Deep aquifer same-hole different-diameter double-observation water stop effect inspection device

Abstract

The invention relates to the technical field of deep aquifer hydrogeological tests, and discloses a deep aquifer same-hole different-diameter double-observation water stop effect inspection device which comprises a sleeve, a plurality of drainage holes are formed in the outer wall of the sleeve, a sliding groove is formed in the sleeve, a sliding strip is slidably connected into the sliding groove of the sleeve, and the drainage holes are communicated with the sliding strip. A first observation pipe is arranged on one side of the sliding strip, a second observation pipe is arranged at the bottom end of the first observation pipe, a cleaning mechanism is arranged on the inner wall of the second observation pipe, a fixing mechanism is arranged on the inner wall of the first observation pipe, and a drill rod is arranged in the middle of the fixing mechanism. Synchronous water level observation is carried out on upper and lower aquifers which are arranged in the same hole and are different in diameter, an independent observation space is formed through expansion isolation of a water stop part, meanwhile, the smoothness of an observation channel is maintained by means of a cleaning mechanism, the effectiveness of water level monitoring data is ensured, and then the water stop effect is inspected. The problem that it is difficult to test the water stop effect of upper and lower aquifers at the same time under the same-hole different-diameter condition is solved.

Description

Technical Field

[0001] This invention relates to the field of hydrogeological testing technology for deep aquifers, specifically to a device for testing the water-stopping effect of dual observation holes with different diameters in deep aquifers. Background Technology

[0002] In unsteady-flow pumping tests in deep aquifers, dynamic water level monitoring of different aquifers within the same borehole is necessary to obtain accurate hydrogeological parameters and investigate the hydraulic connections between different aquifers. Traditional techniques require casing and cementing of the observation borehole to isolate different aquifers. This process is cumbersome, time-consuming, and costly, making it difficult to simultaneously observe upper and lower aquifers under bare-hole conditions. This results in low pumping test efficiency, untimely data acquisition, and difficulty in simultaneously verifying the water-stopping effect of upper and lower aquifers, ultimately affecting the assessment of aquifer hydraulics. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a dual-observation water-stopping effect testing device for deep aquifers with the same borehole diameter but different diameters, which solves the problem that it is difficult to simultaneously test the water-stopping effect of upper and lower aquifers under the condition of the same borehole diameter but different diameters.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a device for testing the water-stopping effect of dual observation tubes with different diameters in deep aquifers, comprising a sleeve, the outer wall of which is provided with a plurality of drainage holes, the inner wall of which is provided with a groove, a sliding strip slidably connected in the groove of which is provided, an observation tube one provided on one side of the sliding strip, an observation tube two provided at the bottom end of the observation tube one, a cleaning mechanism provided on the inner wall of the observation tube two, a fixing mechanism provided on the inner wall of the observation tube one, a drill rod provided in the middle of the fixing mechanism, a water-stopping component one provided at one end of the middle of the drill rod, a water-stopping component two provided at the other end of the middle of the drill rod, and a connecting mechanism provided at the top end of the drill rod.

[0005] By adopting the above technical solution, simultaneous water level observations can be conducted on upper and lower aquifers with different diameters within the same borehole. The expansion and isolation of the water-stopping components create independent observation spaces, while a cleaning mechanism maintains the unobstructed flow of the observation channels, ensuring the validity of the water level monitoring data and thus verifying the water-stopping effect. This solves the problem of simultaneously verifying the water-stopping effect of upper and lower aquifers under conditions of different diameters within the same borehole.

[0006] Preferably, the cleaning mechanism includes a filter plate, the outer wall of which is disposed on the inner wall of the observation tube 2, a plurality of filter holes are provided in the middle of the filter plate, a rotating shaft is provided in the middle of the filter plate, and a plurality of fan blades are provided on the outer wall of the rotating shaft 1.

[0007] Preferably, the lower surface of the fan blade is provided with a plurality of bristles, one end of which is in contact with the filter plate. A ratchet is provided in the middle of the outer wall of the first rotating shaft, and a pawl is engaged with the tooth end of the ratchet. A third rotating shaft is provided at one end of the pawl, and the third rotating shaft is provided on the upper surface of the filter plate.

[0008] Preferably, the fixing mechanism includes a fixing base, the upper surface of which is provided with a plurality of water inlet holes, and the outer wall of the fixing base is symmetrically provided with a receiving groove. A guide rod is provided in the receiving groove of the fixing base, one end of which is slidably connected to a fixing head through a receiving cavity. A spring is provided on the outer wall of the guide rod, one end of which is located in the receiving groove, and the other end of which is located at one end of the fixing head. The other end of the fixing head is engaged with the inner bottom wall of the observation tube.

[0009] Preferably, the connecting mechanism includes a female connector, the bottom end of which is located at the top end of the drill pipe, and two locking blocks are symmetrically arranged on the outer wall of the female connector. A locking plate is arranged on one side of the locking block, and one side of the locking plate is located on the outer wall of the female connector. A slot is provided at the bottom end of the female connector.

[0010] Preferably, the top of the female connector is provided with a female connector, the outer wall of the female connector is symmetrically provided with a locking block, one side of the locking block is provided with a locking plate, one side of the locking plate is provided on the outer wall of the female connector, the bottom of the locking block is provided with a slot, the locking block and the locking block engage with the locking plate and the locking plate, and the outer wall of the female connector is symmetrically provided with a locking mechanism.

[0011] Preferably, the locking mechanism includes a fixing block, the fixing block has a receiving groove II inside, the fixing rod is provided in the receiving groove II of the fixing block, the fixing rod has a lever on its outer wall, the fixing rod has a spring III on its outer wall, and the outer wall of the spring III is located inside the fixing block.

[0012] Preferably, the connecting mechanism further includes a lower connector, the bottom end of which is disposed at the top end of the drill rod, and an upper connector is disposed at the top end of the lower connector. The outer wall of the upper connector is provided with a plurality of receiving grooves three, and the outer wall of the lower connector is provided with a plurality of receiving grooves four. A pressing rod is disposed in the receiving groove three of the upper connector, and a pressing block is disposed at the top end of one side of the pressing rod.

[0013] Preferably, a second spring is provided at the top of the other side of the pressing rod, one end of the second spring is provided in the receiving groove three of the upper connector, a second rotating shaft is provided in the receiving groove three of the upper connector, the outer wall of the second rotating shaft is rotatably connected to the middle of the pressing rod, a wedge block is provided at the bottom of one side of the pressing rod, and a slot is provided in the receiving groove four of the lower connector, the wedge block engages with the slot of the lower connector.

[0014] A method for verifying the water-stopping effect of dual observation holes with the same borehole diameter but different borehole diameters in deep aquifers includes the following steps:

[0015] S1. Lower the inspection device into the preset observation hole so that the first water-stopping component and the second water-stopping component are respectively positioned at the interface between the isolated upper and lower aquifers, ensuring that the drainage hole on the outer wall of the casing is connected to the upper aquifer.

[0016] S2. The drill rod is connected to the external drive device through the connecting mechanism, so that the drill rod enters a specific position and is fixed. The water-stopping component one and the water-stopping component two expand when they come into contact with water, so that the water-stopping component fits into the wall of the observation hole.

[0017] S3. Fix observation tube one and observation tube two using a fixing mechanism. Monitor the water level of the upper aquifer through observation tube one and monitor the water level of the lower aquifer through observation tube two. Record the initial water level data.

[0018] S4. The dynamic changes in water level of the upper and lower aquifers are monitored simultaneously through observation tube one and observation tube two. During this period, the filter plate inside observation tube two is cleaned by a cleaning mechanism to ensure the accuracy of water level monitoring.

[0019] S5. During the pumping test, if the water level changes of the upper and lower aquifers have the same trend and the difference remains stable within the preset range, the water-stopping effect is judged to be good; if the water level changes show obvious correlation fluctuations or the difference exceeds the preset range, the water-stopping effect is judged to be ineffective, and the position of the water-stopping component needs to be readjusted and steps S2-S4 need to be repeated.

[0020] This invention provides a device for testing the water-stopping effect of dual observation holes with the same borehole diameter but different borehole diameters in deep aquifers. It has the following beneficial effects:

[0021] 1. This invention enables simultaneous water level monitoring of upper and lower aquifers with different diameters within the same borehole. The expansion and isolation of the water-stopping component creates an independent observation space, while a cleaning mechanism maintains the unobstructed flow of the observation channel, ensuring the validity of the water level monitoring data and thus verifying the water-stopping effect. This solves the problem of simultaneously verifying the water-stopping effect of upper and lower aquifers under conditions of different diameters within the same borehole.

[0022] 2. This invention automatically cleans the filter plate inside the observation tube, reducing the likelihood of filter holes being clogged by impurities, maintaining the filter plate's filtration performance, ensuring smooth water flow within the observation tube, and guaranteeing the continuity and accuracy of water level monitoring. This solves the problem that during long-term use, the filter plate in the observation tube is easily clogged by impurities in the water, leading to obstructed observation channels and affecting water level monitoring results.

[0023] 3. This invention enables the rapid fixing and separation of the drill rod and the observation tube. In the fixed state, their relative positions remain stable, ensuring that the water-stopping component and the observation component are in their preset working positions without obstructing water flow within the observation tube, thus guaranteeing normal water level observation. This solves the problem of unstable connection between the drill rod and the observation tube in dual-observation devices with different diameters in the same borehole, which affects the accuracy of observations.

[0024] 4. This invention enables rapid connection and separation of the drill rod from external equipment. In the connected state, the connection is maintained stably through a combination of a locking structure and a clamping mechanism, preventing loosening due to external forces or vibrations and ensuring the reliability of the device's operation. This solves the problem of easy loosening of the drill rod after connection to external equipment in dual-observation devices with different diameters in the same borehole, which affects the operation of the water-stopping components. Attached Figure Description

[0025] Figure 1 This is a three-dimensional front view of a deep aquifer dual-observation water-stopping effect testing device with the same borehole diameter but different diameters proposed in this invention.

[0026] Figure 2 This is a three-dimensional sectional view of the casing of a deep aquifer double-observation water-stopping effect testing device with the same borehole and different diameter, as proposed in this invention.

[0027] Figure 3 This is a partial structural cross-sectional view of the observation tube of a deep aquifer double-observation water-stopping effect testing device with the same borehole but different diameter proposed in this invention.

[0028] Figure 4 This is a partial structural cross-sectional view of the fixing base of a deep aquifer double-observation water-stopping effect testing device with the same borehole diameter but different diameter, as proposed in this invention.

[0029] Figure 5 This is a partial structural cross-sectional view of the fixing head of a dual-observation water-stopping effect testing device with the same borehole diameter but different diameter in deep aquifers, as proposed in this invention.

[0030] Figure 6 This is a partial structural diagram of the filter plate of a dual-observation water-stopping effect testing device with the same hole diameter but different diameter in deep aquifers, as proposed in this invention.

[0031] Figure 7 This is a partial structural diagram of the female connector of a deep aquifer double-observation water-stopping effect testing device with the same borehole diameter but different diameter, as proposed in this invention.

[0032] Figure 8 This is a partial structural diagram of a card block for a deep aquifer dual-observation water-stopping effect testing device with the same borehole diameter but different diameters proposed in this invention;

[0033] Figure 9 This is a partial structural diagram of the pressing rod of a dual-observation water-stopping effect testing device with the same borehole diameter but different diameter in deep aquifers, as proposed in this invention.

[0034] Figure 10 This is a partial structural cross-sectional view of the connector of a deep aquifer dual-observation water-stopping effect testing device with the same borehole diameter but different diameter, as proposed in this invention.

[0035] Figure 11 This is a flowchart of a method for verifying the water-stopping effect of dual observation holes with the same borehole diameter but different borehole diameters in deep aquifers, as proposed in this invention.

[0036] The components are as follows: 1. Sleeve; 2. Drain hole; 3. Female connector; 4. Female connector; 5. Drill rod; 6. Observation tube one; 7. Observation tube two; 8. Sliding bar; 9. Filter plate; 10. Water-stop component one; 11. Fixing seat; 12. Water-stop component two; 13. Fan blade; 14. Water inlet hole; 15. Fixing head; 16. Spring one; 17. Guide rod; 18. Receiving cavity; 19. Rotating shaft one; 20. Ratchet; 21. Pawl; 22. Brush bristles; 23. Locking block one; 24. Locking plate one; 25. Locking block two; 26. Locking plate two; 27. Fixing block; 28. Fixing rod; 29. ​​Toggle rod; 30. Upper connector; 31. Lower connector; 32. Pressing block; 33. Slide groove; 34. Pressing rod; 35. Rotating shaft two; 36. Spring two; 37. Wedge block. Detailed Implementation

[0037] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] Example 1

[0039] Please see the appendix Figure 1 -Appendix Figure 10 This invention provides a device for testing the water-stopping effect of dual observation holes with different diameters in the same deep aquifer, including a sleeve 1. The outer wall of the sleeve 1 is provided with a plurality of drainage holes 2. The inside of the sleeve 1 is provided with a sliding groove 33. A sliding strip 8 is slidably connected in the sliding groove 33 of the sleeve 1. An observation tube 6 is provided on one side of the sliding strip 8. An observation tube 7 is provided at the bottom end of the observation tube 6. A cleaning mechanism is provided on the inner wall of the observation tube 7. A fixing mechanism is provided on the inner wall of the observation tube 6. A drill rod 5 is provided in the middle of the fixing mechanism. A water-stopping component 10 is provided at one end of the middle of the drill rod 5. A water-stopping component 22 is provided at the other end of the middle of the drill rod 5. A connecting mechanism is provided at the top of the drill rod 5.

[0040] Specifically, in the deep aquifer dual-observation water-stopping effect testing device with the same borehole diameter but different diameter, the casing 1 is connected to the aquifer through its outer wall drainage hole 2. The slide bar 8 slides along the inner slide groove 33 of the casing 1 to adjust the position of the observation tube 1 6 and the observation tube 2 7, so that the two correspond to the upper and lower aquifers being observed respectively. The fixing mechanism fixes the drill rod 5 and the observation tube 1 6 relative to each other, ensuring that the water-stopping component 1 10 and the water-stopping component 2 12 are in the preset water-stopping position. The connecting mechanism realizes the connection between the drill rod 5 and the external equipment, so that the operation of the water-stopping component 1 10 and the water-stopping component 2 12 can expand and fit with the borehole wall to form isolation. The water-stopping component 1 10 and the water-stopping component 2 12 are made of water-stopping rubber strips, water-stopping rubber, kelp and other materials, which have the property of expanding when exposed to water. Once the water-stopping components are lowered into the pre-set position within the borehole and come into contact with the water, water-stopping components 10 and 12 absorb water and expand, causing the entire water-stopping component to adhere to the borehole wall, blocking the hydraulic connection between the upper and lower aquifers and forming an isolation zone. The cleaning mechanism cleans the monitoring channel within observation tube 7 to ensure smooth water level observation. Water level changes in the upper and lower aquifers are monitored through observation tubes 6 and 7 respectively, and the water-stopping effect is determined by combining this with the isolation status of the water-stopping components.

[0041] By simultaneously monitoring the water level of upper and lower aquifers with different diameters within the same borehole, and using the expansion isolation of the water-stopping components to create independent observation spaces, while maintaining the unobstructed flow of the observation channels with the help of a cleaning mechanism, the validity of the water level monitoring data is ensured, thereby enabling the verification of the water-stopping effect. This solves the problem of simultaneously verifying the water-stopping effect of upper and lower aquifers under conditions of different diameters within the same borehole.

[0042] Please see the appendix Figure 2 -Appendix Figure 3 Appendix Figure 6 The cleaning mechanism includes a filter plate 9, the outer wall of which is set on the inner wall of the observation tube 2 7. The filter plate 9 has several filter holes in the middle. The filter plate 9 has a rotating shaft 19 in the middle. The outer wall of the rotating shaft 19 has several fan blades 13. The lower surface of the fan blades 13 has several bristles 22. One end of the bristles 22 is in contact with the filter plate 9. The outer wall of the rotating shaft 19 has a ratchet 20 in the middle. The teeth of the ratchet 20 are engaged with a pawl 21. One end of the pawl 21 is set with a rotating shaft 3, which is set on the upper surface of the filter plate 9.

[0043] Specifically, in the cleaning mechanism, the filter plate 9 filters the water entering the observation tube 2 7 through its filter holes, preventing impurities from entering the subsequent observation channel; when the water flows through the fan blade 13, the water flow drives the fan blade 13 to rotate the shaft 19, causing the bristles 22 on the lower surface of the fan blade 13 to rotate synchronously and clean the surface of the filter plate 9. The ratchet 20 on the shaft 19 cooperates with the pawl 21 to restrict the shaft 19 from rotating in the opposite direction. The pawl 21 is connected to the 9 through a return spring, so that it automatically resets and always fits against the ratchet 20, ensuring that the bristles 22 only continuously clean the filter plate 9 in one direction.

[0044] By automatically cleaning the filter plate 9 inside observation tube 2 7, the clogging of the filter holes by impurities is reduced, maintaining the filtration performance of the filter plate 9, ensuring smooth water flow within observation tube 2 7, and guaranteeing the continuity and accuracy of water level observation. This solves the problem that during long-term use, the filter plate 9 of observation tube 2 7 is easily clogged by impurities in the water, leading to obstructed observation channels and affecting the water level monitoring effect.

[0045] Please see the appendix Figure 3 - Appendix Figure 5 The fixing mechanism includes a fixing base 11. The upper surface of the fixing base 11 is provided with several water inlet holes 14. The outer wall of the fixing base 11 is symmetrically provided with a receiving groove. A guide rod 17 is provided in the receiving groove of the fixing base 11. One end of the guide rod 17 is slidably connected to a fixing head 15 through a receiving cavity 18. A spring 16 is provided on the outer wall of the guide rod 17. One end of the spring 16 is provided in the receiving groove, and the other end of the spring 16 is provided at one end of the fixing head 15. The other end of the fixing head 15 is engaged with the inner bottom wall of the observation tube 6.

[0046] Specifically, in the fixing mechanism, the fixing seat 11 guides and limits the fixing head 15 through the guide rod 17 inside the receiving groove on its outer wall; when the spring 16 is in its natural state, it pushes the fixing head 15 to extend outward along the guide rod 17 into the receiving groove, so that the other end of the fixing head 15 engages with the inner bottom wall of the observation tube 6, thereby achieving relative fixation between the fixing seat 11 and the observation tube 6; when it is necessary to release the fixation, the fixing head 15 compresses the spring 16 under the action of external force and retracts into the receiving groove, disengaging from the engagement with the inner bottom wall of the observation tube 6. The water inlet hole 14 on the upper surface of the fixing seat 11 allows water to flow, preventing the fixing structure from affecting water flow observation.

[0047] By quickly fixing and separating the drill rod 5 and the observation tube 6, their relative positions remain stable in the fixed state, ensuring that the water-stopping component and the observation component are in their preset working positions without obstructing the flow of water in the observation tube, thus guaranteeing the normal operation of water level observation. This solves the problem of unstable connection between the drill rod 5 and the observation tube 6 in dual observation devices with different diameters in the same borehole, which affects the accuracy of the observation.

[0048] Please see the appendix Figure 1 -Appendix Figure 3 Appendix Figure 7 -Appendix Figure 8 The connecting mechanism includes a female connector 4, the bottom end of which is located at the top end of the drill pipe 5. A second locking block 25 is symmetrically arranged on the outer wall of the female connector 4. A second locking plate 26 is located on one side of the second locking block 25, and one side of the second locking plate 26 is located on the outer wall of the female connector 4. A slot 1 is located at the bottom end of the female connector 4. A female connector 3 is located at the top end of the female connector 4. A first locking block 23 is symmetrically arranged on the outer wall of the female connector 3. A first locking plate 24 is located on one side of the first locking block 23, and one side of the first locking plate 24 is located on the female connector. The outer wall of the 3 has a slot 2 at the bottom of the first locking block 23. The first locking block 23 and the second locking block 25 engage with the first locking plate 24 and the second locking plate 26. The outer wall of the female connector 4 is symmetrically provided with locking mechanisms. The locking mechanisms include a fixing block 27. The inside of the fixing block 27 is provided with a receiving groove 2. The receiving groove 2 of the fixing block 27 is provided with a fixing rod 28. The outer wall of the fixing rod 28 is provided with a lever 29. The outer wall of the fixing rod 28 is provided with a spring 3. The outer wall of the spring 3 is located inside the fixing block 27.

[0049] Specifically, in the connection mechanism, the bottom end of the female connector 4 is connected to the top end of the drill rod 5, and the two locking blocks 25 symmetrically arranged on its outer wall form a mating structure with the locking plate 26 on one side; the female connector 3 is located at the top of the female connector 4, and the locking blocks 23 symmetrically arranged on its outer wall form a corresponding mating structure with the locking plate 24 on one side. During assembly, the female connector 4 and the female connector 3 are initially connected by the locking blocks 23 engaging with the locking plate 26 and the locking blocks 25 engaging with the locking plate 24. The locking mechanism can further connect and lock the locking blocks 23 and the locking plate 26 to prevent loosening.

[0050] In the locking mechanism, the spring three applies an elastic force to the fixing rod 28 in its natural state, pushing the fixing rod 28 into the mating part of the sub-connector 3 and the female connector 4, thus locking the two together and preventing the connection from loosening. When it is necessary to separate the sub-connector 3 and the female connector 4, the lever 29 can be moved to drive the fixing rod 28 to overcome the elastic force of the spring three and compress the spring three, causing the fixing rod 28 to disengage from the locking position, releasing the lock on the two, thereby realizing the separation of the sub-connector 3 and the female connector 4.

[0051] The drill rod 5 allows for quick connection and disconnection from external equipment. In the connected state, a combination of a locking mechanism and a snap-fit ​​structure maintains stable connection, preventing loosening due to external forces or vibrations and ensuring the reliability of the device's operation. This solves the problem of drill rod 5 easily loosening after connection to external equipment in dual-observation devices with different diameters in the same borehole, thus affecting the operation of the water-stopping components.

[0052] Example 2

[0053] Please see the appendix Figure 9 -Appendix Figure 10The connecting mechanism also includes a lower connector 31, the bottom end of which is located at the top end of the drill rod 5. An upper connector 30 is located at the top end of the lower connector 31. The outer wall of the upper connector 30 is provided with several receiving grooves 3 and the outer wall of the lower connector 31 is provided with several receiving grooves 4. A pressing rod 34 is provided in the receiving groove 3 of the upper connector 30. A pressing block 32 is provided at the top end of one side of the pressing rod 34. A spring 2 36 is provided at the top end of the other side of the pressing rod 34. One end of the spring 2 36 is located in the receiving groove 3 of the upper connector 30. A rotating shaft 2 35 is provided in the receiving groove 3 of the upper connector 30. The outer wall of the rotating shaft 2 35 is rotatably connected to the middle of the pressing rod 34. A wedge block 37 is provided at the bottom end of one side of the pressing rod 34. A slot is provided in the receiving groove 4 of the lower connector 31. The wedge block 37 engages with the slot of the lower connector 31.

[0054] Specifically, in the connecting mechanism, the bottom end of the lower connector 31 is connected to the top end of the drill rod 5, and the upper connector 30 is located at the top end of the lower connector 31. In the receiving groove three of the upper connector 30, the pressing rod 34 is rotatably connected through the rotating shaft two 35. In its natural state, the spring two 36 applies an elastic force to the top end of one side of the pressing rod 34, causing the wedge block 37 at the bottom end of the other side of the pressing rod 34 to extend into the slot of the receiving groove four of the lower connector 31, thereby achieving the locking and fixing of the upper connector 30 and the lower connector 31. When the pressing block 32 is pressed, the pressing rod 34 rotates around the rotating shaft two 35 and compresses the spring two 36, causing the wedge block 37 to disengage from the slot, thus releasing the fixing of the upper connector 30 and the lower connector 31.

[0055] The drill rod 5 can be quickly connected and disconnected from external components. In the connected state, the wedge block 37 engages with the slot, and the elastic force of spring 36 maintains a stable connection. This convenient operation ensures reliable connection during operation. It solves the problem of cumbersome connection operations between the drill rod 5 and external components in dual-observation devices with different diameters in the same borehole, which affects the overall stability of the device.

[0056] Example 3

[0057] Please see the appendix Figure 11 A method for verifying the water-stopping effect of dual observation holes with the same borehole diameter but different borehole diameters in deep aquifers includes the following steps:

[0058] S1. Lower the inspection device into the preset observation hole so that the water-stopping component 10 and the water-stopping component 2 12 correspond to the interface between the isolated upper and lower aquifers, and ensure that the drainage hole 2 on the outer wall of the sleeve 1 is connected to the upper aquifer.

[0059] S2. The drill rod 5 is connected to the external drive device through the connecting mechanism, so that the drill rod 5 enters a specific position and is fixed. The water-stopping component 10 and the water-stopping component 2 12 expand when they come into contact with water, so that the water-stopping component fits into the wall of the observation hole.

[0060] S3. Fix observation tube 6 and observation tube 7 using a fixing mechanism. Monitor the water level of the upper aquifer through observation tube 6 and monitor the water level of the lower aquifer through observation tube 7. Record the initial water level data.

[0061] S4. The dynamic changes in water level of the upper and lower aquifers are monitored synchronously through observation tube 1 (6) and observation tube 2 (7). During this period, the filter plate 9 inside observation tube 2 (7) is cleaned by a cleaning mechanism to ensure the accuracy of water level monitoring.

[0062] S5. During the pumping test, if the water level changes of the upper and lower aquifers have the same trend and the difference remains stable within the preset range, the water-stopping effect is judged to be good; if the water level changes show obvious correlation fluctuations or the difference exceeds the preset range, the water-stopping effect is judged to be ineffective, and the position of the water-stopping component needs to be readjusted and steps S2-S4 need to be repeated.

[0063] Specifically, in the method for verifying the water-stopping effect of dual observation holes with different diameters in deep aquifers, the testing device is first lowered into the observation hole, so that water-stopping component 10 and water-stopping component 2 correspond to the interfaces of the upper and lower aquifers, and the drainage hole 2 of the casing 1 is connected to the upper aquifer; the drill rod 5 is connected and fixed to the external drive equipment through the connecting mechanism, and the water-stopping component expands when it comes into contact with water and adheres to the hole wall to form an isolation; the observation tube 1 6 and observation tube 2 7 are fixed by the fixing mechanism to monitor the initial water level of the upper and lower aquifers respectively; during the pumping test, the dynamic changes of the water level are monitored simultaneously, and the cleaning mechanism cleans the filter plate 9 of observation tube 2 7 to ensure the monitoring accuracy; the water-stopping effect is judged based on the trend of water level changes in the upper and lower aquifers and whether the difference is within the preset range.

[0064] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for testing the water-stopping effect of dual observation holes with different diameters in deep aquifers, comprising a casing (1), characterized in that: The outer wall of the sleeve (1) is provided with several drainage holes (2), the inside of the sleeve (1) is provided with a sliding groove (33), a sliding strip (8) is slidably connected in the sliding groove (33) of the sleeve (1), an observation tube (6) is provided on one side of the sliding strip (8), an observation tube (7) is provided at the bottom end of the observation tube (6), a cleaning mechanism is provided on the inner wall of the observation tube (7), a fixing mechanism is provided on the inner wall of the observation tube (6), a drill rod (5) is provided in the middle of the fixing mechanism, a water-stopping component (10) is provided at one end of the middle of the drill rod (5), a water-stopping component (12) is provided at the other end of the middle of the drill rod (5), and a connecting mechanism is provided at the top of the drill rod (5).

2. The device for testing the water-stopping effect of dual observation holes with different diameters in deep aquifers according to claim 1, characterized in that: The cleaning mechanism includes a filter plate (9), the outer wall of which is disposed on the inner wall of the observation tube (7), a plurality of filter holes are provided in the middle of the filter plate (9), a rotating shaft (19) is provided in the middle of the filter plate (9), and a plurality of fan blades (13) are provided on the outer wall of the rotating shaft (19).

3. The device for testing the water-stopping effect of dual observation holes with different diameters in deep aquifers according to claim 2, characterized in that: The lower surface of the fan blade (13) is provided with several bristles (22), one end of the bristles (22) is in contact with the filter plate (9), a ratchet (20) is provided in the middle of the outer wall of the first rotating shaft (19), the teeth of the ratchet (20) are engaged with a pawl (21), one end of the pawl (21) is provided with a third rotating shaft, and the third rotating shaft is provided on the upper surface of the filter plate (9).

4. The device for testing the water-stopping effect of dual observation holes with different diameters in deep aquifers according to claim 1, characterized in that: The fixing mechanism includes a fixing seat (11), the upper surface of the fixing seat (11) is provided with a plurality of water inlet holes (14), the outer wall of the fixing seat (11) is symmetrically provided with a receiving groove, a guide rod (17) is provided in the receiving groove of the fixing seat (11), one end of the guide rod (17) is slidably connected to a fixing head (15) through a receiving cavity (18), the outer wall of the guide rod (17) is provided with a spring (16), one end of the spring (16) is provided in the receiving groove, the other end of the spring (16) is provided at one end of the fixing head (15), and the other end of the fixing head (15) is engaged with the inner bottom wall of the observation tube (6).

5. The device for testing the water-stopping effect of dual observation holes with different diameters in deep aquifers according to claim 1, characterized in that: The connecting mechanism includes a female connector (4), the bottom end of which is located at the top of the drill rod (5). A second locking block (25) is symmetrically arranged on the outer wall of the female connector (4). A second locking plate (26) is arranged on one side of the second locking block (25). One side of the second locking plate (26) is located on the outer wall of the female connector (4). A slot is provided at the bottom end of the female connector (4).

6. The device for testing the water-stopping effect of dual observation holes with different diameters in deep aquifers according to claim 5, characterized in that: The top of the female connector (4) is provided with a sub-connector (3). The outer wall of the sub-connector (3) is symmetrically provided with a locking block (23). A locking plate (24) is provided on one side of the locking block (23). One side of the locking plate (24) is provided on the outer wall of the sub-connector (3). The bottom end of the locking block (23) is provided with a slot (25). The locking block (23) and the locking block (25) engage with the locking plate (24) and the locking plate (26). The outer wall of the female connector (4) is symmetrically provided with a locking mechanism.

7. The device for testing the water-stopping effect of dual observation holes with different diameters in deep aquifers according to claim 6, characterized in that: The locking mechanism includes a fixing block (27), the inside of which is provided a receiving groove II, a fixing rod (28) is provided in the receiving groove II of the fixing block (27), a lever (29) is provided on the outer wall of the fixing rod (28), and a spring III is provided on the outer wall of the fixing rod (28), with the outer wall of the spring III located inside the fixing block (27).

8. The device for testing the water-stopping effect of dual observation holes with different diameters in deep aquifers according to claim 1, characterized in that: The connecting mechanism also includes a lower connector (31), the bottom end of which is located at the top end of the drill rod (5). An upper connector (30) is located at the top end of the lower connector (31). The outer wall of the upper connector (30) is provided with several receiving grooves three. The outer wall of the lower connector (31) is provided with several receiving grooves four. A pressing rod (34) is provided in the receiving groove three of the upper connector (30). A pressing block (32) is provided at the top end of one side of the pressing rod (34).

9. The device for testing the water-stopping effect of dual observation holes with different diameters in deep aquifers according to claim 8, characterized in that: A second spring (36) is provided at the top of the other side of the pressing rod (34). One end of the second spring (36) is provided in the receiving groove three of the upper connector (30). A second rotating shaft (35) is provided in the receiving groove three of the upper connector (30). The outer wall of the second rotating shaft (35) is rotatably connected to the middle of the pressing rod (34). A wedge block (37) is provided at the bottom of one side of the pressing rod (34). A slot is provided in the receiving groove four of the lower connector (31). The wedge block (37) engages with the slot of the lower connector (31).

10. A method for verifying the water-stopping effect of dual observation holes with the same borehole diameter but different borehole diameters in deep aquifers, characterized in that, The device for testing the water-stopping effect of a deep aquifer with the same borehole diameter but different borehole diameter, as described in any one of claims 1-9, comprises the following steps: S1. Insert the inspection device into the preset observation hole so that the first water-stop component (10) and the second water-stop component (12) correspond to the interface between the isolated upper and lower aquifers, and ensure that the drainage hole (2) on the outer wall of the sleeve (1) is connected to the upper aquifer. S2. The drill rod (5) is connected to the external drive device through the connecting mechanism, so that the drill rod (5) enters a specific position and is fixed. The water-stopping component one (10) and the water-stopping component two (12) expand when they come into contact with water, so that the water-stopping component fits into the wall of the observation hole. S3. Fix observation tube one (6) and observation tube two (7) using a fixing mechanism. Monitor the water level of the upper aquifer through observation tube one (6) and monitor the water level of the lower aquifer through observation tube two (7). Record the initial water level data. S4. The dynamic changes of water level in the upper and lower aquifers are monitored simultaneously through observation tube 1 (6) and observation tube 2 (7). During this period, the filter plate (9) in observation tube 2 (7) is cleaned by a cleaning mechanism to ensure the accuracy of water level monitoring. S5. During the pumping test, if the water level changes of the upper and lower aquifers have the same trend and the difference remains stable within the preset range, the water-stopping effect is judged to be good; if the water level changes show obvious correlation fluctuations or the difference exceeds the preset range, the water-stopping effect is judged to be ineffective, and the position of the water-stopping component needs to be readjusted and steps S2-S4 need to be repeated.

Images