Water flowing fractured zone testing device and method

Abstract

The invention provides a water-flowing fractured zone testing device and method, relates to the field of fractured zone detection, and aims to solve the problem that images cannot be comprehensively obtained when a water-flowing fractured zone is tested at present, a pneumatic motor and a camera are installed in the device, the pneumatic motor is driven by using the air pressure effect of a driving air bag during plugging, and the camera is started before a set air pressure value is reached. The air pipe only drives the air bag to expand, after a set air pressure value is reached, airflow pressure output by the air pipe drives the pneumatic motor to drive the camera to rotate so as to adjust the shooting angle, images at different shooting angles can be obtained by reducing the use of the camera, and the test requirements of the water flowing fractured zone are met.

Description

Technical Field

[0001] The invention relates to the field of fracture zone detection, and in particular to a water-conducting fracture 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 cracks in the surrounding rock, but also deep boreholes are in a complex engineering environment with high ground pressure and strong disturbance, which can easily lead to cracks in the surrounding rock of the borehole. The occurrence of cracks in the rock mass is relatively random, and it is often necessary to use the method of water injection and leakage measurement to detect the development degree of borehole cracks, that is, drilling holes within a certain distance of the borehole surrounding rock through a drilling rig, selecting a certain length section of the closed borehole and injecting water into it, and water infiltrates into the crack channel. By controlling the injection pressure and measuring the injection volume, it is determined whether the injection has reached saturation. According to the actual injection volume when saturation is reached, that is, the leakage volume, the size of the crack space in the borehole surrounding rock is determined, thereby obtaining the development degree of the cracks.

[0003] A Chinese patent (publication number: CN118346251A) discloses a screw-driven drilling rock crack detection robot and detection method. It uses air bags to inject water after plugging and measures water flow information. It can preliminarily detect the general situation in the borehole, improve detection efficiency, and use an imager to obtain the development characteristics of the drilling rock cracks in the plugging section, so as to detect the specific position and size of the cracks at a specific position; a plurality of groups of cameras are arranged on the front periphery of the front air bag mounting part to collect image information in the borehole to meet the detection needs of a specific position; because the air bag is clamped with the borehole wall after expansion, the inner and outer drive rods are difficult to rotate, resulting in the inconvenience of adjusting the shooting angle of the camera, and it is difficult to further increase the number of cameras in a small space, resulting in only obtaining local water-conducting fracture zone information, and it is difficult to adjust the shooting angle on demand. Summary of the invention

[0004] The purpose of the present invention is to provide a water-conducting fracture zone testing device and method in response to the defects of the prior art. A pneumatic motor and a camera are installed inside the device, and the pneumatic motor is driven by the air pressure of the airbag during blocking. Before the set air pressure value is reached, the trachea only drives the airbag to expand. After the set air pressure value is reached, the air flow pressure output by the trachea drives the pneumatic motor to rotate the camera to adjust the shooting angle. This reduces the use of the camera and can also obtain images at different shooting angles, thereby meeting the testing needs of the water-conducting fracture zone.

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

[0006] 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;

[0007] 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;

[0008] The 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, and the output end of the pneumatic motor is connected to the camera to drive the camera to rotate and adjust the camera angle.

[0009] Furthermore, 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.

[0010] Furthermore, 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, and the protective cover is provided with circumferentially distributed windows. The camera located in the protective cover rotates along the window relative to the axis of the protective cover.

[0011] Furthermore, the trachea sequentially passes through the occluder at one end of the test tube and the test tube and is connected to the occluder at the other end of the test tube, and the pressure limiting valve of the pneumatic motor installed on the occluder is connected to the trachea through the air cavity.

[0012] Furthermore, both ends of the test tube are connected to the occluder through connectors respectively, and the connector is provided with a ball joint so that both 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.

[0013] Furthermore, the base of the occluder is an occluding tube, the airbag is sleeved outside the occluding tube, and the airbag expands or contracts along the radial direction of the occluding tube under the drive of the internal pressure of the air cavity.

[0014] Furthermore, the water pipe is connected to the water cavity after passing through the plug connected to one end of the test tube, and 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.

[0015] Furthermore, 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 of the test tube.

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

[0017] 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;

[0018] 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;

[0019] 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;

[0020] 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;

[0021] 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;

[0022] 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.

[0023] Furthermore, the camera is adjusted to a desired angle by adjusting the air pipe pressure, and the airbag is kept inflated to seal the drill hole during water injection into the water pipe.

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

[0025] (1) In order to solve the problem that it is currently impossible to obtain comprehensive images when testing water-conducting fracture zones, a pneumatic motor and a camera are installed inside the device. The pneumatic motor is driven by the air pressure of the airbag during plugging. Before the set air pressure value is reached, the air pipe only drives the airbag to expand. After the set air pressure value is reached, the air flow pressure output by the air pipe drives the pneumatic motor to drive the camera to rotate to adjust the shooting angle. The images at different shooting angles can be obtained while reducing the use of the camera, thereby meeting the testing requirements of water-conducting fracture zones. A pressure valve is installed for the pneumatic motor. The pressure valve serves as the start-stop switch of the pneumatic motor. The pressure valve is triggered by controlling the pressure output by the air pipe. The start-stop of the motor is 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, thereby reducing the complexity of the equipment.

[0026] (2) A three-section structure is adopted, and adjacent sections are connected by spherical connectors. There is bending deformation between adjacent sections to adapt to the bending of the drill hole during the installation process, thereby improving the convenience of installation.

[0027] (3) Cameras are installed at the front and middle sections of the device to obtain the distribution of drilling holes at the front of the device and the progress of the water injection test, respectively. At the same time, leakage test and drilling hole peek observation are carried out to achieve visual operation and improve operation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

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

[0030] Figure 2 It is a schematic diagram of the airbag of the water-conducting fracture zone testing device in Examples 1 and 2 of the present invention after expansion.

[0031] Among them, 1. the first occluder, 2. the leakage test assembly, 3. the second occluder, 4. the protective cover, 5. the pneumatic motor, 6. the camera, 7. the air bag, 8. the clamp, 9. the air cavity, 10. the air outlet, 11. the air pipe, 12. the first connector, 13. the water pipe, 14. the water outlet, 15. the second connector, and 16. the drill pipe joint. DETAILED DESCRIPTION

[0032] Example 1

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

[0034] When working, the current crack detection equipment can only obtain images at a fixed position, and it is difficult to fully obtain the distribution of the crack zone. Adding a camera element will increase the size of the equipment, making it difficult to adapt to the drilling working environment. Based on this, the present embodiment provides a water-conducting crack zone testing device, which uses a combination of a base and an airbag 7 to achieve the sealing of the borehole, and installs an image acquisition component on the base and the test tube. The camera 6 of the image acquisition component is driven by a pneumatic motor 5, and the pneumatic motor 5 is connected to a pressure-limiting valve for control. It can perform work after reaching the set air pressure, thereby realizing the adjustment of the angle position of the camera 6 to meet the needs of obtaining images at different angles.

[0035] like Figure 1 As shown, the water-conducting fracture zone test device mainly includes a plugger, a leakage test component 2 and an image acquisition component. The water-conducting fracture zone test device is a three-section structure as a whole. The leakage test component 2 is located in the middle section, and the two ends thereof are respectively connected to the pluggers. The airbag 7 of the plugger can be inflated to fill the borehole where the plugger is located to achieve plugging. After the two pluggers respectively plug the boreholes at their locations, the borehole segment between the two pluggers forms a test area, and the leakage test component 2 is located in this test area. By injecting water into the leakage test component 2 and draining the water, the leakage amount is observed and recorded to achieve the leakage amount test process.

[0036] like Figure 2As shown, the occluder includes a matrix and an airbag 7, wherein the matrix serves as the main structure of the occluder and provides support for the airbag 7. The airbag 7 is sleeved outside the matrix and is inflated through the air cavity 9 in the matrix to block the drilled holes outside the two ends of the test tube to form a closed water test environment. The air cavity 9 is formed in the matrix and is connected to the airbag 7 through the air outlet 10 to transmit air pressure to drive the airbag 7 to expand. The air pipe 11 connects the air cavity 9 and the external pressure gas source to deliver gas into the air cavity 9.

[0037] In this embodiment, the airbag 7 can be a rubber bag structure that can achieve elastic expansion and contraction, is sleeved outside the base, and is isolated from the outside, and is connected to the air cavity 9 through the air outlet 10 to obtain air flow to drive the expansion of the airbag 7. The external pressure air source can be an air pump, a pressure gas cylinder, etc. The air pipe 11 can be a flexible tube.

[0038] The occluder seals the boreholes outside the two ends of the test tube by expanding the airbag 7, ensuring that when performing a leakage test, the water in the test tube will not flow to other locations along the axial direction of the borehole after being discharged to the test area, forming a closed test environment. The occluder has a simple structure and is easy to operate, and the elastic design of the airbag 7 can adapt to boreholes of different diameters, improving the versatility of the device.

[0039] The main structure of the leakage test assembly 2 is a test tube, in which a water cavity connected to the water pipe 13 is formed for containing and transmitting test water. A water outlet 14 is provided on the wall of the test tube for discharging the water injected into the water cavity by the water pipe 13 into the formed test area to observe the water leakage.

[0040] The plugger 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 fracture zone through the design of the test tube and the water outlet 14 to test the water leakage.

[0041] like Figure 2 As shown, the image acquisition component is installed in the test tube and on at least one occluder. The image acquisition component includes a pneumatic motor 5 and a camera 6. The pneumatic motor 5 is connected to the trachea 11 through a pressure limiting valve. When the air pressure reaches the set value, the motor is driven to rotate. The camera 6 is connected to the output end of the pneumatic motor 5 and is driven by the motor to rotate to adjust the camera angle. The pressure limiting valve is set at the air inlet of the pneumatic motor 5 to control the air pressure to ensure that the pneumatic motor 5 will not start before the set air pressure value is reached. Similarly, when the air pressure value drops below the set air pressure value, the pressure limiting valve is closed and the pneumatic motor 5 stops running.

[0042] The image acquisition component realizes image acquisition at different shooting angles during the test process through the combination of the pneumatic motor 5 and the camera 6, without the need to manually adjust the position of the camera 6, thereby improving the test efficiency and safety.

[0043] In this embodiment, the set air pressure value for triggering the pressure limiting valve can be 0.5 MPa, and the pressure resistance value of the airbag 7 is greater than 1 MPa. The trachea 11 inflates the airbag 7 to expand the airbag 7. 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 of the trachea 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 limiting valve, and the airflow delivered by the trachea 11 is used to drive the pneumatic motor 5 to operate, driving the camera 6 to adjust the direction. In other optional embodiments, the triggering pressure of the pressure limiting valve can be selected from 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 limiting valve ensures that the pneumatic motor 5 is started only after reaching the set air pressure value, so as to realize the control of whether the pneumatic motor 5 is running or not, and the control process of the expansion and contraction of the airbag 7 and the start and stop of the pneumatic motor 5 is realized by using a single trachea 11.

[0044] The installation position of the image acquisition component is flexible and can be installed in a test tube or on an occluder. It can be adjusted according to actual needs, thereby improving the flexibility and applicability of the device.

[0045] like Figure 1 As shown, the test tube is provided with circumferentially distributed windows to provide shooting windows for the camera 6, and the window position is made of transparent material. The camera 6 rotates along the window relative to the axis of the test tube, and the crack development can be observed in real time through the window. When reaching the predetermined location, the air supply pressure of the air pipe 11 is adjusted to close the pressure limiting valve and stop the air motor 5. The influence of various angles on the outside of the test tube can be obtained through the window to observe the leakage test process.

[0046] The circumferentially distributed viewing window design enables the camera 6 to capture the internal conditions of the test tube in all directions, thereby improving the comprehensiveness and accuracy of the test. The camera 6 rotates along the axis of the test tube, and can flexibly adjust the shooting angle to meet different test requirements.

[0047] like Figure 2 As shown, a protective cover 4 is installed at the front end of the occluder with an image acquisition component to protect the camera 6 from interference from the external environment. The protective cover 4 is provided with circumferentially distributed viewing windows, and the camera 6 rotates along the viewing windows relative to the axis of the protective cover 4 in the protective cover 4.

[0048] The design of the protective cover 4 protects the camera 6, prolongs its service life, and prevents the camera 6 from being affected by impurities or water mist that may be generated during the test. The circumferentially distributed windows and the rotation design of the camera 6 enable the camera 6 to flexibly adjust the shooting angle in the protective cover 4 to ensure that the desired effect is captured, and assist the entire test device in the process of inserting and removing it from the borehole.

[0049] Regarding the arrangement of the trachea 11, Figure 2As shown, one end of the leakage test component 2 is connected to the first occluder 1, and the other end is connected to the second occluder 3, and the image acquisition component is installed on the first occluder 1. The trachea 11 passes through the second occluder 3 at one end of the test tube and the test tube in sequence, and then connects to the first occluder 1 at the other end of the test tube. The pressure limiting valve of the pneumatic motor 5 installed on the occluder is connected to the trachea 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 a stable air pressure drive, and the pneumatic motor 5 installed in the test tube is connected to the section of the air pipe 11 passing through the test tube through the pressure limiting valve, so that all the pneumatic motors 5 can obtain driving airflow from the air pipe 11 respectively, ensuring the normal operation of the camera 6. The design of the air pipe 11 passing through the test tube and the occluder simplifies the structure of the device and improves the reliability and stability of the device.

[0051] like Figure 1 As shown, both ends of the test tube are connected to the occluder via connectors. In this embodiment, one end of the test tube is connected to the first occluder 1 via the first connector 12, and the other end of the test tube is connected to the second occluder 3 via the second connector 15. Both the first connector 12 and the second connector 15 are provided with ball joints.

[0052] The ball joint allows 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 tube, so the water pipe 13 and the air pipe 11 pass through the second connector 15 respectively, and the air pipe 11 continues to pass through the first connector 12 after passing through the test tube, thereby entering the air cavity 9 of the first occluder 1.

[0053] The design of the ball joint allows the connector to flexibly adjust its angle and has a certain bending deformation. During installation in the drilled hole, it can be adjusted within a certain range along with the curvature of the drilled hole, which is convenient 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.

[0054] The base of the occluder is designed as an occluding tube, and the airbag 7 is sleeved outside the occluding tube. The airbag 7 is a cylindrical structure, and both ends are fixed to the occluding tube by clamps 8, and the clamps 8 are covered with a protective cover 4. The part between the clamps 8 at both ends of the airbag 7 can expand and contract. The airbag 7 expands or contracts along the radial direction of the occluding tube under the pressure inside the air cavity 9.

[0055] The occluding tube serves as the skeleton support structure inside the airbag 7, making the occluder more durable and able to withstand greater water and air pressure. The airbag 7 expands or contracts along the radial direction of the occluding tube under the pressure inside the air cavity 9, ensuring the sealing performance of the occluder.

[0056] The water pipe 13 passes through the plug connected to one end of the test tube 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 and improves the compactness and aesthetics of the device. The water pipe 13 and the air pipe 11 are connected to the external pressure water source and air source respectively, ensuring a stable supply of water and air pressure during the test.

[0057] An image acquisition component is installed on the first occluder 1 connected to one end of the test tube, which is used as the front end structure of the entire device. When inserted into the borehole, it first enters the borehole. During the test, the situation inside the borehole can be photographed in real time, which improves the accuracy and reliability of the test. The image acquisition component on it is used to obtain images during the insertion process of the borehole, assisting the process of insertion and removal from the borehole.

[0058] The plug connected to the other end of the test tube is provided with a drill pipe joint 16. 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. The water-conducting fracture 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 meets the requirements of different testing needs and environmental conditions.

[0059] In this embodiment, both the trachea 11 and the water pipe 13 are flexible pipes, which can adapt to the bending deformation between the leakage test assembly 2 and the plugger and keep the water pipe 13 and the trachea 11 unobstructed.

[0060] Example 2

[0061] In another typical embodiment of the present invention, Figure 1-Figure 2 As shown, a testing method for a water-conducting fracture zone testing device is provided, using the water-conducting fracture zone testing device as in Example 1.

[0062] A testing method for a water-conducting fracture zone testing device, comprising:

[0063] The water pipe 13 is connected to a pressure water source, the air pipe 11 is connected to 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 borehole;

[0064] 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;

[0065] Pressurize the air cavity 9 through the trachea 11 to drive the airbags 7 of the occluders connected to the two ends of the test tube to expand, block the drilled hole where the airbags 7 are located, and form a test area between the two occluders;

[0066] The pressure of the air pipe 11 is controlled to trigger the pressure limiting valve to open, and the pneumatic motor 5 drives the camera 6 to rotate and adjust the camera angle to obtain the image in the test area and transmit it back;

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

[0068] The air cavity 9 and the air bag 7 are depressurized to shrink the air bag 7, and the water-conducting fracture zone testing device is pulled out.

[0069] The camera 6 is adjusted to a desired angle by adjusting the pressure of the air pipe 11 , and the air bag 7 is kept inflated to seal the drill hole during the water injection of the water pipe 13 .

[0070] A pneumatic motor 5 and a camera 6 are installed inside the device. The pneumatic motor 5 is driven by the air pressure of the airbag 7 during blocking. Before the set air pressure value is reached, the trachea 11 only drives the airbag 7 to expand. After the set air pressure value is reached, the air flow pressure output by the trachea 11 drives the pneumatic motor 5 to drive the camera 6 to rotate to adjust the shooting angle. The images at different shooting angles can be obtained while reducing the use of the camera 6, thereby meeting the testing requirements of the water-conducting fracture zone. A pressure valve is installed for the pneumatic motor 5. The pressure valve serves as the start-stop switch of the pneumatic motor 5. The pressure valve is triggered by controlling the pressure output by the trachea 11. The start-stop of the motor is controlled by air pressure, so that the air flow output by the trachea 11 serves as the power source of the pneumatic motor 5 and also as the start-stop control, thereby reducing the complexity of the equipment.

[0071] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. 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; The 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, and the output end of the pneumatic motor is connected to the camera to drive the camera to rotate and adjust the camera angle.

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. The water-conducting fracture zone testing device according to claim 1, characterized in that: 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 of the internal pressure of the air cavity.

7. The water-conducting fracture zone testing device according to claim 6, characterized in that: The water pipe is connected to the water cavity after passing through the plug connected to one end of the test tube. 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.

8. The water-conducting fracture zone testing device according to claim 1, characterized in that: 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 of the test tube.

9. 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 8, 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.

10. The testing method of the water-conducting fracture zone testing device according to claim 9, 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