Thermal imaging induction device for drill hole fractures and use method of thermal imaging induction device

Abstract

The invention discloses a thermal imaging sensing device for drill hole cracks and a using method thereof, and belongs to the field of underground engineering of roadways, tunnels and tunnels. The device comprises a main rod body, a thermal imaging induction system and a main body sleeve, the main rod body injects composite slurry containing superfine silica gel particles into a drill hole through a nozzle in the end portion, the thermal imaging induction system comprises an infrared thermal imaging probe arranged on the surface of the main rod body and an image sensor arranged at the end portion of the main body sleeve, and after the slurry is fully sprayed on the surface of an anchor hole, the composite slurry is injected into the drill hole. The thermal imaging sensing probe can sense the change of a thermal field in a crack and convert the change into an electric signal, the electric signal is converted into a thermogram through the comprehensive data processor, finally, a thermal distribution field in an anchor hole is analyzed through infrared radiation energy distribution in the thermogram, the distribution condition of slurry in the crack can be determined, and therefore the anchor hole crack is detected. The structure can detect the accurate position of the crack in the anchor hole, and has the advantages of accurate detection, reasonable structure and stable function.

Description

Technical Field

[0001] The invention relates to a thermal imaging sensing device for a drilled crack and a use method thereof, and belongs to the field of underground engineering of lanes, tunnels and tunnels. Background Art

[0002] During tunnel excavation and mining, the state of the tunnel surrounding rock will change, which will lead to the further development of cracks around the surrounding rock, thus affecting the stability of the tunnel surrounding rock and posing a direct threat and hidden danger to construction and production safety. In underground projects, grouting reinforcement is often used to fill and repair cracks to strengthen the surrounding rock. However, cracks vary in size and are hidden inside the surrounding rock and difficult to detect. This makes it impossible to select the type of slurry. Because cement slurry, ultrafine cement slurry, and chemical slurry have different particle sizes, the crack openings they can penetrate are also different, which greatly reduces the effectiveness of grouting. Whether it is single grouting, gradient grouting, or classified grouting, the first task is to detect cracks in the surrounding rock, which places higher demands on crack detection.

[0003] Currently, there are very limited methods for detecting cracks in surrounding rock. The most widely used method in engineering projects is in situ testing, namely core drilling and borehole peepholes. In situ testing can be conducted in a real-world engineering environment, consistent with actual engineering conditions, and therefore the resulting data and results are more reliable. However, it is time-consuming and labor-intensive, requiring significant time and human resources, and is limited by site conditions, limiting its feasibility and accuracy. Uncertainty and uncontrollable factors in the field environment may affect experimental results. Borehole peepholes are more convenient, efficient, and easy to carry and operate. However, their limited field of view prevents simultaneous observation of large areas and is also limited by the diameter and depth of the hole or pipe. If the hole or pipe size exceeds the borehole peephole's applicable range, effective inspection and observation may be impossible. Given these challenges, there's an urgent need to develop a device capable of accurately detecting the aperture, development, and orientation of surrounding rock fractures. This device can identify and assess the presence and nature of borehole fractures early, optimize engineering design and construction, provide more accurate parameters and values ​​for engineering design, improve project quality and efficiency, and help identify and resolve fracture issues early to meet the demands of engineering construction. Researching and applying new borehole fracture detection methods can improve project safety and reliability, reduce risks and losses, and promote the sustainable development of engineering construction. Summary of the Invention

[0004] Technical problem: To address the shortcomings of existing technologies, a thermal imaging sensing device for borehole cracks and a method for using the device are provided, which can accurately understand and evaluate the properties and distribution of borehole cracks, thereby guiding the improvement of project safety and reliability, reducing risks and losses, and promoting the sustainable development of engineering construction.

[0005] Technical solution: To achieve the above technical objectives, the present invention discloses a thermal imaging induction detection device for drilling cracks, comprising a main rod body with a hollow porous structure and a mounting base; a buffer device is provided at the end of the main rod body;

[0006] Four axially arranged slideway structure sections are provided at equal intervals on the outer wall of the main rod body, and the slideway structure sections are provided with gear slide grooves; an axially through-air injection pipe is provided at the center of the main rod body, and four grouting pipes are also provided in the main rod body at equal intervals around the air injection pipe. Four nozzles pointing to the borehole wall are circumferentially provided on the side surface of the main rod body near the end, and four air jet nozzles are staggered between the nozzles. The four nozzles are connected to the four grouting pipe ends in the main rod body through radial channels respectively, and the four air jet nozzles are connected to the air injection pipe ends through four air injection holes respectively; the tail ends of the four grouting pipes and the air injection pipes are connected to the pipeline through piston switches; a wire displacement sensor for detecting the moving distance of the main rod body is provided on the outer wall of the middle section of the main rod body, and an infrared sensing probe is provided at the end of the main rod body near each nozzle position;

[0007] The mounting base includes a tray and an anti-slip nut arranged on the thread at the tail end of the main rod body. A main sleeve is provided on the main rod body between the tray and the anti-slip nut. The opening buckle of the main sleeve is set on the tray. Four gears matching the gear groove in the slide structure section on the outer wall of the main rod are provided inside the main sleeve near the main rod body. The four gears are connected to a driving device. The teeth on the gear groove work in coordination with the gears to push the main rod body toward the anchor hole. An integrated data processor a and an integrated data processor b are provided inside the main sleeve away from the main rod body. The integrated data processor a is connected to the wire displacement sensor through data line A, and the integrated data processor b is connected to the infrared sensing probe through data line B.

[0008] Furthermore, the main body sleeve is provided with a thermal imaging processor connection socket and a data storage device connected to the integrated data processor a, and the thermal imaging processor is connected to the integrated data processor a through the thermal imaging processor connection socket.

[0009] Furthermore, an anti-backflow device is provided in the gas injection pipe to prevent backflow after the gas injection stops, and an insulation layer is provided on the outside of the grouting pipe to ensure that the temperature change of the slurry in the grouting pipe is controllable.

[0010] Furthermore, the nozzle is used to spray the composite slurry transported by the grouting pipe onto the wall of the anchor hole, and at the same time, the jet nozzle is used to spray high-pressure gas to accelerate the flow of the composite slurry on the surface of the hole wall, increase the pore pressure so that the composite slurry fills the cracks on the entire borehole wall. The composite slurry is a mixture of ordinary grouting slurry and adhesive, which contains ultrafine silica gel particles with a particle size of 75 to 150 microns. The adhesive makes the composite slurry and the ultrafine silica gel particles in the slurry better adhere to the borehole cracks. The ultrafine silica gel particles have good heat storage performance. To effectively reduce the temperature drop rate of the slurry injected into the cracks, the composite slurry needs to be heated to 30-60°C before injection, so that the temperature of the composite slurry sprayed on the wall of the anchor hole can be sensed by the infrared thermal imaging probe. The infrared thermal imaging probe detects the thermal field changes generated by the ultrafine silica gel particles penetrating into the cracks, and converts them into electrical signals. The electrical signals are transmitted to the integrated data processor through data line B. The integrated data processor can convert the electrical signals into data, and finally transmit the electrical signals and data to the thermal imaging processor through the socket or store them in the data storage device.

[0011] Furthermore, the pulling end of the pull-wire displacement sensor is connected to the end of the main rod body through a card slot. As the gear pushes the main rod body at a uniform speed, the position information of each section of the anchor hole will be recorded and transmitted to the integrated data processor for processing by data line A; after the electrical signal and data are transmitted to the thermal imaging processor through the data line in the socket, the computer integrates the cross-sectional position information to screen the thermal field change data of the ultrafine silica gel particles, and selects the thermal field change data of the ultrafine silica gel particles parallel to the section, and then re-synthesizes it based on the integrated cross-sectional position information. When the thermal image no longer spreads into the rock and soil layer, the crack is filled, and a three-dimensional map of the anchor hole crack can be drawn using theoretical simulation, dynamic evaluation, real-time monitoring and other technologies.

[0012] A method for using a thermal imaging sensing device for drilling cracks, comprising the following steps:

[0013] Drill anchor holes at pre-marked locations in the surrounding rock, insert the main sleeve into the anchor holes, and connect the external pipelines to the grouting pipe and the gas injection pipe through piston switches to supply composite slurry and gas.

[0014] The composite slurry containing ultrafine silica gel particles is stirred evenly in a grouting vessel and heated to 30-60°C. The grouting vessel is then sealed, the high-pressure air pump is started, and the drive device is started to drive the gear to rotate.

[0015] As the gear pushes the main rod into the anchor hole at a constant speed, the main rod continues to penetrate into the anchor hole while spraying the composite slurry onto the anchor hole wall. The nozzle continuously sprays the composite slurry containing ultrafine silica gel particles onto the anchor hole wall. The ultrafine silica gel particles in the composite slurry penetrate into the cracks on the hole wall.

[0016] At this time, the infrared sensing probe continuously detects the three-dimensional thermal field change thermal image generated by the infiltration of the cracks on the hole wall, converts it into an electrical signal, and transmits the electrical signal to the integrated data processor a through the data line B. The integrated data processor a transmits the electrical signal to the thermal imaging processor through the socket or stores it in the data storage device. When the infrared sensing probe detects that the thermal image no longer spreads into the rock and soil layer, it means that the composite slurry has filled the cracks; at the same time, as the main rod moves, the pull-out end on the pull-wire displacement sensor is pulled to obtain and record the position information of each section in the anchor hole and transmit it to the integrated data processor for processing through the data line A. The position information of the section is the position data of the ultrafine silica gel particles in the anchor hole, that is, the ultrafine silica gel particle point data;

[0017] The position data of ultrafine silica gel particles are read and screened in the thermal imaging processor, and the position data of ultrafine silica gel particles parallel to the section are selected. By analyzing the particle position data of different sections, they are synthesized through three-dimensional simulation software, and then re-synthesized based on the comprehensive section position information, and further a three-dimensional map of the anchor hole cracks can be drawn.

[0018] Beneficial Effects: This device can accurately detect the presence, size, and direction of cracks and assess their impact on the project, allowing appropriate preventive measures or design adjustments to be taken. The high-temperature slurry injected provides more accurate, detailed, and reliable crack information, supporting optimized project design and construction. Detecting cracks through the principle of thermal imaging avoids the limitations of imaging resolution. The excellent fluidity and thermal capacity of the composite slurry containing ultrafine silica particles allows the detection of the actual location and direction of cracks in the surrounding rock, thereby eliminating potential construction risks to a certain extent, saving costs and increasing safety benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of drilling in an embodiment of the present invention;

[0020] Figure 2 Schematic diagram of the decoupling strands of a thermal imaging sensing device for drilling fractures according to an embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of the installation of a thermal imaging sensing device for drilling cracks according to an embodiment of the present invention;

[0022] FIG4( a ) is a schematic cross-sectional view of a main rod slideway structure section in an embodiment of the present invention;

[0023] FIG4( b ) is a schematic cross-sectional view of an infrared sensor probe according to an embodiment of the present invention;

[0024] FIG4( c ) is a schematic cross-sectional view of the gas injection holes in an embodiment of the present invention;

[0025] Figure 4(d) is a schematic cross-sectional view of a grouting hole in an embodiment of the present invention;

[0026] Figure 5 This is a three-dimensional schematic diagram of the end of the main rod body in an embodiment of the present invention;

[0027] Figure 6 This is a three-dimensional schematic diagram of the main sleeve in an embodiment of the present invention;

[0028] Figure 7 Schematic diagram of the cross section of the injection of composite slurry and ultrafine silica gel particles in an embodiment of the present invention.

[0029] In the figure: 1-surrounding rock, 2-data line B, 3-grouting pipe, 4-air injection pipe, 5-anti-backflow device, 6-thermal insulation layer, 7-infrared sensing probe, 8-jet nozzle, 9-air injection hole, 10-composite slurry, 11-buffer device, 12-nozzle, 13-slot, 14-crack, 15-pull wire, 16-pull wire displacement sensor, 17-anchor hole, 18-gear, 19-data line A, 20-integrated data processor, 21-socket, 22-data storage device, 23-thermal imaging processor, 24-piston switch, 25-main rod body, 26-anti-slip wire nut, 27-driving device, 28-integrated data processor, 29-main sleeve, 30-tray, 32-gear slide, 33-ultrafine silica gel particles. DETAILED DESCRIPTION

[0030] The present invention will be further described below with reference to the embodiments in the accompanying drawings:

[0031] like Figure 1 、 Figure 2 and Figure 5 As shown, the present invention discloses a thermal imaging sensing device for drilling cracks, which includes a main rod body 25, a thermal imaging sensing system and a main body sleeve 29.

[0032] The main rod body 25 is a hollow porous structure, which is divided into a slide structure and a nozzle structure along the axis. The tail section of the main rod is provided with a tray 30 and an anti-slip nut 26 through a thread. The interior of the main rod body 25 is provided with 3 to 6 grouting pipes 3 and hollow channels evenly distributed along the circumference: the grouting pipe 3 can be injected with a composite slurry 10 containing ultrafine silica gel particles 33; the hollow pipe is an air injection pipe 7, which can be injected with high-pressure gas through a high-pressure air pump. The grouting pipe 3 and the air injection pipe 4 are both provided with a piston switch 24 at their pipe mouths for connecting to external pipelines. The outer periphery of the slide structure section of the main rod body 25 is provided with a gear slide 32 that is symmetrical along the cross section; the gear slide 32 is provided with gear teeth for coordinating with the gear 28 to push the main rod body 25 toward the anchor hole 17. The nozzle structure section of the main rod body 25 is set at the end, and two groups of through holes are provided along the cross section: one group of through holes is the air injection hole 9, which is connected to the air injection pipe 4, and 4 to 6 air jet nozzles 8 are provided at the orifice thereof. An anti-backflow device 5 is provided in the air injection pipe to prevent backflow after the air injection stops. An insulation layer 6 is provided outside the pipe to ensure that the temperature drop of the slurry in the pipe is controllable; the other group of through holes is the grouting hole, which is connected to the grouting pipe 3, and a nozzle 12 is installed at the orifice thereof. The nozzle 12 can spray the composite slurry 10 containing ultrafine silica gel particles 33 onto the surface of the anchor hole 17. A buffer device 11 is provided at the end of the nozzle structure to protect components such as infrared thermal imaging probes, as shown in Figures 4(a), 4(b), 4(c) and 4(d).

[0033] The ultrafine silica gel particles 33 are tiny particles with good thermal capacity. The composite slurry, such as a polymer material, is a flow carrier for the ultrafine silica gel particles 33 and has good thermal stability and a low thermal expansion coefficient. It is also pollution-free, low-cost, and has good fluidity. Before injection, it should be heated to 30-60°C so that the slurry temperature can be sensed by an infrared thermal imaging probe.

[0034] like Figure 3 As shown, its method of use and steps are as follows: First, drill an anchor hole 17 at a pre-marked position in the surrounding rock 1, insert the main sleeve 29 into the anchor hole 17, and then securely connect the external pipeline to the grouting pipe 3 and the air injection pipe 4 via the piston switch 24. The external pipeline connected to the grouting pipe 3 should first be connected to the grouting vessel and then to the high-pressure air pump, while the external pipeline connected to the air injection pipe 4 should be directly connected to the high-pressure air pump; the composite slurry 10 containing ultrafine silica gel particles 33 is stirred evenly in the grouting vessel and heated to 30-60°C, then the grouting vessel is closed, the high-pressure air pump is started, and the drive device 27 is started;

[0035] As gear 18 pushes main rod 25 into anchor hole 17 at a constant speed, composite slurry 10 containing ultrafine silica gel particles 33 is sprayed onto the surface of anchor hole 17 through nozzle 12. Under the pressure of high-pressure gas injected from gas injection hole 9, composite slurry 10 accelerates within the anchor hole and penetrates into cracks 14 as much as possible, continuously penetrating along the development direction of cracks 14.

[0036] like Figure 6 and Figure 2 As shown, the main sleeve 29 is a hollow rod, partially embedded in the anchor hole 17. A gear chute 32 is provided in the middle hollow channel, and a gear 18 is provided on the chute to push the main rod 25. The main sleeve 29 is internally provided with a gear 18, a drive device 27, a wire displacement sensor 16, and an integrated data processor 20. Among them, the gear 18 is connected to the drive device 27 via a rotating shaft and is driven at a constant speed by the drive device 27; the integrated data processor 20 is connected to the wire displacement sensor 16 and the infrared sensor probe 7 via data cable A 19 and data cable B 2, respectively, and is connected to the thermal imaging processor connection socket 21 and the data storage device 22.

[0037] like Figure 2 and Figure 7 As shown, the thermal imaging sensing system includes infrared sensing probes 7 and wire displacement sensors 16. Three to six infrared sensing probes 7 are installed on the rod surface, and each infrared sensing probe 7 is equipped with three to six infrared thermal imaging sensors. After grouting begins, the infrared sensing probes should remain in the on state. The infrared thermal imaging sensors can detect the three-dimensional thermal field changes generated by the ultrafine silica gel particles 33 that penetrate the cracks 14, and convert them into electrical signals. The electrical signals are transmitted to the integrated data processor 20 via the data line B2. The integrated data processor 20 can convert the electrical signals into data. Finally, the electrical signals and data are transmitted to the thermal imaging processor 23 through the socket 21 or stored in the data storage 22.

[0038] The pull-wire displacement sensor 16 is mounted at the end of the main sleeve 29, with its pull-out end positioned in the slot 13 at the end of the main rod 25. As the gear 18 pushes the main rod 25 at a constant speed, the position information of each section of the anchor hole 17 is recorded and transmitted via the data cable A 19 to the integrated data processor 20 for processing. After the electrical signal and data are transmitted to the thermal imaging processor 23 via the socket 21, the computer integrates the cross-sectional position information to filter the position data of the ultrafine silica gel particles 33, retaining the position data of the ultrafine silica gel particles 33 parallel to the cross section. The data is then resynthesized based on the integrated cross-sectional position information. When the thermal image no longer extends into the rock layer, the crack is considered filled. Ultimately, a three-dimensional map of the anchor hole crack is drawn through theoretical simulation, dynamic evaluation, and real-time monitoring.

[0039] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A thermal imaging sensing detection device for drilling cracks, Features: It comprises a main rod body (25) with a hollow porous structure and a mounting base; a buffer device (11) is provided at the end of the main rod body (25); Four axially arranged slideway structure sections are arranged at equal intervals on the outer wall of the main rod body (25), and the slideway structure sections are provided with gear slide grooves (32); an axially through-going gas injection pipe (4) is arranged at the center of the main rod body (25), and four grouting pipes (3) are arranged at equal intervals around the gas injection pipe (4) in the main rod body (25); four nozzles (12) are arranged circumferentially on the side surface of the main rod body (25) near the end and directed toward the borehole wall; four jet nozzles (8) are arranged alternately between the four nozzles (12), and the four nozzles (12) are respectively arranged through the diameter The passages are respectively connected to the ends of four grouting pipes (3) in the main rod body (25); the four air jet nozzles (8) are respectively connected to the ends of the air injection pipes (4) through four air injection holes (9); the tail ends of the four grouting pipes (3) and the air injection pipes (4) are connected to the pipeline through a piston switch (24); a wire displacement sensor (16) for detecting the moving distance of the main rod body (25) is provided on the outer wall of the middle section of the main rod body (25); and an infrared sensing probe (7) is correspondingly provided at the end of the main rod body (25) near each nozzle (12); The mounting base comprises a tray (30) and an anti-slip thread nut (26) arranged on the thread at the tail end of the main rod body (25); a main sleeve (29) is arranged on the main rod body (25) between the tray (30) and the anti-slip thread nut (26); an opening of the main sleeve (29) is buckled on the tray (30); four gears (18) matching with the gear slide groove (32) in the slideway structure section on the outer wall of the main rod body (25) are arranged inside the main sleeve (29) near the main rod body (25); the four gears ( 18) is connected to a driving device (27), the gear teeth on the gear slide (32) and the gear (18) work in coordination to push the main rod body (25) toward the anchor hole (17), and a comprehensive data processor a (20) and a comprehensive data processor b (28) are arranged inside the main body sleeve (29), the comprehensive data processor a (20) is connected to the wire displacement sensor (16) through the data line A (19), and the comprehensive data processor b (28) is connected to the infrared sensing probe (7) through the data line B (2).

2. The thermal imaging sensing detection device for drilling cracks according to claim 1, Features: The main body sleeve (29) is provided with a thermal imaging processor connection socket (21) and a data storage device (22) connected to the integrated data processor a (20). The thermal imaging processor is connected to the integrated data processor a (20) via the thermal imaging processor connection socket (21).

3. The thermal imaging sensing detection device for drilling cracks according to claim 1, Features: An anti-backflow device (5) is provided inside the gas injection pipe (4) to prevent backflow after gas injection stops, and a heat insulation layer (6) is provided outside the grouting pipe (3) to ensure that the temperature change of the slurry in the grouting pipe (3) is controllable.

4. The thermal imaging sensing detection device for drilling cracks according to claim 1, Features: The nozzle (12) is used to spray the composite slurry (10) transported by the grouting pipe (3) onto the wall of the anchor hole (17), and at the same time, the jet nozzle (8) is used to spray high-pressure gas to accelerate the flow of the composite slurry on the surface of the hole wall, increase the hole pressure so that the composite slurry (10) fills the cracks on the entire borehole wall. The composite slurry (10) is a mixture of ordinary grouting slurry and an adhesive, wherein ultrafine silica gel particles (33) are mixed, and the particle size of the ultrafine silica gel particles (33) is 75 to 150 microns. The adhesive makes the composite slurry (10) and the ultrafine silica gel particles (33) in the slurry better adhere to the borehole cracks. The ultrafine silica gel particles have good heat storage performance and effectively reduce the injection The temperature drop rate of the slurry in the cracks is such that the composite slurry (10) needs to be heated to 30-60°C before injection so that the temperature of the composite slurry (10) sprayed onto the wall of the anchor hole (17) can be sensed by the infrared thermal imaging probe (7). The infrared thermal imaging probe (7) detects the thermal field changes generated by the ultrafine silica gel particles (33) infiltrating the cracks (14) and converts them into electrical signals. The electrical signals are transmitted to the integrated data processor (20) through the data line B (2). The integrated data processor (20) can convert the electrical signals into data. Finally, the electrical signals and data are transmitted to the thermal imaging processor (23) or stored in the data storage device (22) through the socket (21).

5. The thermal imaging sensing detection device for drilling cracks according to claim 4, Features: The pull wire (15) of the pull wire displacement sensor (16) is connected to the end of the main rod body (25) through the card slot (13). As the gear (18) pushes the main rod body (25) at a uniform speed, each cross-sectional position information of the anchor hole (17) will be recorded and transmitted to the comprehensive data processor (20) for processing through the data line A (19); after the electrical signal and data are transmitted to the thermal imaging processor (23) through the data line in the socket (21), the computer integrates the cross-sectional position information to screen the thermal field change data of the ultrafine silica gel particles (33), and selects the thermal field change data of the ultrafine silica gel particles (33) parallel to the cross section, and then re-synthesizes it according to the integrated cross-sectional position information. When the thermal image no longer spreads into the rock and soil layer, the crack is filled, and a three-dimensional map of the anchor hole crack can be drawn by using theoretical simulation, dynamic evaluation, real-time monitoring and other technologies.

6. A method for using the thermal imaging sensing device for drilling cracks according to any one of claims 1 to 5, Its characteristics are that Here are the steps: Drilling an anchor hole (17) at a pre-marked position of the surrounding rock (1), inserting a main sleeve (29) into the anchor hole (17), and connecting an external pipeline with a grouting pipe (3) and an air injection pipe (4) via a piston switch (24) to supply a composite slurry (10) and air; The composite slurry (10) containing ultrafine silica gel particles (33) is stirred evenly in a grouting vessel and heated to 30-60° C., then the grouting vessel is closed, a high-pressure air pump is started, and a driving device (27) is started to drive the gear (18) to rotate; As the gear (18) pushes the main rod (25) into the anchor hole (17) at a constant speed, the main rod (25) continuously penetrates into the anchor hole and simultaneously sprays the composite slurry (10) onto the wall of the anchor hole. The nozzle (12) continuously sprays the composite slurry (10) containing ultrafine silica gel particles (33) onto the wall of the anchor hole (17). The ultrafine silica gel particles (33) in the composite slurry (10) penetrate into the cracks (14) on the wall of the hole. At this time, the infrared sensing probe (7) continuously detects the three-dimensional thermal field change thermal image generated by the infiltration of the cracks (14) on the hole wall, converts it into an electrical signal, and transmits the electrical signal to the integrated data processor a (20) through the data line B (2). The integrated data processor a (20) transmits the electrical signal to the thermal imaging processor (23) or stores it in the data storage device (22) through the socket (21). When the infrared sensing probe (7) detects that the thermal image no longer spreads into the rock and soil layer, it means that the composite slurry (10) has filled the cracks. At the same time, as the main rod body (25) moves, the pull-out end on the wire displacement sensor (16) is pulled to obtain and record the position information of each section in the anchor hole (17) and transmit it to the integrated data processor (20) for processing through the data line A (19). The position information of the section is the position data of the ultrafine silica gel particles (33) in the anchor hole, that is, the point data of the ultrafine silica gel particles (33); The position data of the ultrafine silica gel particles (33) are read and screened in the thermal imaging processor (23), and the position data of the ultrafine silica gel particles (33) parallel to the section are selected. The particle position data of different sections are analyzed and synthesized by three-dimensional simulation software, and then re-synthesized based on the comprehensive section position information, so as to further draw a three-dimensional map of the anchor hole crack.

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