A discloses a method for monitoring geological disaster deformation based on airborne lidar. The real surface point cloud data of the target area at different times is processed as follows: generalization processing; a point cloud elevation difference algorithm based on plane fitting and spatial fitting, and the change situation of the real surface point cloud data of the target area at different times is calculated in chronological order; according to the change situation of the real surface point cloud data of the target area at different times, the deformation area of the target area at different times is finally obtained. However, this structure cannot continuously monitor a certain area, and it is necessary to monitor the change situation according to the real surface point cloud data of the target area at different times. When there is a monitoring error in a certain period, it will lead to the distortion of the entire monitoring result; and when monitoring the area, it requires a large amount of hardware costs. Summary of the Invention

[0003] To solve the above problems, the present invention proposes an automatic detection device applicable to geological disaster prevention and control, which can synchronously monitor the entire crack, local crack and secondary crack, and can eliminate the accumulated error of long-term crack monitoring.

[0004] The automatic detection device applicable to geological disaster prevention and control of the present invention includes: A wire guiding device, the wire guiding device includes a first wire guiding device group and a second wire guiding device group, and the first wire guiding device group and the second wire guiding device group are respectively fixed on both sides of the monitored crack; both the first wire guiding device group and the second wire guiding device group include two corner wire guiding devices buried and fixed on the ground at intervals, and a plurality of straight wire guiding devices are buried and fixed between the two corner wire guiding devices; Automatic detection device, there are two of the automatic detection devices, the automatic detection device includes a detection bin base, and a crack monitoring unit and a pressure trigger unit are fixed inside the detection bin base; the pressure trigger unit includes a pipe base, a convex guide base is fitted and fixed at the end of the pipe base, a first pull rod is fixed at the center of the outer end of the convex guide base, a second pull rod passes through the center of the end of the pipe base away from the first pull rod, the second pull rod is movably fitted with the convex guide base, a force receiving disc is fixed on the second pull rod, and a pressure transmitter is fixed at the end of the force receiving disc away from the convex guide base; third pull rods are fixed on both sides of the detection end of the crack monitoring unit, and the first to third pull rods all slide out of the detection bin base and are fixed to the pull seat; and are fixed to the pull seat; protective covers are fitted and fixed at both ends of the detection bin base; a first guide wire tube is fixed at the center of the protective cover; Wire guiding unit, there are two wire guides in the wire guiding unit, and the two wire guides respectively pass through the first wire guide group and the second wire guide group; one ends of the two wire guides are respectively fixed to the two pull seats of one automatic detection device, and the other ends of the two wire guides are respectively fixed to the two pull seats of the other automatic detection device; During detection, the entire wire guide is tensioned by the first wire guide group and the second wire guide group, so that the wire guide can transfer the tilting force more accurately; when the entire crack expands, the second wire guide group performs an overall action, and the tilting force can be quickly transferred to the automatic detection device through the wire guide. When the crack expands locally or secondary cracks occur, the second wire guide group close to the locally expanded crack or secondary crack acts, that is, the corner wire guide and part of the straight wire guides on that side are tilted, and the wire guide transfers the tilting force to the automatic detection device far from the locally expanded crack or secondary crack, and the automatic detection device quickly detects the tilting force; During the detection by the automatic detection device, the guide wire transmits the tilting force to the pulling seat through the angled guide wire device and the linear guide wire device, and the pulling seat transmits the pulling force to the second pull rod and the third pull rod; at this time, the second pull rod is pulled, synchronously driving the force-receiving disc to perform a linear slide. The force-receiving disc is pressed against the inner wall end of the pipe seat, and the pressure transmitter quickly detects the pressure change. At this time, the pressure transmitter sends a signal to the crack monitoring unit through the controller. The crack monitoring unit can monitor the deformation amount and quickly convert the deformation amount into a crack value. Within the unit time range, when the crack value reaches the set value, an alarm is triggered; otherwise, continuous monitoring is carried out. When the crack monitoring unit and the pressure transmitter do not detect a change value within the set time range, the controller records the current value monitored by the crack monitoring unit. At the same time, the controller sets the standby signal of the crack monitoring unit until it is triggered again next time; when the crack monitoring unit is triggered again, it first monitors the current displacement amount. Whether the current displacement amount reaches the limit value. If it reaches, an alarm is directly triggered. If it does not reach, the accumulated amount is calculated, that is, the difference between the current displacement amount and the last stored displacement amount is calculated to obtain the accumulated crack. The accumulated crack is divided by the accumulated time to determine that within the unit time range, when the crack value reaches the set value, an alarm is triggered; if it does not reach, the real-time change amount of the crack value is detected until an alarm is triggered or it enters the standby state.

[0005] Further, a guide bearing that is slidably fitted with the first to third pull rods is fixed inside the detection bin seat; the first to third pull rods all pass through the detection bin seat movably; the first to third pull rods can be linearly slidably guided through the guide bearing.

[0006] Further, the crack monitoring unit is a grating ruler or a magnetostrictive displacement sensor; the two third pull rods are fixed at both ends of the detection head of the grating ruler or fixed at both ends of the magnetic ring of the magnetostrictive displacement sensor; during operation, the magnetostrictive displacement sensor accurately measures the displacement through the movement of the magnetic ring on the waveguide, and converts the displacement signal into an electrical signal by using the magnetostrictive effect. The displacement measurement accuracy can reach ±0.05 mm; the grating ruler converts the displacement signal into an electrical signal, and the displacement measurement accuracy can reach ±0.005 mm; realizing the monitoring of the displacement accuracy; the overall position of the crack monitoring unit is fixed, and only the detection end performs a linear action.

[0007] Furthermore, the angle wire guide, straight wire guide and automatic detection device are fixed to the ground through a support and protected by being buried in the soil; the support includes a force-bearing platform, the four ends of the force-bearing platform are fixed with a first anchor rod embedded in the ground, and an embedding tube is fixed to the middle part of the bottom surface of the force-bearing platform; the bottom surface of the embedding tube is embedded with a second anchor rod, and the force-bearing platform is screwed with a countersunk bolt screwed with the second anchor rod; the top surfaces of the four ends of the force-bearing platform are fixed with positioning tubes, and the four ends of the angle wire guide, straight wire guide and detection chamber seat are screwed with long bolts and locking bolts; the long bolts are movably embedded with the positioning tubes, and the locking bolts Screw it with the force-bearing platform; during installation, first knock the second anchor rod deep into the soil, then align the engaging tube of the force-bearing platform with the second anchor rod, and at the same time, knock the force-bearing platform to make the first anchor rod engage with the soil, and finally, fasten the force-bearing platform and the second anchor rod through countersunk bolts; complete the installation of the support platform; in order to keep the guide wire running smoothly, first adjust the bottom support height of the angle wire guide, the linear wire guide and the automatic detection device through the long bolts, after the long bolts complete the height adjustment, movably engage the long bolts with the positioning tube, and fix the angle wire guide, the linear wire guide and the automatic detection device to the top surface of the force-bearing platform through the locking bolts.

[0008] Furthermore, a soil moisture sensor or a groundwater level sensor is fixed at the bottom of the second anchor rod; a vertical pole is screwed onto the automatic detection device, and the top of the vertical pole protrudes from the ground surface; a top bin is fixed to the top of the vertical pole through a flange, and a battery and a controller for controlling the whole machine are fixed on the inner side of the top bin; a waterproof charging head is provided at the bottom of the top bin; a wind transmitter and a rainfall transmitter are fixed on the top bin; during installation, the guide wire device, the automatic detection device and the guide wire unit are installed first, and then buried with soil. After burying, the vertical pole is always protruded from the outside of the soil. Then, the top bin is fixed to the top of the vertical pole by bolts. At this time, the top bin is set outside the soil to facilitate charging of the battery. At the same time, the top bin serves as a support for the wind transmitter and the rainfall transmitter. The controller can collect the collected soil moisture, groundwater level, wind force level and rainfall values, and perform threshold judgment. When the critical value is reached, the controller can trigger the automatic detection device to monitor the cracks in real time.

[0009] Furthermore, outer protective tubes are sleeved between the linear wire guides, between the linear wire guide and the angle wire guide, and between the angle wire guide and the automatic detection device; the outer protective tubes are buried inside the ground; the guide wire moves through the outer protective tubes; during installation, a groove is first made on the surface of the ground, and the guide wire device, the automatic detection device, the guide wire unit and the outer protective tube are all installed in the groove, then the guide wire is tensioned, and after the tensioning is completed, the groove is filled with soil samples; at this time, the outer protective tube, the guide wire device and the guide wire unit form a movement space, and the outer protective tube can protect the guide wire, so that the guide wire can move freely axially in the outer protective tube.

[0010] Furthermore, the second wire guide group is installed on the side close to the mountain body; both ends of the wire are movably passed through the second wire guide group and then fixed to the spring body, and the spring body is fixed to the detection end of the crack monitoring unit; the first wire guide group is fixed on the landslide side of the crack, and the second wire guide group is fixed on the stable mountain body side; when there is a fluctuation on the landslide side, the first wire guide group can quickly transfer the tilting force to the detection end of the crack monitoring unit through the wire, and the other side of the detection end of the crack monitoring unit is elastically limited by the spring body, so that both wires are in a tensioned state, thereby enabling the monitoring of the entire crack or local cracks.

[0011] Furthermore, both the corner wire guide and the linear wire guide include a wheel chamber, and a V-shaped pair of wheels are rotatably installed inside the wheel chamber through bearings; the wire is movably installed with the pair of wheels; the pair of wheels can perform radial limit and guiding sliding guidance on the wire, and the pair of wheels can support the wire; when the entire crack or local crack of the mountain body expands, the wire can quickly transfer the tilting force of the first wire guide group to the automatic detection device, so that it can be quickly detected by the automatic detection device.

[0012] Furthermore, the process of obtaining the crack is as follows: the mountain body structure is obtained through the LiDAR system. When a crack appears in the mountain body structure and reaches the set width and set length, this crack is used as the detection object; specifically: the LiDAR system is carried by a drone, and the LiDAR system penetrates the vegetation to complete the terrain scanning and generate a three-dimensional real scene model with an accuracy of 400 laser point clouds per square meter, accurately identifying potential hazards such as cracks and landslide bodies. The LiAR system calculates the distance through the laser pulse reflection time, combines with GPS positioning and inertial measurement unit to compensate for the motion error to achieve high-precision terrain modeling; the LiDAR system obtains the LiDAR point cloud data, removes the vegetation interference from the LiDAR point cloud data, generates a digital elevation model (DEM) and a mountain shadow image map, extracts the characteristic terrain, obtains the cracks and landslide bodies, and after determining the width and length of the cracks, this crack is used as the detection object.

[0013] Furthermore, the controller real-time monitors multiple detection data such as the soil humidity value, the groundwater level value, the wind force level, and the rainfall level; when one of the detection data reaches the first trigger value, or two or more detection data reach the second trigger value, the controller triggers the crack monitoring unit to perform a monitoring action, so as to real-time monitor whether the current crack has changed through the crack monitoring unit. When the crack value reaches the set value within the set time, an alarm signal is issued; when the values of the soil humidity value, the groundwater level value, the wind force level, and the rainfall level reach the limit value, an alarm signal is directly issued, where the second trigger value is less than the first trigger value.

[0014] Compared with the prior art, the automated detection device for geological disaster prevention and control of the present invention uses a wire guiding device and an automatic detection device in cooperation, and can synchronously monitor the entire crack, local crack and secondary crack, avoiding problems such as the continuous working state of the crack monitoring unit, resulting in the rapid aging of the detection head, the reduction of sensitivity, the decline of monitoring ability and even failure; it can eliminate the cumulative error of long-term crack monitoring, and at the same time, can greatly improve the battery life of the detection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 FIG. is a schematic diagram of the overall structure of the automated detection device for geological disaster prevention and control of the present invention.

[0016] Figure 2 FIG. is a schematic diagram of the support platform structure of the present invention.

[0017] Figure 3 FIG. is a schematic diagram of the installation structure of the support platform and the automatic detection device of the present invention.

[0018] Figure 4 FIG. is a schematic diagram of the structure of the support platform, the automatic detection device and the protective cover of the present invention.

[0019] Figure 5 FIG. is a schematic diagram of the overall structure of the pressure trigger unit of the present invention.

[0020] Figure 6 FIG. is a schematic diagram of the installation structure of the support platform and the linear wire guide of the present invention.

[0021] Figure 7 FIG. is a schematic diagram of the installation structure of the support platform and the corner wire guide of the present invention.

[0022] Figure 8 FIG. is a schematic diagram of the structure of the pair of wheels and the wire guide cooperation of the present invention.

[0023] Figure 9 FIG. is a schematic diagram of the overall structure of the automatic detection device of Embodiment 2 of the present invention.

[0024] Reference numerals: 1. First wire guide group, 2. Second wire guide group, 3. Monitoring crack, 4. Corner wire guide, 5. Linear wire guide, 6. Detection bin seat, 7. Crack monitoring unit, 8. Pipe seat, 9. Convex guide seat, 10. First pull rod, 11. Second pull rod, 12. Force receiving disc, 13. Pressure transmitter, 14. Third pull rod, 15. Pull seat, 16. Protective cover, 17. First wire guide tube, 18. Wire guide, 19. Force receiving platform, 20. First anchor bolt, 21. Fitting tube, 22. Second anchor bolt, 23. Countersunk bolt, 24. Positioning tube, 25. Long strip bolt, 26. Locking bolt, 27. Vertical rod, 28. Top bin, 29. Rainfall transmitter, 30. Outer protection tube, 31. Pair of wheels, 32. Wind force transmitter. DETAILED DESCRIPTION OF THE INVENTION

[0025] Example 1: As Figures 1 to 8 shown, an automated detection device applicable to geological disaster prevention and control includes: A wire guiding device, which includes a first wire guiding device group 1 and a second wire guiding device group 2. The first wire guiding device group 1 and the second wire guiding device group 2 are respectively fixed on both sides of the monitoring crack 3. Both the first wire guiding device group 1 and the second wire guiding device group 2 include two corner wire guiding devices 4 buried and fixed at intervals on the ground, and between the two corner wire guiding devices 4, a plurality of linear wire guiding devices 5 are buried and fixed; Two automated detection devices, each of which includes a detection bin base 6, and a crack monitoring unit 7 and a pressure trigger unit are fixed inside the detection bin base 6. The pressure trigger unit includes a pipe base 8, a convex guide base 9 is fitted and fixed at the end of the pipe base 8, a first pull rod 10 is fixed at the center of the outer end of the convex guide base 9, a second pull rod 11 passes through the center of the end of the pipe base 8 far from the first pull rod 10, the second pull rod 11 is movably fitted with the convex guide base 9, a force receiving disc 12 is fixed on the second pull rod 11, and a pressure transmitter 13 is fixed at one end of the force receiving disc 12 far from the convex guide base 9. Third pull rods 14 are fixed on both sides of the detection end of the crack monitoring unit 7. The first pull rod 10 to the third pull rod 14 all slide out of the detection bin base 6 and are fixed to a pull seat 15. Covers 16 are fitted and fixed at both ends of the detection bin base 6. A first wire guiding pipe 17 is fixed at the center of the cover 16; A wire guiding unit, which has two wires 18, and the two wires 18 respectively pass through the first wire guiding device group 1 and the second wire guiding device group 2. One ends of the two wires 18 are respectively fixed to the two pull seats 15 of one automated detection device, and the other ends of the two wires 18 are respectively fixed to the two pull seats 15 of the other automated detection device; During detection, the entire wire 18 is tensioned by the first wire guiding device group 1 and the second wire guiding device group 2, so that the wire 18 can transfer the tilting force more precisely. When the entire crack expands, the second wire guiding device group 2 makes an overall movement, and the tilting force can be quickly transferred to the automated detection device through the wire 18. When the crack expands locally, or a secondary crack occurs, the second wire guiding device group 2 near the locally expanded crack or the secondary crack moves, that is, the corner wire guiding device 4 and some of the linear wire guiding devices 5 near this side are tilted, and the wire 18 transfers the tilting force to the automated detection device far from the locally expanded crack or the secondary crack, and the automated detection device quickly detects the tilting force; When the automatic detection device is detecting, the guide wire 18 transmits the tilting force to the pulling seat 15 through the angled guide wire device 4 and the linear guide wire device 5, and the pulling seat 15 transmits the pulling force to the second pull rod 11 and the third pull rod 14; at this time, the second pull rod 11 is pulled, synchronously driving the force receiving disc 12 to perform linear sliding. The force receiving disc 12 is pressed against the inner wall end of the pipe seat 8, and the pressure transmitter 13 quickly detects the pressure change. At this time, the pressure transmitter 13 sends a signal to the crack monitoring unit 7 through the controller. The crack monitoring unit 7 can monitor the deformation amount and quickly convert the deformation amount into a crack value. Within the unit time range, when the crack value reaches the set value, an alarm is triggered; otherwise, continuous monitoring is carried out. When the crack monitoring unit 7 and the pressure transmitter 13 do not detect a change value within the set time range, the controller records the current value monitored by the crack monitoring unit 7. At the same time, the controller sets the standby signal of the crack monitoring unit 7 until it is triggered again next time; when the crack monitoring unit 7 is triggered again, it first monitors the current displacement amount to see if the current displacement amount reaches the limit value. If it reaches, an alarm is directly triggered. If it does not reach, the accumulated amount is calculated, that is, the difference between the current displacement amount and the last stored displacement amount is calculated to obtain the accumulated crack. The accumulated crack is divided by the accumulated time to determine whether the crack value reaches the set value within the unit time range. If it reaches, an alarm is triggered; if it does not reach, the real-time change amount of the crack value is detected until an alarm is triggered or it enters the standby state.

[0026] A guide bearing that is slidably fitted with the first pull rod 10 to the third pull rod 14 is fixed inside the detection bin seat 6; the first pull rod 10 to the third pull rod 14 all pass through the detection bin seat 6 movably; the first pull rod 10 to the third pull rod 14 can perform linear sliding guidance through the guide bearing.

[0027] The crack monitoring unit 7 is a grating scale or a magnetostrictive displacement sensor; the two third pull rods 14 are fixed at both ends of the detection head of the grating scale or fixed at both ends of the magnetic ring of the magnetostrictive displacement sensor; during operation, the magnetostrictive displacement sensor accurately measures the displacement through the movement of the magnetic ring on the waveguide, and converts the displacement signal into an electrical signal by using the magnetostrictive effect. The displacement measurement accuracy can reach ±0.05 mm; the grating scale converts the displacement signal into an electrical signal, and the displacement measurement accuracy can reach ±0.005 mm; realizing the monitoring of displacement accuracy; the overall position of the crack monitoring unit 7 is fixed, and only the detection end performs linear motion.

[0028] The corner wire guide 4, the linear wire guide 5 and the automatic detection device are fixed to the ground by a support platform and protected by burying them in the soil. The support platform includes a stress platform 19. At the four ends of the stress platform 19, first anchor rods 20 that fit with the ground are fixed. In the middle of the bottom surface of the stress platform 19, a fitting pipe 21 is fixed. A second anchor rod 22 is fitted into the bottom surface of the fitting pipe 21. A countersunk bolt 23 that is screwed with the second anchor rod 22 is screwed onto the stress platform 19. At the top surfaces of the four ends of the stress platform 19, positioning pipes 24 are fixed. Long bolts 25 and locking bolts 26 are screwed onto the four ends of the corner wire guide 4, the linear wire guide 5 and the detection chamber base 6. The long bolt 25 is movably fitted with the positioning pipe 24, and the locking bolt 26 is screwed with the stress platform 19. During installation, first, knock the second anchor rod 22 deep into the soil. Then, align the fitting pipe 21 of the stress platform 19 with the second anchor rod 22. At the same time, strike the stress platform 19 to make the first anchor rod 20 fit with the soil. Finally, fasten the stress platform 19 and the second anchor rod 22 with the countersunk bolt 23 to complete the installation of the support platform. To keep the wire 18 running smoothly, first, the bottom support height of the corner wire guide 4, the linear wire guide 5 and the automatic detection device can be adjusted through the long bolt 25. After the long bolt 25 completes the height adjustment, the long bolt 25 is movably fitted with the positioning pipe 24, and the corner wire guide 4, the linear wire guide 5 and the automatic detection device are fixed to the top surface of the stress platform 19 through the locking bolt 26.

[0029] Embodiment 2: As Figure 9 shown, a soil humidity sensor or an underground water level sensor is fixed to the bottom of the second anchor rod 22. A vertical rod 27 is screwed onto the automatic detection device, and the top of the vertical rod 27 protrudes above the ground surface. At the top of the vertical rod 27, a top chamber 28 is fixed through a flange. Inside the top chamber 28, a storage battery and a controller for overall machine control are fixed. A waterproof charging head is arranged at the bottom of the top chamber 28. A wind power transmitter 32 and a rain gauge transmitter 29 are fixed to the top chamber 28. During installation, first, complete the installation of the wire guiding device, the automatic detection device and the wire guiding unit, and bury them with soil. After burial, make the vertical rod 27 always protrude outside the soil. Then, fix the top chamber 28 to the top of the vertical rod 27 through bolts. At this time, the top chamber 28 is arranged outside the soil, which is convenient for charging the storage battery. At the same time, the top chamber 28 serves as a support for the wind power transmitter 32 and the rain gauge transmitter 29. The controller can collect the soil humidity, underground water level, wind power level and rainfall values and perform threshold determination. When the critical value is reached, the controller can trigger the automatic detection device to monitor the cracks in real time.

[0030] Between the straight wire guides 5, between the straight wire guide 5 and the angled wire guide 4, and between the angled wire guide 4 and the automatic detection device, an outer protective tube 30 is sleeved; the outer protective tube 30 is buried inside the ground; the wire 18 movably passes through the outer protective tube 30; during installation, first, a groove is dug on the ground surface, and the wire guiding device, the automatic detection device, the wire guiding unit, and the outer protective tube 30 are all installed in the groove. Then, the wire 18 is tensioned. After the tensioning is completed, the groove is filled with soil samples; at this time, the outer protective tube 30, the wire guiding device, and the wire guiding unit form a movement space, and the outer sheath can protect the wire 18, enabling the wire 18 to freely axially move inside the outer protective tube 30.

[0031] The second wire guide group 2 is installed on the side close to the mountain; both ends of the wire movably pass through the second wire guide group 2 and are then fixed to the spring body, and the spring body is fixed to the detection end of the crack monitoring unit 7; the first wire guide group 1 is fixed on the side of the crack landslide, and the second wire guide group 2 is fixed on the side of the stable mountain; when there is a fluctuation on the landslide side, the first wire guide group 1 can quickly transmit the tilting force to the detection end of the crack monitoring unit 7 through the wire 18, and the other side of the detection end of the crack monitoring unit 7 is elastically limited by the spring body, so that both wires 18 are in a tensioned state, thereby enabling the monitoring of the entire crack or local cracks.

[0032] Both the angled wire guide 4 and the straight wire guide 5 include a wheel chamber, and a V-shaped pair of wheels 31 are rotatably installed inside the wheel chamber through bearings; the wire 18 is movably installed with the pair of wheels 31; the pair of wheels 31 can radially limit and guide the sliding of the wire 18, and the pair of wheels 31 can support the wire 18; when the entire crack or local crack of the mountain expands, the wire 18 can quickly transmit the tilting force of the first wire guide group 1 to the automatic detection device, so that it can be quickly detected by the automatic detection device.

[0033] The process of obtaining the crack is as follows: The mountain structure is obtained through the LiDAR system. When a crack appears in the mountain structure and reaches the set width and set length, this crack is taken as the detection object. Specifically, the LiDAR system is carried by a drone to penetrate the vegetation, complete the terrain scanning, and generate a three-dimensional real-scene model with an accuracy of 400 laser point clouds per square meter, accurately identifying potential hazards such as cracks and landslides. The LiAR system calculates the distance through the laser pulse reflection time, combines with GPS positioning and inertial measurement unit to compensate for the motion error, and realizes high-precision terrain modeling. The LiDAR system obtains LiDAR point cloud data, removes the vegetation interference from the LiDAR point cloud data, generates a digital elevation model (DEM) and a mountain shadow image map, extracts the characteristic terrain, and obtains cracks and landslides. For example, a 50m-long crack was found through the LiDAR system's CT scan of Qingping Town, Mianzhu City. Then, this crack can be continuously detected. And according to the width and length of the crack, this crack is taken as the object to be detected.

[0034] The controller continuously monitors multiple detection data such as the soil humidity value, the groundwater level value, the wind force level, and the rainfall level. When one of the detection data reaches the first trigger value, such as the displacement rate ≥ 5mm / day, the rainfall exceeds the critical value, etc.; and when two or more detection data reach the second trigger value, the controller triggers the crack monitoring unit 7 to perform a monitoring action, so as to continuously monitor whether the current crack has changed through the crack monitoring unit 7. When the crack value reaches the set value within the set time, an alarm signal is sent. When the numerical values of the soil humidity value, the groundwater level value, the wind force level, and the rainfall level reach the limit value, an alarm signal is directly sent. Among them, the second trigger value is less than the first trigger value. When the automated detection device of the present invention is applied to a simulated landslide experiment, the crack monitoring unit 7 uses a magnetostrictive displacement sensor, with an enclosed length of 1.5m and an enclosed width of 0.8m. The pressure transmitter 13 can capture 100% of the pressure change, and the action time for triggering the crack monitoring unit 7 is 15us. The device successfully captures the slope deformation displacement, with a maximum error of 0.03mm. The data transmission delay is less than 0.5s, and the data processing time is less than 3 seconds. When the monitoring data exceeds the preset threshold, the device automatically triggers an early warning broadcast and notifies relevant personnel by means of text messages, APPs, etc., and the early warning response time is less than 1 second.

[0035] The above embodiments are only the preferred embodiments of the present invention. Therefore, all equivalent changes or modifications made according to the structure, characteristics, and principles described in the scope of the present invention application are included in the scope of the present invention application.

Claims

1. An automated detection device applicable to geological disaster prevention and control, characterized in that: include: A wire guide device, the wire guide device comprising a first wire guide group and a second wire guide group, the first wire guide group and the second wire guide group are respectively fixed on both sides of the monitored crack; the first wire guide group and the second wire guide group each comprise two corner wire guides that are buried and fixed to the ground at intervals, and a plurality of straight wire guides are buried and fixed between the two corner wire guides; An automatic detection device, wherein two automatic detection devices are provided, and the automatic detection device comprises a detection chamber seat, and a crack monitoring unit and a pressure triggering unit are fixed on the inner side of the detection chamber seat; the pressure triggering unit comprises a pipe seat, and a convex guide seat is embedded and fixed at the end of the pipe seat, and a first pull rod is fixed at the center of the outer end of the convex guide seat, and a second pull rod is movably passed through the center of one end of the pipe seat away from the first pull rod, and the second pull rod is movably embedded with the convex guide seat, and a force disk is fixed on the second pull rod, and a pressure transmitter is fixed on the end of the force disk away from the convex guide seat; third pull rods are fixed on both sides of the detection end of the crack monitoring unit, and the first to third pull rods are fixed to the pull seat; A wire guide unit is provided with two wire guides, and the two wire guides respectively pass through a first wire guide group and a second wire guide group; one end of the two wire guides is respectively fixed to two pull seats of an automatic detection device, and the other ends of the two wire guides are respectively fixed to two pull seats of another automatic detection device.

2. The automated detection device applicable to geological disaster prevention and control according to claim 1, characterized in that: Protective covers are embedded and fixed at both ends of the detection chamber seat; a first wire guide tube is fixed at the center of the protective cover; a guide bearing that is slidably embedded with the first to third pull rods is fixed on the inner side of the detection chamber seat; the first to third pull rods are all movable to pass through the detection chamber seat.

3. The automated detection device applicable to geological disaster prevention and control according to claim 1, characterized in that: The crack monitoring unit is a grating ruler or a magnetostrictive displacement sensor; the two third pull rods are fixed to the two ends of the detection head of the grating ruler or to the two ends of the magnetic ring of the magnetostrictive displacement sensor.

4. The automated detection device applicable to geological disaster prevention and control according to claim 1, characterized in that: The angle wire guide, straight wire guide and automatic detection device are fixed to the ground through a support platform and protected by being buried in the soil; the support platform includes a force-bearing platform, the four ends of the force-bearing platform are fixed with a first anchor rod embedded in the ground, and an embedding tube is fixed to the middle part of the bottom surface of the force-bearing platform; the bottom surface of the embedding tube is embedded with a second anchor rod, and the force-bearing platform is screwed with a countersunk bolt screwed with the second anchor rod; positioning tubes are fixed to the top surfaces of the four ends of the force-bearing platform, and the four ends of the angle wire guide, straight wire guide and detection chamber seat are screwed with long bolts and locking bolts; the long bolts are movably embedded with the positioning tubes, and the locking bolts are screwed with the force-bearing platform.

5. The automated detection device applicable to geological disaster prevention and control according to claim 4, characterized in that: A soil moisture sensor or a groundwater level sensor is fixed to the bottom of the second anchor rod; a vertical pole is screwed on the automatic detection device, and the top of the vertical pole protrudes out of the ground; a top bin is fixed to the top of the vertical pole through a flange, and a battery and a controller for controlling the entire machine are fixed on the inside of the top bin; a waterproof charging head is provided at the bottom of the top bin; a wind transmitter and a rainfall transmitter are fixed on the top bin.

6. The automated detection device applicable to geological disaster prevention and control according to claim 1, characterized in that: An outer protective tube is sleeved between the linear wire guides, between the linear wire guide and the angle wire guide, and between the angle wire guide and the automatic detection device; the outer protective tube is buried inside the ground; and the guide wire moves through the outer protective tube.

7. The automated detection device applicable to geological disaster prevention and control according to claim 1, characterized in that: The second wire guide group is installed on the side close to the mountain body; both ends of the wire are movably passed through the second wire guide group and then fixed to the spring body, and the spring body is fixed to the detection end of the crack monitoring unit.

8. The automated detection device applicable to geological disaster prevention and control according to claim 1, characterized in that: Both the corner wire guide and the linear wire guide include a wheel bin, and a V-shaped pair of wheels are rotatably installed inside the wheel bin through bearings; the wire is movably installed with the pair of wheels.

9. The automated detection device applicable to geological disaster prevention and control according to claim 1, characterized in that: The process of obtaining cracks is as follows: the mountain body structure is obtained through the LiDAR system. When a crack appears in the mountain body structure and reaches the set width and set length, this crack is used as the detection object.

10. The automated detection device applicable to geological disaster prevention and control according to claim 5, wherein: The controller monitors multiple detection data of the soil humidity value, the groundwater level value, the wind force level, and the rainfall level in real time; when one of the detection data reaches the first trigger value, and two or more detection data reach the second trigger value, the controller triggers the crack monitoring unit to perform a monitoring action; among them, the second trigger value is less than the first trigger value.

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