A strong water-permeable area borehole acoustic testing device and its usage method

Abstract

The present invention discloses a borehole acoustic testing device and a using method for a strongly permeable water area. The testing device includes a hole wall lubricating component, a coupling agent - acoustic wave probe synchronous moving component, a water supply device, and a data acquisition device; the hole wall lubricating component is used to inject mud into the borehole in the strongly permeable water area to lubricate the hole wall; the coupling agent - acoustic wave probe synchronous moving component is used to extend into the borehole in the strongly permeable water area and is used to connect the water supply device and the data acquisition device located outside the borehole in the strongly permeable water area. The water supply component is used to inject water into the coupling agent - acoustic wave probe synchronous moving component, and the data acquisition device is used to acquire the acoustic wave signals collected by the coupling agent - acoustic wave probe synchronous moving component. By injecting mud into the borehole through the hole wall lubricating component to lubricate the hole wall, and further on the basis of lubricating the hole wall, with the ingenious cooperation of the coupling agent - acoustic wave probe synchronous moving component, the water supply device, and the data acquisition device, the acoustic wave testing work at different positions of the borehole in the strongly permeable water area can be realized.

Description

Technical Field

[0001] The present invention relates to a borehole acoustic wave testing device for a strongly permeable water area, belonging to the field of engineering geological exploration. Background Art

[0002] Borehole acoustic wave testing refers to using the time for acoustic waves to slide along the rock mass of the borehole wall at a certain distance to measure the acoustic wave velocity of the rock mass. According to the longitudinal wave first arrival time difference between the transmitter and two receiving transducers and the distance between the two receiving transducers, the longitudinal wave velocity value of the borehole wall rock mass is calculated, and then the physical and mechanical parameters, rock mass integrity, and rock mass weathering degree of the borehole wall rock mass are evaluated. Acoustic wave testing generally uses water as a coupling agent. Before the testing work, the water needs to be filled into the section of the borehole to be measured, and then the acoustic wave probe is placed at the measuring point position in the water injection area to carry out the testing work. However, for boreholes in strongly permeable water areas, the water permeability speed is relatively large, and the coupling agent is seriously lost. If the method of injecting water and testing simultaneously is adopted, the data waveform will be seriously interfered due to the too large water injection flow rate. Therefore, at present, it is basically impossible to effectively carry out acoustic wave testing on boreholes in strongly permeable water areas, which seriously affects the evaluation of relevant parameters of the rock mass by technicians and brings potential safety hazards to the project.

[0003] In view of this, the present invention is specifically proposed. Summary of the Invention

[0004] The present invention provides a borehole acoustic wave testing device for a strongly permeable water area and a using method thereof. Through the ingenious cooperation of the borehole wall lubrication component, the coupling agent-acoustic wave probe synchronous movement component, the water supply device, and the data acquisition device, it provides effective support for realizing borehole acoustic wave testing in a strongly permeable water area; further, the borehole acoustic wave testing in a strongly permeable water area is carried out by using the using method of the present invention with this testing device.

[0005] The technical solution of the present invention is as follows:

[0006] According to the first aspect of the present invention, a borehole acoustic wave testing device for a strongly permeable water area is provided, including a borehole wall lubrication component 1, a coupling agent-acoustic wave probe synchronous movement component, a water supply device, and a data acquisition device; the borehole wall lubrication component 1 is used to inject mud into the borehole in the strongly permeable water area to lubricate the borehole wall; the coupling agent-acoustic wave probe synchronous movement component is used to extend into the borehole in the strongly permeable water area and is used to connect the water supply device and the data acquisition device located outside the borehole in the strongly permeable water area. The water supply component is used to inject water into the coupling agent-acoustic wave probe synchronous movement component, and the data acquisition device is used to acquire the acoustic wave signals collected by the coupling agent-acoustic wave probe synchronous movement component.

[0007] The hole wall lubrication assembly 1 includes a guide post 2, a diversion wall 3, and a connecting post 4. The diversion wall 3 is provided with an inlet and an outlet, and the inlet is larger than the outlet. A hollow cylindrical straight-through is provided on the outlet side; the guide post 2 embedded in the hollow cylindrical straight-through is connected to the inner wall of the hollow cylindrical straight-through by the connecting post 4, and the tip of the guide post 2 extends out from the outlet side of the diversion wall 3.

[0008] It further includes a sonic probe data transmission line 20 and a water pipe 16. The sonic probe data transmission line 20 includes an upper sonic probe data transmission line and a lower sonic probe data transmission line; the couplant-sonic probe synchronous movement assembly includes a polypropylene film bag 5, a sealing cover 6, a sonic probe 7, a hollow male-female screw male end 11, and a hollow male-female screw female end 12. One end of the opening of the sealing cover 6 is connected to one end of the hollow male-female screw female end 12; a sonic probe 7 is provided in the cavity of the polypropylene film bag 5, and one end of the opening is connected to one end of the hollow male-female screw male end 11. One end of the lower sonic probe data transmission line is connected to the sonic probe 7, and the other end of the lower sonic probe data transmission line leads out a waterproof plug female end 23; one end of the upper sonic probe data transmission line leads out a waterproof plug male end 22 connected to the waterproof plug female end 23, and the other end of the upper sonic probe data transmission line extends out from the side of the sealing cover 6 far away from the opening end for connecting to the data acquisition device; the hollow male-female screw male end 11 and the hollow male-female screw female end 12 are connected to form a receiving cavity for receiving the waterproof plug male end 22 and the waterproof plug female end 23; one end of the water pipe 16 extends into the sealing cover 6, and the other end of the water pipe 16 is used for communicating with the water supply device.

[0009] Two sealing plugs 13 and an exhaust valve 15 are provided on the side of the sealing cover 6 far away from the opening end; one sealing plug 13 is for the water pipe 16 to pass in and out, and one sealing plug 13 is for the upper sonic probe data transmission line to pass in and out.

[0010] The water supply device includes a water press 17 and a pressure gauge 18 and a pressure relief valve 19 provided on the water pipe 16 connected to the water press 17.

[0011] According to the second aspect of the present invention, a method for using a borehole acoustic testing device in a strong water-permeable area is provided, including: placing the hole wall lubrication assembly 1 at the position of the borehole orifice, injecting mud into the borehole in the strong water-permeable area according to the hole wall lubrication assembly 1 to lubricate the hole wall; removing the hole wall lubrication assembly 1 from the borehole orifice; connecting the couplant-acoustic probe synchronous moving assembly to a water supply device through a water pipe 16; injecting water into the polypropylene film bag 5 of the couplant-acoustic probe synchronous moving assembly through the water supply device until water evenly flows out of the exhaust hole of the exhaust valve 15 in the couplant-acoustic probe synchronous moving assembly, closing the exhaust valve 15, and placing the assembled couplant-acoustic probe synchronous moving assembly into the borehole section to be measured; continuing to use the water supply device to inject water into the polypropylene film bag 5 until the polypropylene film bag 5 contacts the hole wall; connecting the couplant-acoustic probe synchronous moving assembly to a data acquisition device through an upper acoustic probe data transmission line, starting the acoustic wave mainframe 21 and completing the acquisition of borehole acoustic wave data at this depth.

[0012] The beneficial effects of the present invention are as follows: The present invention adopts a hole wall lubrication assembly, a couplant-acoustic probe synchronous moving assembly, a water supply device, and a data acquisition device; injecting mud into the borehole through the hole wall lubrication assembly to lubricate the hole wall, and further, on the basis of lubricating the hole wall, through the ingenious cooperation of the couplant-acoustic probe synchronous moving assembly with the water supply device and the data acquisition device, the acoustic wave testing work at different positions of the borehole in the strong water-permeable area can be realized; the whole device adopts an ingenious design to solve the problems in current engineering practice, make up for the deficiencies of existing acoustic wave testing devices in strong water-permeable areas, effectively avoid the problem that acoustic wave testing cannot be carried out due to the loss of couplant in strong water-permeable areas, and solve the problem of quantitatively evaluating the physical and mechanical parameters, rock mass integrity degree, and weathering degree of rock masses in strong water-permeable areas. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0014] Figure 2 It is a schematic diagram of the structure of the present invention (hole wall lubrication assembly);

[0015] Figure 3 It is a schematic diagram of the structure of the present invention (polypropylene film bag);

[0016] Figure 4 It is a schematic diagram of the structure of the present invention (sealing cover and hollow male and female screw ends);

[0017] Figure 5 It is a side view of the structure of the present invention (sealing cover and hollow male and female screw ends);

[0018] Figure 6 It is a schematic diagram of the structure of the present invention (exhaust valve);

[0019] Figure 7Schematic diagram of the structure of the present invention (sealing plug);

[0020] Figure 8 Schematic diagram of the structure of the present invention (acoustic wave probe);

[0021] Figure 9 Schematic diagram of the structure of the present invention (hollow male and female screw);

[0022] Figure 10 Schematic diagram of the structure of the present invention (waterproof plug);

[0023] Figure 11 Schematic diagram of the structure of the present invention (water press);

[0024] Figure 12 Schematic diagram of the structure of the present invention (acoustic wave main unit);

[0025] Figure 13 Waveform diagram of acoustic wave data collected by the method of injecting water while collecting at the edge of the borehole in the strongly permeable water area (water injection flow rate: 50 L / min);

[0026] Figure 14 Waveform diagram of acoustic wave data collected by using the present invention in the borehole in the strongly permeable water area;

[0027] Each label in the figure is as follows: 1. Hole wall lubrication assembly, 2. Guide post, 3. Diversion wall, 4. Connecting post, 5. Polypropylene film bag, 6. Sealing cover, 7. Acoustic wave probe, 8. Transmitting module, 9. No. 1 receiving module, 10. No. 2 receiving module, 11. Male end of the hollow male and female screw, 12. Female end of the hollow male and female screw, 13. Sealing plug, 14. Wiring hole, 15. Exhaust valve, 16. Water pipe, 17. Water press, 18. Pressure gauge, 19. Pressure relief valve, 20. Acoustic wave probe data transmission line, 21. Acoustic wave main unit, 22. Male end of the waterproof plug, 23. Female end of the waterproof plug, 24. Heat fusion contact area between the male end of the hollow male and female screw and the polypropylene film bag. Detailed implementation manners

[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention. It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments may be combined with each other arbitrarily.

[0029] At present, water is generally used as a coupling agent in acoustic wave testing. For boreholes in highly permeable water areas, the water permeability speed is relatively high, and the coupling agent is severely lost. If the method of injecting water while testing is adopted, the data waveform will be severely interfered due to the too high water injection flow rate. Therefore, it is basically impossible to conduct effective acoustic wave testing on boreholes in highly permeable water areas at present, which seriously affects the evaluation of related parameters of rock masses by technicians and brings potential safety hazards to engineering. In order to effectively conduct acoustic wave testing on boreholes in highly permeable water areas, the present invention is proposed. The embodiments of the present invention will be described below with reference to the accompanying drawings.

[0030] As Figures 1-14 shown, according to the first aspect of the embodiment of the present invention, a device for acoustic wave testing of boreholes in highly permeable water areas is provided, including a hole wall lubrication assembly 1, a coupling agent-acoustic wave probe synchronous movement assembly, a water supply device, and a data acquisition device; the hole wall lubrication assembly 1 is used to inject mud into the borehole in the highly permeable water area to lubricate the hole wall; the coupling agent-acoustic wave probe synchronous movement assembly is used to extend into the borehole in the highly permeable water area and is used to connect the water supply device and the data acquisition device located outside the borehole in the highly permeable water area. The water supply assembly is used to inject water into the coupling agent-acoustic wave probe synchronous movement assembly, and the data acquisition device is used to acquire the acoustic wave signals collected by the coupling agent-acoustic wave probe synchronous movement assembly.

[0031] Furthermore, the hole wall lubrication assembly 1 includes a guide post 2, a diversion wall 3, and a connecting post 4. The diversion wall 3 is provided with an inlet and an outlet, and the inlet is larger than the outlet. A hollow cylindrical straight-through is provided on the outlet side; the guide post 2 embedded in the hollow cylindrical straight-through is connected to the inner wall of the hollow cylindrical straight-through through the connecting post 4, and the tip of the guide post 2 extends out from the outlet side of the diversion wall 3. Applying the above technical solution, it can be seen that the guide post 2 and the hollow cylindrical straight-through are fixed to each other through the connecting post 4. During operation, the presence of the guide post 2 causes the injected mud to flow along the diversion wall 3 and then along the inner wall of the hollow cylindrical straight-through to the hole wall of the borehole in the highly permeable water area, achieving the purpose of lubricating the hole wall and providing strong support for the subsequent better contact between the coupling agent-acoustic wave probe synchronous movement assembly and the hole wall of the borehole in the highly permeable water area.

[0032] Furthermore, the borehole acoustic testing device for the strong water penetration area further includes an acoustic probe data transmission line 20 and a water pipe 16. The acoustic probe data transmission line 20 includes an upper acoustic probe data transmission line and a lower acoustic probe data transmission line; the coupling agent-acoustic probe synchronous movement assembly includes a polypropylene film bag 5, a sealing cover 6, an acoustic probe 7, a hollow male-female screw male end 11, and a hollow male-female screw female end 12. One end of the open end of the sealing cover 6 is connected to one end of the hollow male-female screw female end 12, and the two are integrally cast; the cavity of the polypropylene film bag 5 is provided with an acoustic probe 7, and one end of the open end is connected to one end of the hollow male-female screw male end 11. One end of the lower acoustic probe data transmission line is connected to the acoustic probe 7, and the other end of the lower acoustic probe data transmission line leads out a waterproof plug female end 23; one end of the upper acoustic probe data transmission line leads out and is connected to a waterproof plug male end 22 connected to the waterproof plug female end 23, and the other end of the upper acoustic probe data transmission line extends out from the side of the sealing cover 6 away from the open end for connecting the data acquisition device; the hollow male-female screw male end 11 and the hollow male-female screw female end 12 are connected to form a receiving cavity for receiving the waterproof plug male end 22 and the waterproof plug female end 23; one end of the water pipe 16 extends into the sealing cover 6, and the other end of the water pipe 16 is used for communicating with the water supply device. Furthermore, the upper acoustic probe data transmission line can be extended by means of an adapter or the like, so as to facilitate the traction of the coupling agent-acoustic probe synchronous movement assembly to the required measuring point. Or the upper acoustic probe data transmission line can also be a preset-length upper acoustic probe data transmission line, and a wire winding device is further used for winding and unwinding the wire.

[0033] Furthermore, the wall thickness of the polypropylene film bag 5 needs to satisfy h < λ, where h is the wall thickness and λ is the acoustic wavelength. The wall thickness of the polypropylene film bag used in the present invention is about 0.2 mm to 1 mm, and the acoustic wavelength is generally between 17 mm and 17000 mm. And the polypropylene film bag 5 is connected to the hollow male-female screw male end 11 by a heat fusion method at the heat fusion contact area 24 between the hollow male-female screw male end and the polypropylene film bag.

[0034] Further, on one side of the sealing cover 6 away from the opening end, there are two sealing plugs 13 and an exhaust valve 15; one sealing plug 13 is for the water pipe 16 to pass through, and one sealing plug 13 is for the data transmission line of the upper acoustic probe to pass through. Specifically, a wire routing hole 14 is provided in the middle of the sealing plug 13, and the wire routing hole 14 of one sealing plug 13 is connected to the water pipe 16 through sealant; the wire routing hole 14 of the other sealing plug 13 is connected to the data transmission line 20 of the upper acoustic probe through sealant. Further, the exhaust valve 15 is threadedly connected to the sealing cover 6; the sealing plug 13 is connected to the sealing cover 6 through sealant. Applying the above technical solution, it can be seen that in the present invention, the exhaust valve 15 is placed on the sealing cover 6, which can avoid the deficiency that the wires are easily entangled due to connecting the exhaust valve 15 to the ground through a pipeline.

[0035] Further, the data acquisition device uses an acoustic wave main unit 21.

[0036] Further, the water supply device includes a water press 17 and a pressure gauge 18 and a pressure relief valve 19 provided on the water pipe 16 connected to the water press 17.

[0037] Further, the acoustic probe 7 is composed of a transmitting module 8, a No. 1 receiving module 9, and a No. 2 receiving module 10.

[0038] According to the second aspect of the embodiments of the present invention, a method for using a borehole acoustic wave testing device in a strongly permeable water area is provided, including: placing the hole wall lubrication assembly 1 at the position of the borehole opening, injecting mud into the borehole in the strongly permeable water area according to the hole wall lubrication assembly 1 to lubricate the hole wall; moving the hole wall lubrication assembly 1 out of the borehole opening; connecting the coupling agent-acoustic probe synchronous moving assembly to the water supply device through the water pipe 16; injecting water into the polypropylene film bag 5 of the coupling agent-acoustic probe synchronous moving assembly through the water supply device until water evenly flows out of the exhaust hole of the exhaust valve 15 in the coupling agent-acoustic probe synchronous moving assembly, closing the exhaust valve 15, and placing the assembled coupling agent-acoustic probe synchronous moving assembly into the borehole section to be measured; continuing to use the water supply device to inject water into the polypropylene film bag 5 until the polypropylene film bag 5 contacts the hole wall; connecting the coupling agent-acoustic probe synchronous moving assembly to the data acquisition device through the upper acoustic probe data transmission line, starting the acoustic wave main unit 21 and completing the acquisition of borehole acoustic wave data at this depth.

[0039] Further, the present invention can test different measurement points of the borehole. The following provides an optional specific implementation process:

[0040] When conducting borehole acoustic testing, place the mud funnel 1 at the orifice of the borehole, pour the prepared mud into the mud funnel 1, and the mud flows along the funnel guiding wall 3 under the action of the guiding column 2 towards the borehole wall. Move the mud funnel 1 away from the orifice, put the acoustic probe 7 connected to the lower acoustic data transmission line into the polypropylene film bag 5, connect the female end 23 of the waterproof plug and the male end 22 of the waterproof plug, dock and tighten the male end 11 of the hollow male-female screw with the female end 12 of the hollow male-female screw to combine the sealing cover 6 with the polypropylene film bag 5. Open the exhaust valve 15, connect the water pipe 16 to the water press 17, unscrew the pressure relief valve 19, and inject water into the polypropylene film bag 5 through the water press 17 until water evenly flows out from the exhaust hole of the exhaust valve 15. Then close the exhaust valve 15 and place the assembled device into the section of the borehole to be measured. Continue to use the water press 17 to inject water into the polypropylene film bag 5 and observe the pressure change of the pressure gauge 18. After the pressure meets the requirements, close the pressure relief valve 19, make the polypropylene film bag 5 contact with the borehole wall, connect the upper acoustic data transmission line to the acoustic host 21, start the acoustic host 21 and complete the acquisition of borehole acoustic data at this depth (that is, operate the relevant operation buttons of the acoustic host 21 to make the transmitting module 8 in the acoustic probe 7 generate an acoustic signal of a certain frequency, and the acoustic host 21 automatically records the passive acoustic signal data recorded in the No. 1 receiving module 9 and the No. 2 receiving module 10. According to the time difference of the acoustic first arrivals between the two receiving modules and the distance between the two receiving modules, calculate the acoustic velocity value of the borehole wall rock mass); after the data acquisition at this point is completed, unscrew the pressure relief valve 19 to separate the polypropylene film bag 5 from the borehole wall, adjust the polypropylene film bag 5 to the next measuring point position in the borehole by pulling and moving the acoustic data transmission line 20, continue to use the water press 17 to inject water into the polypropylene film bag 5 and observe the pressure change of the pressure gauge 18. After the pressure meets the requirements, tighten the pressure relief valve 19, start the acoustic host 21 and complete the acquisition of borehole acoustic data at this depth. Repeat the operations of pressure relief, adjusting the position of the film bag 5 in the borehole and water injection to complete the borehole acoustic testing at different measuring points.

[0041] Figure 13 For the borehole acoustic data curve collected by the method of injecting water while collecting in the borehole in a strongly permeable water area without using the present invention (the water injection flow rate is 50 L / min), as can be seen from the figure, when the water injection flow rate is too large, the first arrival wave of the acoustic data curve cannot be recognized, the waveform data is chaotic, and the data is unavailable. Figure 14 For the waveform diagram of the acoustic data collected in the borehole in a strongly permeable water area by using the present invention, as can be seen from the figure, the waveform data collected in the borehole in a strongly permeable water area by the present invention has strong regularity, the first arrival wave is clear, and the measurement result of the longitudinal wave velocity of the borehole rock mass is accurate and reliable. It effectively avoids the problem that the acoustic testing cannot be carried out due to the loss of the coupling agent in the strongly permeable water area, and solves the difficult problem of quantitatively evaluating the physical and mechanical parameters, the integrity degree and the weathering degree of the rock mass in the strongly permeable water area.

[0042] The specific embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the scope of knowledge possessed by those of ordinary skill in the art.

Claims

1. A borehole acoustic testing device for a highly permeable water area, characterized in that It includes a hole wall lubrication component (1), a couplant - acoustic wave probe synchronous movement component, a water supply device, and a data acquisition device; the hole wall lubrication component (1) is used to inject mud into the borehole in the highly permeable water area to lubricate the hole wall; the couplant - acoustic wave probe synchronous movement component is used to extend into the borehole in the highly permeable water area and is used to connect the water supply device and the data acquisition device located outside the borehole in the highly permeable water area. The water supply component is used to inject water into the couplant - acoustic wave probe synchronous movement component, and the data acquisition device is used to acquire the acoustic wave signals collected by the couplant - acoustic wave probe synchronous movement component; The hole wall lubrication component (1) includes a guide post (2), a diversion wall (3), and a connecting post (4). The diversion wall (3) is provided with an inlet and an outlet, and the inlet is larger than the outlet. A hollow cylindrical straight-through is provided on the outlet side; the guide post (2) embedded in the hollow cylindrical straight-through is connected to the inner wall of the hollow cylindrical straight-through through the connecting post (4), and the tip of the guide post (2) extends out from the outlet side of the diversion wall (3); It also includes an acoustic wave probe data transmission line (20) and a water pipe (16). The acoustic wave probe data transmission line (20) includes an upper acoustic wave probe data transmission line and a lower acoustic wave probe data transmission line; the couplant - acoustic wave probe synchronous movement component includes a polypropylene film bag (5), a sealing cover (6), an acoustic wave probe (7), a hollow male - female screw male end (11), and a hollow male - female screw female end (12). The open end of the sealing cover (6) is connected to one end of the hollow male - female screw female end (12); an acoustic wave probe (7) is provided in the cavity of the polypropylene film bag (5), and the open end is connected to one end of the hollow male - female screw male end (11). One end of the lower acoustic wave probe data transmission line is connected to the acoustic wave probe (7), and the other end of the lower acoustic wave probe data transmission line leads out a waterproof plug female end (23); one end of the upper acoustic wave probe data transmission line leads out a waterproof plug male end (22) connected to the waterproof plug female end (23), and the other end of the upper acoustic wave probe data transmission line extends out from the side of the sealing cover (6) far away from the open end for connecting the data acquisition device; The hollow male - female screw male end (11) and the hollow male - female screw female end (12) are connected to form a receiving cavity for receiving the waterproof plug male end (22) and the waterproof plug female end (23); one end of the water pipe (16) extends into the sealing cover (6), and the other end of the water pipe (16) is used to communicate with the water supply device; The thickness of the polypropylene film bag wall needs to satisfy h < λ, where h is the wall thickness and λ is the acoustic wave wavelength; The wall thickness is 0.2 mm to 1 mm, and the acoustic wave wavelength is between 17 mm and 17000 mm.

2. The borehole acoustic testing device for a highly permeable water area according to claim 1, characterized in that, Two sealing plugs (13) and an exhaust valve (15) are provided on the side of the sealing cover (6) far away from the open end; one sealing plug (13) is for the water pipe (16) to pass through, and one sealing plug (13) is for the upper acoustic wave probe data transmission line to pass through.

3. The borehole acoustic wave testing device for a strong water penetration area according to claim 1, characterized in that, The water supply device includes a water pressure pump (17) and a pressure gauge (18) and a pressure relief valve (19) provided on the water pipe (16) connected to the water pressure pump (17).

4. A method for using the borehole acoustic testing device for a strong permeable water area according to any one of claims 1-3, characterized in that, It includes: Place the hole wall lubrication component (1) at the position of the drilling hole opening, and inject mud into the drilling hole in the strong water penetration area according to the hole wall lubrication component (1) to lubricate the hole wall; Remove the hole wall lubrication component (1) from the drilling hole opening; Connect the couplant-acoustic probe synchronous movement component to the water supply equipment through the water pipe (16); inject water into the polypropylene film bag (5) of the couplant-acoustic probe synchronous movement component through the water supply equipment until water evenly flows out of the exhaust hole of the exhaust valve (15) in the couplant-acoustic probe synchronous movement component, close the exhaust valve (15), and place the assembled couplant-acoustic probe synchronous movement component into the drilling hole section to be measured; continue to use the water supply equipment to inject water into the polypropylene film bag (5) until the polypropylene film bag (5) contacts the hole wall; Connect the couplant-acoustic probe synchronous movement component to the data acquisition equipment through the upper acoustic probe data transmission line, start the acoustic wave main machine (21) and complete the acquisition of the acoustic wave data of the drilling hole at this depth.

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