A water-conducting fissure zone testing device and method

Abstract

The present invention provides a water-conducting fissure zone testing device and method, which relates to the field of fissure zone detection. Aiming at the problem that it is impossible to comprehensively obtain images when testing the water-conducting fissure zone at present, a pneumatic motor and a camera are installed inside the device. The pneumatic motor is driven by the air pressure acting on the airbag during plugging. Before reaching the set air pressure value, the air pipe only drives the airbag to expand. After reaching the set air pressure value, the air flow pressure output by the air pipe drives the pneumatic motor to drive the camera to rotate to adjust the shooting angle, so that images at different shooting angles can be obtained even without using the camera, meeting the test requirements of the water-conducting fissure zone.

Description

Technical Field

[0001] The present invention relates to the field of fissure zone detection, and particularly to a water-conducting fissure zone testing device and method. Background Art

[0002] With the advancement of underground working faces and frequent engineering disturbances, there are not only a large number of hidden primary fissures in the surrounding rock. At the same time, deep boreholes are in a complex engineering environment of high ground pressure and strong disturbances, which easily cause fissures in the borehole surrounding rock. The occurrence of fissures in rock masses has great randomness, and the method of measuring water leakage by water injection is often used to detect the development degree of borehole fissures, that is, drilling holes at a certain distance from the borehole surrounding rock through a drill rig, selecting a certain length section of the closed borehole and injecting water into it. The water penetrates into the fissure channels. By controlling the water injection pressure and measuring the water injection volume, it is judged whether the water injection reaches saturation. According to the actual water injection volume at saturation, that is, the leakage volume, the size of the fissure space in the borehole surrounding rock is judged, so as to obtain the development degree of the fissures.

[0003] Chinese Patent (Publication No.: CN118346251A) discloses a screw-driven borehole surrounding rock fissure detection robot and detection method. After using an airbag for plugging and then injecting water, water flow information is measured, which can preliminarily detect the general situation in the borehole, improve the detection efficiency, and use an imager to obtain the fissure development characteristics of the borehole surrounding rock in the plugging section, so as to detect the specific position and size of the fissures at specific positions; multiple groups of cameras are arranged on the outer periphery of the front part of the front airbag installation part to collect image information in the borehole, meeting the detection requirements for specific positions; since the airbag has been clamped with the borehole wall after inflation, it is difficult for the inner and outer drive rods to rotate, resulting in inconvenient adjustment of the shooting angle of the camera, and it is difficult to further increase the number of cameras in a narrow space, resulting in only obtaining local water-conducting fissure zone information and being difficult to adjust the shooting angle as needed. Summary of the Invention

[0004] The purpose of the present invention is to address the deficiencies existing in the prior art, and provide a water-conducting fissure zone testing device and method. An air motor and a camera are installed inside the device. The air pressure acting on the airbag during plugging is used to drive the air motor. Before reaching the set air pressure value, the air pipe only drives the airbag to expand. After reaching the set air pressure value, the air pressure output by the air pipe drives the air motor to drive the camera to rotate to adjust the shooting angle, so that different shooting angle images can be obtained with fewer cameras used, meeting the testing requirements of the water-conducting fissure zone.

[0005] The first object of the present invention is to provide a water-conducting fissure zone testing device, adopting the following scheme:

[0006] A plugging device, comprising a base body and an airbag. The airbag is sleeved outside the base body, and an air chamber communicating with the airbag through an air outlet hole is formed inside the base body. The air chamber is communicated with an air pipe;

[0007] A leakage test assembly, comprising a test tube, a water cavity communicating with a water pipe is formed inside the test tube, water outlet holes are provided on the tube wall of the test tube, and plugging devices are respectively connected to both ends of the test tube;

[0008] An image acquisition assembly is installed inside the test tube and on at least one plugging device. The image acquisition assembly includes a pneumatic motor and a camera. The air inlet of the pneumatic motor is communicated with an air pipe through a pressure limiting valve, and the output end of the pneumatic motor is connected to the camera to drive the camera to rotate and adjust the imaging angle.

[0009] Further, circumferentially distributed windows are provided inside the test tube, and the camera located inside the test tube rotates relative to the axis of the test tube along the windows.

[0010] Further, a protective cover is installed at the front end of the plugging device on which the image acquisition assembly is installed. The image acquisition assembly is installed inside the protective cover. The protective cover is provided with circumferentially distributed windows, and the camera located inside the protective cover rotates relative to the axis of the protective cover along the windows.

[0011] Further, the air pipe sequentially passes through the plugging device at one end of the test tube and the test tube and then accesses the plugging device at the other end of the test tube. The pressure limiting valve of the pneumatic motor installed on the plugging device is communicated with the air pipe through an air cavity.

[0012] Further, both ends of the test tube are respectively connected to the plugging devices through connectors. The connectors are provided with ball joints, enabling both ends of the connectors to swing relative to the ball joints, and the air pipe and the water pipe can pass through the ball joints.

[0013] Further, the base body of the plugging device is a plugging tube, an airbag is sleeved outside the plugging tube, and the airbag expands or contracts radially along the plugging tube under the drive of the internal pressure of the air cavity.

[0014] Further, the water pipe passes through the plugging device connected to one end of the test tube and then communicates with the water cavity. The water pipe and the air pipe are arranged in parallel. The water pipe accesses an external pressure water source, and the air pipe accesses an external pressure air source.

[0015] Further, an image acquisition assembly is installed on the plugging device connected to one end of the test tube, and a drill pipe joint is provided on the plugging device connected to the other end.

[0016] The second object of the present invention is to provide a test method for a water-conducting fracture zone test device as described in the first object, including:

[0017] The water pipe accesses a pressure water source, the air pipe accesses a pressure air source, and the plugging device at one end of the test tube, the test tube, and the plugging device at the other end of the test tube are sequentially placed into the drill hole;

[0018] During the placement process, the image inside the drill hole is acquired by using the image acquisition assembly installed on the plugging device to assist in the placement;

[0019] Pressurize the air cavity through the air pipe to drive the expansion of the airbags of the plugging devices connected to both ends of the test pipe, plug the boreholes at the positions where the airbags are located, and form a test area between the two plugging devices;

[0020] Control the air pipe pressure to trigger the pressure-limiting valve to open it. The pneumatic motor drives the camera to rotate and adjust the shooting angle, obtains the images in the test area and transmits them back;

[0021] Inject water into the water cavity through the water pipe and discharge it from the water outlet holes. When the test area is full of water and the flow rate is stable, record the water injection parameters;

[0022] Release the pressure of the air cavity and the airbags to make the airbags contract, and extract the water-conducting fissure zone test device.

[0023] Furthermore, by adjusting the air pipe pressure, the camera is adjusted to the required angle, and during the water injection of the water pipe, the airbags are kept inflated to plug the boreholes.

[0024] Compared with the prior art, the advantages and positive effects of the present invention are:

[0025] (1) Aiming at the problem that it is impossible to comprehensively obtain images when testing the water-conducting fissure zone at present, a pneumatic motor and a camera are installed inside the device. The pneumatic motor is driven by the air pressure acting on the airbags during plugging. Before reaching the set air pressure value, the air pipe only drives the airbags to expand. After reaching the set air pressure value, the air flow pressure output by the air pipe drives the pneumatic motor to drive the camera to rotate to adjust the shooting angle, and images at different shooting angles can be obtained even without using the camera, meeting the test requirements of the water-conducting fissure zone; a pressure valve is installed for the pneumatic motor. The pressure valve serves as the start-stop switch of the pneumatic motor. By controlling the pressure output by the air pipe to trigger the pressure valve, the start and stop of the motor are controlled by air pressure, so that the air flow output by the air pipe serves as both the power source of the pneumatic motor and the start-stop control, reducing the complexity of the equipment.

[0026] (2) Adopt a three-section structure, and spherical connectors are used to connect adjacent sections. There is a bending deformation amount between adjacent sections to adapt to the bending of the borehole during the installation process and improve the installation convenience.

[0027] (3) Cameras are respectively installed at the front end and the middle section of the device to respectively obtain the borehole distribution situation at the front end of the device and the progress of the water injection test, and at the same time realize the leakage volume test and the borehole peep observation, realizing visual operation and improving the operation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The specification drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention.

[0029] Figure 1Schematic diagram of the water-conducting fissure zone testing device in Embodiments 1 and 2 of the present invention.

[0030] Figure 2 Schematic diagram of the inflated airbag of the water-conducting fissure zone testing device in Embodiments 1 and 2 of the present invention.

[0031] Among them, 1. First plugging device, 2. Leakage test component, 3. Second plugging device, 4. Protective cover, 5. Pneumatic motor, 6. Camera, 7. Airbag, 8. Clamp, 9. Air chamber, 10. Air outlet hole, 11. Air pipe, 12. First connector, 13. Water pipe, 14. Water outlet hole, 15. Second connector, 16. Drill pipe joint. Detailed implementation manners

[0032] Embodiment 1

[0033] In a typical embodiment of the present invention, as Figure 1 - Figure 2 shown, a water-conducting fissure zone testing device is provided.

[0034] Currently, when the existing fissure detection equipment is working, it can only obtain images at fixed positions and it is difficult to comprehensively obtain the distribution in the fissure zone. Moreover, adding camera elements will increase the volume of the equipment and it is difficult to be applicable to the borehole working environment. Based on this, this embodiment provides a water-conducting fissure zone testing device, which uses the combination of the base body and the airbag 7 to achieve the plugging of the borehole, and an image acquisition component is installed on the base body and the test pipe. The camera 6 of the image acquisition component is driven by the pneumatic motor 5, and the pneumatic motor 5 is connected to a pressure limiting valve for control, and can perform work after reaching the set air pressure, so as to realize the adjustment of the angular position where the camera 6 is located and meet the need to obtain images at different angles.

[0035] As Figure 1 shown, the water-conducting fissure zone testing device mainly includes plugging devices, a leakage test component 2 and an image acquisition component. The water-conducting fissure zone testing device is a three-section structure as a whole. The leakage test component 2 is located in the middle section, and plugging devices are respectively connected to both ends of it. The airbag 7 of the plugging device can be inflated and expanded to fill the borehole at the position where the plugging device is located, so as to achieve plugging. After the two plugging devices respectively plug the boreholes at their respective positions, the borehole section between the two plugging devices forms a test area. The leakage test component 2 is located in this test area. By injecting water into the leakage test component 2 and discharging the water, the leakage volume is observed and the numerical value is recorded to realize the leakage volume test process.

[0036] As Figure 2As shown in the figure, the plugging device includes a matrix and an airbag 7. The matrix serves as the main structure of the plugging device and provides support for the airbag 7. The airbag 7 is sleeved outside the matrix and is inflated through the air chamber 9 inside the matrix. It is used to plug the drill holes outside both ends of the test tube to form a closed water test environment. The air chamber 9 is formed inside the matrix and is connected to the airbag 7 through the air outlet hole 10, and is used to transmit air pressure to drive the airbag 7 to expand. The air pipe 11 is connected to the air chamber 9 and an external pressure air source, and is used to deliver gas into the air chamber 9.

[0037] In this embodiment, the airbag 7 can adopt a rubber material bladder structure, which can achieve elastic expansion and contraction. It is sleeved outside the matrix and is isolated from the outside world. It is connected to the air chamber 9 through the air outlet hole 10 to obtain air flow to drive the airbag 7 to expand. The external pressure air source can adopt an air pump, a pressure gas cylinder, etc. The air pipe 11 can adopt a flexible pipe.

[0038] The plugging device realizes the plugging of the drill holes outside both ends of the test tube through the expansion of the airbag 7, ensuring that when the leakage test is carried out, after the water in the test tube is discharged into the test area, it will not flow axially along the drill hole to other positions, forming a closed test environment. The plugging device has a simple structure and is easy to operate. Moreover, the elastic design of the airbag 7 can adapt to drill holes of different diameters, improving the versatility of the device.

[0039] The main structure of the leakage test assembly 2 is a test tube. A water chamber communicating with the water pipe 13 is formed inside the test tube, and is used to accommodate and transmit the test water. The water outlet hole 14 is arranged on the tube wall of the test tube, and is used to discharge the water body injected into the water chamber by the water pipe 13 into the formed test area to observe the water leakage situation.

[0040] The plugging device is connected to both ends of the test tube to ensure the sealing of the test area during the test. The leakage test assembly 2 can simulate the actual situation of the water-conducting fractured zone through the design of the test tube and the water outlet hole 14, and test the water leakage situation.

[0041] As Figure 2 shown in the figure, the image acquisition assembly is installed inside the test tube and on at least one plugging device. The image acquisition assembly includes a pneumatic motor 5 and a camera 6. The pneumatic motor 5 is connected to the air pipe 11 through a pressure limiting valve. When the air pressure reaches the set value, it drives the motor to rotate. The camera 6 is connected to the output end of the pneumatic motor 5 and is rotated by the motor to adjust the shooting angle. The pressure limiting valve is arranged at the air inlet of the pneumatic motor 5 and is used to control the air pressure to ensure that the pneumatic motor 5 will not start before reaching the set air pressure value. Similarly, when the air pressure value drops below the set air pressure value, the pressure limiting valve closes and the pneumatic motor 5 stops running.

[0042] The image acquisition assembly realizes the acquisition of images at different shooting angles during the test through the combination of the pneumatic motor 5 and the camera 6, without manually adjusting the position of the camera 6, improving the test efficiency and safety.

[0043] In this embodiment, the set air pressure value for triggering the pressure relief valve can be 0.5 MPa, and the pressure resistance value of the airbag 7 is greater than 1 MPa. The air pipe 11 inflates the airbag 7 to make it expand. During this process, the inflation pressure is controlled to be less than 0.4 MPa. When the position of the camera 6 needs to be adjusted, the air pressure in the air pipe 11 is controlled to be greater than 0.5 MPa and less than the maximum pressure resistance value of the airbag 7, thereby triggering the pressure relief valve, and the air flow conveyed by the air pipe 11 is used to drive the pneumatic motor 5 to operate, driving the camera 6 to adjust its orientation. In other alternative embodiments, the triggering pressure of the pressure relief valve can be selected as other values, such as 0.45 MPa, 0.6 MPa, etc., and the triggering pressure is controlled to be less than the maximum pressure resistance value of the airbag 7. The design of the pressure relief valve ensures that the pneumatic motor 5 starts only after reaching the set air pressure value, realizes the control of whether the pneumatic motor 5 operates, and uses a single air pipe 11 to realize the control process of the expansion and contraction of the airbag 7 and the start and stop of the pneumatic motor 5.

[0044] The installation position of the image acquisition component is flexible and can be installed inside the test pipe or on the plug, and can be adjusted according to actual needs, improving the flexibility and applicability of the device.

[0045] As Figure 1 shown, the inside of the test pipe is provided with circumferentially distributed windows, providing a shooting window for the camera 6, and the window positions are made of transparent materials. The camera 6 rotates around the window relative to the axis of the test pipe. Through the window, the development of cracks can be observed in real time. When reaching the predetermined location, the supply air pressure of the air pipe 11 is adjusted to close the pressure relief valve and stop the pneumatic motor 5 from rotating. The influence of various angles outside the test pipe can be obtained through the window, and the leakage test process can be observed.

[0046] The circumferentially distributed window design enables the camera 6 to comprehensively shoot the inside of the test pipe, improving the comprehensiveness and accuracy of the test. The camera 6 rotates along the axis of the test pipe, and can flexibly adjust the shooting angle to meet different test requirements.

[0047] As Figure 2 shown, a protective cover 4 is installed at the front end of the plug on which the image acquisition component is installed to protect the camera 6 from external environmental interference. The protective cover 4 is provided with circumferentially distributed windows, and the camera 6 rotates around the window relative to the axis of the protective cover 4 inside the protective cover 4.

[0048] The design of the protective cover 4 protects the camera 6, extends its service life, and at the same time prevents the influence of impurities or water mist that may be generated during the test on the camera 6. The circumferentially distributed windows and the rotation design of the camera 6 enable the camera 6 to flexibly adjust the shooting angle inside the protective cover 4, ensuring that the required image is captured, and assisting the entire process of inserting and removing the test device into and out of the drill hole.

[0049] Regarding the arrangement of the air pipe 11, as Figure 2As shown, one end of the leakage test assembly 2 is connected to the first plugging device 1, and the other end is connected to the second plugging device 3. The image acquisition assembly is installed on the first plugging device 1. The air pipe 11 passes through the second plugging device 3 at one end of the test pipe, then passes through the test pipe and is connected to the first plugging device 1 at the other end of the test pipe. The pressure limiting valve of the pneumatic motor 5 installed on the plugging device is connected to the air pipe 11 through the air cavity 9 to ensure the stable transmission of air pressure.

[0050] The design of the air pipe 11 enables the pneumatic motor 5 to receive stable air pressure drive. The pneumatic motor 5 installed in the test pipe is connected to the air pipe 11 through the pressure limiting valve at the section where the air pipe 11 passes through the test pipe, so that all the pneumatic motors 5 can respectively obtain the driving air flow from the air pipe 11, ensuring the normal operation of the camera 6. The design of the air pipe 11 passing through the test pipe and the plugging device simplifies the structure of the device and improves the reliability and stability of the device.

[0051] As Figure 1 shown, both ends of the test pipe are respectively connected to the plugging devices through connectors. In this embodiment, one end of the test pipe is connected to the first plugging device 1 through the first connector 12, and the other end of the test pipe is connected to the second plugging device 3 through the second connector 15. Ball joints are provided on both the first connector 12 and the second connector 15.

[0052] The ball joint enables both ends of the connector to swing relative to the ball joint, and the air pipe 11 and the water pipe 13 can pass through the ball joint. Specifically, the water pipe 13 extends to the position of the test pipe. Therefore, the water pipe 13 and the air pipe 11 respectively pass through the second connector 15, and the air pipe 11 continues to pass through the first connector 12 after passing through the test pipe, and then enters the air cavity 9 of the first plugging device 1.

[0053] The design of the ball joint enables the connector to flexibly adjust the angle and has a certain bending deformation amount. During the installation process into the drill hole, it can be adjusted within a certain range according to the curvature of the drill hole, which is beneficial for installation and adapts to different test environments and test requirements. The air pipe 11 and the water pipe 13 can pass through the ball joint, ensuring the stable transmission of air pressure and water during the test process.

[0054] The base of the plugging device is designed as a plugging pipe, and the airbag 7 is sleeved outside the plugging pipe. The airbag 7 is of a cylindrical structure, and both ends are respectively fixed on the plugging pipe through clamps 8. A protective cover 4 is sleeved outside the clamp 8. The part between the clamps 8 at both ends of the airbag 7 can expand and contract. The airbag 7 expands or contracts radially along the plugging pipe under the drive of the internal pressure of the air cavity 9.

[0055] The plugging pipe serves as the skeleton support structure inside the airbag 7, making the plugging device more durable and able to withstand greater water pressure and air pressure. The airbag 7 expands or contracts radially along the plugging pipe under the drive of the internal pressure of the air cavity 9, ensuring the sealing performance of the plugging device.

[0056] The water pipe 13 passes through the plugging device connected to one end of the test pipe and is connected to the water cavity. The water pipe 13 and the air pipe 11 are arranged in parallel. The water pipe 13 is connected to an external pressure water source, and the air pipe 11 is connected to an external pressure air source. The parallel arrangement of the water pipe 13 and the air pipe 11 simplifies the structure of the device, improves the compactness and aesthetics of the device. The water pipe 13 and the air pipe 11 are respectively connected to an external pressure water source and an air source, ensuring the stable supply of water and air pressure during the test.

[0057] An image acquisition component is installed on the first plugging device 1 connected to one end of the test pipe, which is used as the front-end structure of the entire device. It enters the drill hole first when being inserted into the drill hole, and can capture the internal situation of the drill hole in real time during the test, improving the accuracy and reliability of the test. And the image acquisition component on it is used to obtain the image during the process of inserting into the drill hole, assisting the processes of inserting into and removing from the drill hole.

[0058] A drill pipe joint 16 is provided on the plugging device connected to the other end of the test pipe. The setting of the drill pipe joint 16 enables the test device to be conveniently connected to the drill pipe for deeper testing or sampling work. The water-conducting fissure zone test device improves the comprehensiveness and accuracy of the test, simplifies the structure of the device, improves the reliability and stability of the device, and at the same time meets the requirements of different test needs and environmental conditions.

[0059] In this embodiment, both the air pipe 11 and the water pipe 13 are flexible pipes, which can adapt to the bending deformation amount between the leakage test component 2 and the plugging device, and keep the water pipe 13 and the air pipe 11 unobstructed.

[0060] Embodiment 2

[0061] In another typical embodiment of the present invention, as Figure 1 - Figure 2 shown, a test method for a water-conducting fissure zone test device is given, using the water-conducting fissure zone test device as in Embodiment 1.

[0062] A test method for a water-conducting fissure zone test device includes:

[0063] The water pipe 13 is connected to a pressure water source, and the air pipe 11 is connected to a pressure air source. The plugging device at one end of the test pipe, the test pipe, and the plugging device at the other end of the test pipe are sequentially inserted into the drill hole;

[0064] During the insertion process, the image inside the drill hole is obtained by using the image acquisition component installed on the plugging device to assist the insertion;

[0065] The air cavity 9 is pressurized through the air pipe 11 to drive the air bags 7 of the plugging devices connected to both ends of the test pipe to expand, sealing the drill hole at the positions where the air bags 7 are located, and forming a test area between the two plugging devices;

[0066] Control the pressure of the air pipe 11 to trigger the pressure-limiting valve to open the pressure-limiting valve. The pneumatic motor 5 drives the camera 6 to rotate to adjust the shooting angle, obtains the image in the test area and transmits it back;

[0067] The water pipe 13 injects water into the water cavity and discharges it from the water outlet hole 14. When the test area is full of water and the flow rate is stable, record the water injection parameters;

[0068] Release the pressure of the air cavity 9 and the airbag 7 to make the airbag 7 contract, and extract the water-conducting fracture zone test device.

[0069] Among them, by adjusting the pressure of the air pipe 11, the camera 6 is adjusted to the required angle. During the water injection of the water pipe 13, the airbag 7 is kept inflated to seal the borehole.

[0070] Install the pneumatic motor 5 and the camera 6 inside the device. Use the air pressure acting on the airbag 7 during plugging to drive the pneumatic motor 5. Before reaching the set air pressure value, the air pipe 11 only drives the airbag 7 to expand. After reaching the set air pressure value, the air flow pressure output by the air pipe 11 drives the pneumatic motor 5 to drive the camera 6 to rotate to adjust the shooting angle. Images at different shooting angles can be obtained without using the camera 6, meeting the test requirements of the water-conducting fracture zone; install a pressure valve for the pneumatic motor 5. The pressure valve serves as the start-stop switch of the pneumatic motor 5. By controlling the pressure output by the air pipe 11 to trigger the pressure valve, the start and stop of the motor are controlled by air pressure, so that the air flow output by the air pipe 11 serves as both the power source of the pneumatic motor 5 and the start-stop control, reducing the complexity of the equipment.

[0071] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A water-conducting fracture zone testing device, characterized in that: include: The occluder comprises a base and an air bag, wherein the air bag is sleeved outside the base, and an air cavity is formed inside the base and connected to the air bag through an air outlet, and the air cavity is connected to the trachea; The leakage test assembly comprises a test tube, a water cavity connected to a water pipe is formed in the test tube, a water outlet hole is arranged on the tube wall of the test tube, and plugging devices are respectively connected to both ends of the test tube; An image acquisition component is installed in the test tube and on at least one occluder. The image acquisition component includes a pneumatic motor and a camera. The air inlet of the pneumatic motor is connected to the air pipe through a pressure limiting valve. The output end of the pneumatic motor is connected to the camera to drive the camera to rotate and adjust the camera angle. The base of the occluder is an occluding tube, and the airbag is sleeved outside the occluding tube. The airbag expands or contracts along the radial direction of the occluding tube under the driving force of the internal pressure of the air cavity; The water pipe passes through the plug connected to one end of the test tube and is connected to the water cavity. The water pipe and the air pipe are arranged in parallel. The water pipe is connected to an external pressure water source, and the air pipe is connected to an external pressure air source. An image acquisition component is installed on the occluder connected to one end of the test tube, and a drill rod joint is provided on the occluder connected to the other end; a three-section structure is adopted, and spherical connectors are used to connect adjacent sections. There is bending deformation between adjacent sections to adapt to the bending of the drill hole during installation.

2. The water-conducting fracture zone testing device according to claim 1, characterized in that: The test tube is provided with circumferentially distributed viewing windows, and the camera located in the test tube rotates along the viewing windows relative to the axis of the test tube.

3. The water-conducting fracture zone testing device according to claim 2, characterized in that: A protective cover is installed at the front end of the occluder equipped with an image acquisition component. The image acquisition component is installed in the protective cover. The protective cover is provided with circumferentially distributed viewing windows. The camera located in the protective cover rotates along the viewing window relative to the axis of the protective cover.

4. The water-conducting fracture zone testing device according to claim 3, characterized in that: The trachea passes through the occluder at one end of the test tube and the test tube in sequence and then is connected to the occluder at the other end of the test tube. The pressure limiting valve of the pneumatic motor installed on the occluder is connected to the trachea through the air cavity.

5. The water-conducting fracture zone testing device according to claim 1, characterized in that: The two ends of the test tube are connected to the occluder through connectors respectively. The connector is provided with a ball joint so that the two ends of the connector can swing relative to the ball joint, and the air pipe and the water pipe can pass through the ball joint.

6. A method for testing a water-conducting fracture zone testing device, using the water-conducting fracture zone testing device as claimed in any one of claims 1 to 5, characterized in that: include: The water pipe is connected to the pressure water source, the air pipe is connected to the pressure air source, and the plugging device at one end of the test tube, the test tube, and the plugging device at the other end of the test tube are sequentially placed into the borehole; During the insertion process, the image acquisition component installed on the occluder is used to obtain images inside the drill hole to assist the insertion; Pressurize the air cavity through the trachea to drive the air bags of the occluders connected to the two ends of the test tube to expand, block the drilled hole where the air bags are located, and form a test area between the two occluders; Control the air pipe pressure to trigger the pressure limiting valve to open it, and the pneumatic motor drives the camera to rotate and adjust the camera angle to obtain the image in the test area and transmit it back; The water pipe injects water into the water cavity and discharges it from the water outlet. When the test area is full of water and the flow rate is stable, record the water injection parameters; The air cavity and the air bag are depressurized to shrink the air bag, and the water-conducting fracture zone testing device is pulled out.

7. The testing method of the water-conducting fracture zone testing device according to claim 6, characterized in that: The camera is adjusted to the desired angle by adjusting the air pipe pressure, and the air bag is kept inflated to seal the drill hole while the water pipe is being filled with water.

Images