Urban road surface collapse early warning detection device and method

Abstract

The invention discloses an urban road surface collapse early warning detection device and method.The urban road surface collapse early warning detection device comprises a movable base, an operation room is arranged on the movable base, an operation system is arranged in the operation room, the early warning device further comprises a general survey part and an early warning part, the early warning part comprises a transmitting monitoring probe rod and a receiving embedded part, and the operation system is used for opening and closing the general survey part and receiving information of the general survey part; the operation system starts embedding of the emission monitoring probe rod according to information, the receiving embedded part is embedded manually or mechanically according to the position of the emission monitoring probe rod, and early warning detection is carried out on a risk cavity and the periphery through cooperation of the emission monitoring probe rod and the receiving embedded part. The device solves the problem that manual general survey is low in efficiency and the problem that the detection effect is interfered or the radar is damaged due to the existence of sundries on the ground; and an early warning piece is also provided, so that the risk cavity and surrounding soil can be monitored and early warned, and the human and financial loss caused by major accidents is avoided.

Description

Technical Field

[0001] The invention relates to an urban road ground collapse early warning detection device and method. Background Art

[0002] Road holes refer to spaces or holes that appear below the road surface. This situation may be caused by many reasons, such as poor material quality, wear and tear caused by frequent vehicle traffic, underground water pipe leakage, etc. Road holes pose a serious threat to driving safety because they may cause road surface collapse, resulting in traffic accidents. Road holes are a serious traffic safety hazard that needs to be regularly detected and repaired in a timely manner. In the existing technology, ground penetrating radar is usually used to detect road holes.

[0003] At present, there are cart-type ground-penetrating radars on the market. This type of ground-penetrating radar is mainly moved by manual pushing. However, the manual pushing method is slow, resulting in slow detection and measurement, which affects the efficiency of detecting road holes. And because the transmitter on the ground-penetrating radar is close to the bottom surface, stones and other debris on the ground can easily interfere with the detection effect of the radar and may even damage the radar equipment. Furthermore, the cart-type ground-penetrating radar does not have an early warning function and cannot detect the cavity risk area in real time. Summary of the invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide an urban road ground collapse early warning detection device, which solves the problems of slow efficiency of manual census and interference with detection results or damage to radar due to the presence of debris on the ground; it also provides an early warning component that can monitor and warn of risk cavities and surrounding soil to avoid major accidents that cause loss of life and property.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an urban road ground collapse early warning detection device, comprising a mobile base, an operating room is provided on the mobile base, an operating system is provided in the operating room, and also comprises a census piece and an early warning piece, the early warning piece comprises a transmitting monitoring probe and a receiving embedded piece, the operating system is used to open and close the census piece and receive census piece information, the operating system starts the embedding of the transmitting monitoring probe according to the information, the receiving embedded piece is embedded by manual or mechanical equipment according to the position of the transmitting monitoring probe, and early warning detection of risk voids and surrounding areas is performed through the transmitting monitoring probe itself and in cooperation with the receiving embedded piece.

[0006] Furthermore, the survey unit includes a lifting platform installed at the front end of a mobile base, and the end surface of the lifting platform facing the ground is provided with a photo-taking and ranging unit, a ground-penetrating radar module and a cleaning unit, the cleaning unit is used to clean the road surface, and the ground-penetrating radar module is equipped with a hydraulic drive, which drives the ground-penetrating radar module to fit the road surface according to the image information collected by the photo-taking and ranging unit.

[0007] Furthermore, a spray marking part is provided at a position of the mobile base near the lifting platform, and the spray marking part is used to mark the road surface where the risk cavity is located. The spray marking part includes a rotating disk, a slide rail is provided on the rotating disk, and a spray head is connected to the slide rail through a hydraulic telescopic rod. A hollow rod extends from the upper end of the rotating disk and a driven gear is provided at the end of the hollow rod. The driven gear is meshed with a driving gear. The spray head passes through the center of the rotating disk through a pipe, and the hollow rod is connected to a pump body and a spray box, and the spray material is stored in the spray box.

[0008] Furthermore, a placement cavity is provided at the rear of the lower end surface of the lifting platform, the ground penetrating radar module is arranged in the placement cavity, and protective baffles are provided on the front and rear end surfaces of the placement cavity.

[0009] Furthermore, the cleaning part includes left and right driving plates, one ends of which are connected to the lifting platform and are equipped with driving parts to realize the rotation of the left and right driving plates. The lower end surfaces of the left and right driving plates are slidably connected with deformable plates on both sides through connecting rods. A hydraulic telescopic rod is connected between the middle of the deformable plate and the middle of the driving plate. The deformable bottom plate is provided with bristles. The connecting rods on the same driving plate are telescopically and slidably connected with push plates close to the end surface of the other driving plate. When a pit is found in the road section to be inspected ahead, the hydraulic telescopic rod will be activated to change the deformable plate from straight to arc-shaped to varying degrees to adapt to the pit.

[0010] Furthermore, a storage rack and a hydraulic drive system are provided on the mobile base, and a plurality of launch monitoring probes and connecting pipes are provided on the storage rack. The hydraulic drive system is used to align the launch monitoring probes and connecting pipes with the spray mark position and then drill them vertically into the risk cavity.

[0011] Furthermore, the emission monitoring probe includes an outer sleeve and a slidingly connected telescopic monitoring end. The upper end of the outer sleeve is provided with a connecting end connected to a connecting pipe for extending the drilling length. The slidingly connected telescopic monitoring end includes a drill bit. A hollow rod extends vertically from the center of the drill bit. A fixed disk and a movable disk are provided at the upper end of the hollow rod. The fixed disk is provided with a plurality of connecting grooves distributed along the circumference. A rod body is hinged at the connecting grooves. The middle part of the rod body is hinged to the movable disk by a hinged rod. The movable disk is slidingly connected to the hollow rod by a sliding groove. A movable rod connected to the movable disk is provided inside the hollow rod. The rod body is unfolded or retracted by the movable rod driving the movable disk up and down. A plurality of emission sensors and strain force sensors are provided on the rod body.

[0012] Furthermore, the receiving embedded part includes an arc-shaped plate, a cavity is provided inside the arc-shaped plate, a receiver is embedded in the bottom of the arc-shaped plate, the receiver is connected to the power supply component inside the cavity through a pipeline, a waterproof layer is provided on the end surface of the receiver that is in contact with the soil, and through holes are provided on the left and right sides of the cavity of the arc-shaped plate, and a limit rod is passed through the through hole, and the limit rod is used to fix the position of the arc-shaped plate.

[0013] The present application also provides a detection method using an urban road ground collapse early warning detection device, comprising the following steps: Step ①: First, classify the roads according to the soil conditions, service life, traffic flow, and maintenance conditions of urban roads, and inspect different roads in sections and in sequence; Step ②, a census of the cavity situation of the road section is conducted through the census piece in the early warning detection device, and a cavity distribution map of the road section is established through the detected information, and the operating system marks the risk cavity on the ground by spraying the marking piece according to the location of the risk cavity on the ground in the cavity distribution map; Step ③, when all the risk holes in the road section are marked, the early warning detection device drills the transmitting monitoring probe rod into the hole position through the pressing drive system at the corresponding position, and the synchronous staff buries the receiving embedded parts around the circumference of the buried detection probe rod. The distance between the pre-buried receiving embedded parts and the detection probe rod is set according to the number of holes around the risk hole; Step ④, when the installation is completed, start the transmitting monitoring probe, the transmitting monitoring probe emits electromagnetic waves, the receiving embedded parts receive electromagnetic wave signals, and transmit the received electromagnetic waves to the operating system. After the operating system outputs the data, it is presented in real time on the image display, showing the situation of the cavity and the surrounding cavities, including whether there are new cavities and the size changes of the original cavities; Step ⑤: When the development of the cavity exceeds the threshold of the road section, an early warning is issued, and the operation of the road section is suspended and repaired.

[0014] Beneficial effects: 1. This application adopts a combination of census pieces and warning pieces. The census pieces are used to collect information on the distribution of cavities under the road and the degree of risk. Subsequently, it is determined whether to pre-embed warning pieces based on the information. The road section is monitored in real time through the warning pieces, and warnings are issued for road ground collapse to avoid major accidents in the future.

[0015] 2. Distribution of cavities under the surveyed roads In order to prevent the ground penetrating radar module from being damaged by foreign objects, a cleaning unit is provided. The cleaning unit can first clean the required surveyed road section, which may include a flat road surface or a road surface with potholes. The cleaning unit adjusts its shape according to the shape of the road section to better fit the road surface and clean more cleanly.

[0016] 3. The early warning parts include transmitting monitoring probes and receiving embedded parts. The transmitting monitoring probes are buried in the risk voids according to the information collected by the census parts. There are disturbances to the risk voids during the burying process. After stabilization, the telescopic monitoring end is deployed in the risk voids and receiving embedded parts are distributed around the transmitting monitoring probes. Electromagnetic waves are emitted from all directions through the telescopic monitoring end, and the receiving embedded parts receive the electromagnetic waves to monitor the surrounding void status. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the device; Figure 2 It is a schematic diagram of spray marking parts; Figure 3 This is a bottom view of the rotating disk; Figure 4 It is a schematic diagram of the deformation of the cleaning part; Figure 5 Schematic diagram of left and right drive plates; Figure 6 It is a side view of the left and right drive plates; Figure 7 It is a schematic diagram for pre-embedding early warning parts; Figure 8 This is a schematic diagram of the launch monitoring probe; Fig. 9 Expanded top view for launching monitoring probe.

[0018] Figure numerals: 1, mobile base; 2, operating room; 21, operating system; 3, census piece; 31, lifting platform; 32, photo-taking and ranging piece; 33, ground-penetrating radar module; 34, cleaning part; 341, driving plate; 342, deformable plate; 343, bristles; 344, connecting rod; 345, push plate; 4, early warning piece; 41, launch monitoring probe rod; 411, outer sleeve; 412, drill bit; 413, hollow rod; 414, fixed plate; 415, Movable disk; 416, rod body; 417, hinged rod; 418, movable rod; 419, transmitting sensor; 42, receiving embedded part; 421, arc plate; 422, cavity; 423, receiver; 424, through hole; 425, limit rod; 5, spray marking part; 51, rotating disk; 52, driven gear; 53, driving gear; 54, spray box; 55, spray head; 6, hydraulic telescopic rod; 7, hydraulic drive system; 8, storage rack; 9, connecting pipe. DETAILED DESCRIPTION

[0019] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation mode, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0020] Refer to Figure 1-Figure 9As shown, the present application provides a ground collapse warning detection device for urban roads, including a mobile base 1, an operating room 2 is provided on the mobile base 1, an operating system 21 is provided in the operating room 2, and a survey unit 3 and a warning unit 4 are also provided. The survey unit 3 includes a lifting platform 31 installed at the front end of the mobile base 1, and the end surface of the lifting platform 31 facing the ground is provided with a photographing and ranging unit 32, a bottom-penetrating radar module and a cleaning unit 34. The cleaning unit 34 is used to clean the road surface to reduce the damage of the road debris to the ground-penetrating radar module 33 or the influence of the survey results. Due to the presence of potholes on the road surface, it is necessary to focus on the survey of the potholes on the road surface. Therefore, in order to fit the ground-penetrating radar module 33 to the potholes, the ground-penetrating radar module 33 is configured with a hydraulic drive, and the ground-penetrating radar module 33 is brought close to the potholes by the hydraulic drive to obtain more accurate data.

[0021] like Figure 1 , Figure 5 , Figure 6 As shown, before the ground-penetrating radar module 33 starts the survey, the cleaning component cleans the road surface, and moves forward on the road at a certain speed through the mobile base 1. During the moving process, the cleaning component has already cleaned the detection area in advance before the ground-penetrating radar module 33 is started. The cleaning component includes left and right drive plates 341, one end of the left and right drive plates 341 is connected to the lifting platform 31 and is equipped with a drive component, which is driven by a motor. The lower end surfaces of the left and right driving plates 341 are slidably connected to the deformable plates 342 through the connecting rods 344. The connecting rods 344 are provided with cylindrical protrusions on the left and right sides, and the cylindrical protrusions are threaded with anti-slip plates. The deformable plates 342 are provided with arc grooves corresponding to the cylindrical protrusions. The arc grooves are sleeved on the cylindrical protrusions and connected to the anti-slip plates. The deformable plates 342 are restricted by the anti-slip plates. The middle of the deformable plates 342 and the middle of the arc plate 421 are connected with hydraulic telescopic rods 6. The bottom of the deformable plates 342 is provided with bristles 343. The bristles 343 are made of a harder material for easy cleaning. When there is a pit and it is necessary to detect the cavity at the pit, the hydraulic telescopic rod 6 extends downward to form the deformable plate 342 into a certain arc shape so that the bristles 343 better fit the pit, which is convenient for cleaning the debris in the pit.

[0022] Furthermore, in order to avoid the radar module being damaged due to the inability of the bristles 343 to sweep large debris during cleaning on a flat road surface, the connecting rods 344 on the same driving plate 341 are telescopically and slidably connected to the end surface of the other driving plate 341 with a push plate 345, which can push the large debris to both sides.

[0023] like Figure 1 As shown, after cleaning is completed, the ground penetrating radar module 33 is started, and the bottom penetrating radar module is arranged in the placement cavity, and the placement cavity is arranged at the rear position of the lower end surface of the lifting platform 31, and protective baffles are arranged at the front and rear ends of the placement cavity.

[0024] like Figure 2 As shown, when the ground penetrating radar detects a risk cavity, the spray marking member 5 on the mobile platform will start to spray mark. The risk cavity is a large cavity. The spray marking member 5 is used to mark the road surface where the risk cavity is located. The spray marking member 5 includes a rotating disk 51, and the rotating disk 51 is provided with a slide rail. The slide rail is connected to a spray head 55 through a hydraulic telescopic rod 6. A hollow rod 413 extends from the upper end of the rotating disk 51 and a driven gear 52 is provided at the end of the hollow rod 413. The driven gear 52 is meshed with a driving gear 53. The spray head 55 passes through the center of the rotating disk 51 through a pipeline, and the hollow rod 413 is connected to a pump body and a spray box 54. The spray box 54 stores spray material.

[0025] Refer to Figure 7-Figure 9As shown, the early warning component 4 includes a launch monitoring probe 41 and a receiving embedded component 42. A storage rack 8 and a hydraulic drive system 7 are provided on the mobile base 1. The operating system 21 starts the embedding of the launch monitoring probe 41 according to the information. The receiving embedded component 42 is embedded manually or mechanically according to the position of the launch monitoring probe 41. The launch monitoring probe 41 itself and the receiving embedded component 42 cooperate to perform early warning detection on the risk cavity and its surroundings. A plurality of launch monitoring probes 41 and connecting pipes 9 are provided on the storage rack 8. The hydraulic drive system 7 is used to align the launch monitoring probe 41 and the connecting pipe 9 with the spray mark position and then drill vertically into the risk cavity. The hydraulic drive system 7 is a prior art and will not be elaborated here. The launch monitoring probe 41 includes an outer sleeve 411 and a sliding connection telescopic monitoring end. The upper end of the outer sleeve 411 is provided with a connection end connected to the connecting pipe 9 for extending the drilling length. The sliding connection telescopic monitoring end includes a drill bit 412. A hollow rod 413 extends vertically from the center of the drill bit 412. A fixed disk 414 and a movable disk 415 are provided at the upper end of the hollow rod 413. The fixed disk 414 is provided with a plurality of connection grooves distributed along the circumference. A rod body 416 is hinged at the connection groove. The rod body 416 The middle part is hinged to the movable disk 415 through a hinge rod 417, and the movable disk 415 and the hollow rod 413 are movably connected up and down through a through groove. A movable rod 418 connected to the movable disk 415 is provided inside the hollow rod 413. The movable disk 415 is moved up and down by the movable rod 418 to realize the expansion or storage of the rod body 416. A plurality of transmitting sensors 419 and strain force sensors are provided on the rod body 416. The waterproof measures and power supply of the sensors are existing technologies and will not be elaborated here. The receiving embedded part 42 includes an arc-shaped plate 421, a cavity 422 is provided inside the arc-shaped plate 421, a receiver 423 is embedded in the bottom of the arc-shaped plate 421, the receiver 423 is connected to the power supply component inside the cavity 422 through a pipeline, the end face of the receiver 423 that is in contact with the soil is provided with a waterproof layer, and the left and right sides of the cavity 422 of the arc-shaped plate 421 are provided with through holes 424, and the through holes 424 are penetrated by a limiting rod 425, and the limiting rod 425 is used to fix the position of the arc-shaped plate 421. The limiting rod 425 and the through hole 424 are threadedly connected. By setting the transmitting monitoring probe 41 and the receiving embedded part 42, early warning monitoring of risk cavities and their surroundings is performed.

[0026] The present application also provides a detection method, using an urban road ground collapse early warning detection device, comprising the following steps: Step ①: First, classify the roads according to the soil conditions, service life, traffic flow, and maintenance conditions of urban roads, and inspect different roads in sections and in sequence; Step ②, a census of the cavity situation of the road section is conducted through the census element 3 in the early warning detection device, and a cavity distribution map of the road section is established through the detected information, and the operating system 21 marks the risk cavity on the ground by spraying the marking element 5 according to the location of the risk cavity on the ground in the cavity distribution map; Step ③, when all the risk holes in the road section are marked, the early warning detection device drills the transmitting monitoring probe 41 into the hole position through the pressing drive system at the corresponding position, and the synchronous staff bury the receiving embedded parts 42 in a circle around the buried detection probe. The distance and number of the pre-buried receiving embedded parts 42 and the detection probe are set according to the existence of holes around the risk holes; Step ④, when the installation is completed, start the transmitting monitoring probe 41, the transmitting monitoring probe 41 transmits electromagnetic waves, the receiving embedded part 42 receives the electromagnetic wave signal, and transmits the received electromagnetic waves to the operating system 21. The operating system 21 displays the data in real time on the image display after the data is output, showing the situation of the cavity and the surrounding cavities, including whether there is a new cavity and the size change of the original cavity; Step ⑤: When the development of the cavity exceeds the threshold of the road section, an early warning is issued, and the operation of the road section is suspended and repaired.

[0027] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An urban road ground collapse early warning detection device, comprising a mobile base (1), an operating room (2) is provided on the mobile base (1), an operating system (21) is provided in the operating room (2), and the characteristics are: It also includes a survey piece (3) and an early warning piece (4), wherein the early warning piece (4) includes a transmitting monitoring probe rod (41) and a receiving embedded piece (42), wherein the operating system (21) is used to open and close the survey piece (3) and receive information from the survey piece (3), wherein the operating system (21) starts the embedding of the transmitting monitoring probe rod (41) according to the information, and the receiving embedded piece (42) is embedded manually or mechanically according to the position of the transmitting monitoring probe rod (41), and early warning detection of risk cavities and their surroundings is performed through the transmitting monitoring probe rod (41) itself and in cooperation with the receiving embedded piece (42).

2. The urban road ground collapse early warning detection device according to claim 1 is characterized in that: The survey unit (3) comprises a lifting platform (31) installed at the front end of a mobile base (1); the end surface of the lifting platform (31) facing the ground is provided with a photographing and ranging unit (32), a ground-penetrating radar module (33) and a cleaning unit (34); the cleaning unit (34) is used to clean the road surface; the ground-penetrating radar module (33) is provided with a hydraulic drive, which drives the ground-penetrating radar module (33) to fit the road surface according to image information collected by the photographing and ranging unit (32).

3. The urban road ground collapse early warning detection device according to claim 2 is characterized in that: A spray marking member (5) is provided at a position of the mobile base (1) close to the lifting platform (31). The spray marking member (5) is used to mark the road surface at the location of the risk cavity. The spray marking member (5) comprises a rotating disk (51). A slide rail is provided on the rotating disk (51). A spray head (55) is connected to the slide rail via a hydraulic telescopic rod (6). A hollow rod (413) extends from the upper end of the rotating disk (51). A driven gear (52) is provided at the end of the hollow rod (413). The driven gear (52) is meshed with a driving gear (53). The spray head (55) passes through the center of the rotating disk (51) through a pipeline. The hollow rod (413) is connected to a pump body and a spray box (54). Spray material is stored in the spray box (54).

4. The urban road ground collapse early warning detection device according to claim 3 is characterized in that: A placement cavity is provided at the rear of the lower end surface of the lifting platform (31), the ground penetrating radar module (33) is arranged in the placement cavity, and protective baffles are provided at the front and rear end surfaces of the placement cavity.

5. The urban road ground collapse early warning detection device according to claim 4 is characterized in that: The cleaning section (34) comprises left and right driving plates (341), one end of each of the left and right driving plates (341) is connected to the lifting platform (31) and is provided with a driving member to realize the rotation of the left and right driving plates (341). Both sides of the lower end surfaces of the left and right driving plates (341) are slidably connected to deformable plates (342) via connecting rods (344). A hydraulic telescopic rod (6) is connected between the middle of the deformable plate (342) and the middle of the driving plate (341). Bristles (343) are provided at the bottom of the deformable plate (342). The connecting rods (344) on the same driving plate (341) are telescopically and slidably connected to push plates (345) close to the end surface of the other driving plate (341). When a pit is found in the road section to be detected, the hydraulic telescopic rod (6) will be activated to change the deformable plate (342) from straight to arc-shaped to adapt to the pit.

6. The urban road ground collapse early warning detection device according to claim 5 is characterized in that: The mobile base (1) is provided with a storage rack (8) and a hydraulic drive system (7); the storage rack (8) is provided with a plurality of emission monitoring probes (41) and connecting pipes (9); the hydraulic drive system (7) is used to align the emission monitoring probes (41) and the connecting pipes (9) with the spray mark position and then vertically drill into the risk cavity.

7. The urban road ground collapse early warning detection device according to claim 6 is characterized in that: The launch monitoring probe (41) comprises an outer sleeve (411) and a slidingly connected telescopic monitoring end. The upper end of the outer sleeve (411) is provided with a connecting end connected to a connecting pipe (9) for extending the drilling length. The slidingly connected telescopic monitoring end comprises a drill bit (412). A hollow rod (413) extends vertically from the center of the drill bit (412). A fixed disk (414) and a movable disk (415) are provided at the upper end of the hollow rod (413). The fixed disk (414) is provided with a plurality of connecting grooves distributed along the circumference. The rod body (416) is hingedly connected to the movable disk (415) through a hinge rod (417). The movable disk (415) is slidably connected to the hollow rod (413) through a sliding groove. A movable rod (418) connected to the movable disk (415) is provided inside the hollow rod (413). The movable disk (415) is moved up and down by the movable rod (418) to realize the expansion or storage of the rod body (416). The rod body (416) is provided with a plurality of groups of transmitting sensors (419) and strain force sensors.

8. The urban road ground collapse early warning detection device according to claim 7 is characterized in that: The receiving embedded part (42) comprises an arc-shaped plate (421), a cavity (422) is provided inside the arc-shaped plate (421), a receiver (423) is embedded in the bottom of the arc-shaped plate (421), the receiver (423) is connected to the power supply component inside the cavity (422) through a pipeline, a waterproof layer is provided on the end surface of the receiver (423) that contacts the soil, and through holes (424) are provided on the left and right sides of the cavity (422) of the arc-shaped plate (421), and a limiting rod (425) is passed through the through hole (424), and the limiting rod (425) is used to fix the position of the arc-shaped plate (421).

9. A detection method using the urban road ground collapse early warning detection device according to claim 8, characterized in that: The following steps are involved: Step ①: First, classify the roads according to the soil conditions, service life, traffic flow, and maintenance conditions of urban roads, and inspect different roads in sections and in sequence; Step ②, a survey of the cavity conditions of the road section is conducted through the survey element (3) in the early warning detection device, and a cavity distribution map of the road section is established through the detected information, and the operating system (21) marks the risk cavity on the ground according to the location of the risk cavity on the cavity distribution map through the spraying marking element (5); Step ③, when all the risk holes in the road section are marked, the early warning detection device drills the transmitting monitoring probe (41) into the hole position through the pressing drive system at the corresponding position, and the staff simultaneously buries the receiving embedded parts (42) in a circular distribution around the buried detection probe, and the distance and number between the pre-buried receiving embedded parts (42) and the detection probe are set according to the existence of holes around the risk holes; Step ④, when the installation is completed, the transmitting monitoring probe (41) is started, the transmitting monitoring probe (41) transmits electromagnetic waves, the receiving embedded part (42) receives the electromagnetic wave signal, and transmits the received electromagnetic waves to the operating system (21). After the operating system (21) outputs the data, it is presented in real time on the image display, showing the situation of the cavity and the surrounding cavities, including whether there is a new cavity and the size change of the original cavity; Step ⑤: When the development of the cavity exceeds the threshold of the road section, an early warning is issued, and the operation of the road section is suspended and repaired.

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