A water injection test device for water conservancy and hydropower engineering geological exploration

By designing the disassembly, adjustment, and conveying mechanisms of the water injection test device, the problems of borehole collapse, transportation difficulties, and adaptability to mountainous terrain were solved. The device was made convenient for transportation and water storage, adaptable to simple threaded drills, and the reliability and convenience of water injection tests were improved.

CN116202930BActive Publication Date: 2026-03-24YUNNAN WATER RESOURCES & HYDRO POWER RECONNAISSANCE & DESIGN RES INST
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-12-26
Publication Date
2026-03-24

AI Technical Summary

Technical Problem

Existing water injection experiments suffer from problems such as borehole collapse, transportation difficulties, incompatibility with mountainous environments, inability to be matched with simple threaded drills, and lack of water storage devices.

Method used

A water injection test device was designed, comprising a bottom plate, a top water tank, a drive motor, a horizontal extension rod, a horizontal rotation rod, a shielding tube, and a disassembly mechanism. Through the adjustment mechanism, the moving mechanism, and the conveying mechanism, the shielding tube can be disassembled and the device can be folded, making it suitable for mountain transportation. It is also compatible with a simple thread drill and has a water storage function.

Benefits of technology

It effectively prevents borehole collapse, reduces the space occupied by the device, facilitates transportation, adapts to mountainous environments, can be matched with simple threaded drills, and has water storage capacity.

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Abstract

The application discloses a water injection test device for water conservancy and hydropower engineering geological survey, and relates to the technical field of water injection test.The water injection test device comprises a bottom plate, a top water tank is arranged on the top of the bottom plate, a second driving motor is arranged in the top water tank, a horizontal extension rod is arranged on the output end of the second driving motor, a horizontal rotating rod is arranged on one end of the horizontal extension rod, helical blades are fixed to the outer side of the horizontal rotating rod, and a shielding pipe is arranged on the outer side of the horizontal rotating rod.The device is provided with a dismounting mechanism, so that the shielding pipe can be placed in the inside of the drilling hole during drilling, the collapse of the drilling hole is prevented, and the subsequent water injection test is facilitated.The device is provided with a moving mechanism and an adjusting mechanism, so that the top water tank can be folded on the top of the bottom plate, space is saved, the horizontal extension rod and the horizontal rotating rod can be placed separately through dismounting, the occupied space of the device is reduced, and transportation is facilitated.
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Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of water injection test, and particularly relates to a water injection test device for water conservancy and hydropower engineering geological survey. BACKGROUND

[0002] Water conservancy and hydropower is a basic industry of national economy and social development; when water conservancy and hydropower engineering construction is carried out, geological survey needs to be carried out, at which time water injection test needs to be carried out, drilling water injection test is a kind of in-situ test method for measuring rock-soil permeability coefficient by artificially lifting the water head in the hole, injecting clean water into the drilling hole.

[0003] In the existing water injection test, the following problems exist:

[0004] 1. In the existing water injection test, the hole collapses due to the loose surface rock-soil during drilling, thereby affecting the subsequent water injection test;

[0005] 2. The water injection test device cannot be well transported in mountainous road conditions and needs to be manually carried, consuming manpower, and most of the water conservancy and hydropower projects are in mountainous areas;

[0006] 3. The water injection test device is often attached to a standard drilling machine, and the water injection test device is not configured for a simple threaded drill.

[0007] 4. The test water of the existing water injection test often needs a water pumping and conveying device, and a water storage device is not configured. SUMMARY

[0008] The purpose of the present application is to provide a water injection test device for water conservancy and hydropower engineering geological survey to solve the existing problems: the existing water injection test has the problems of collapse, transportation, matching simple threaded drill and water storage.

[0009] To solve the above technical problems, the present application is realized by the following technical scheme: a water injection test device for water conservancy and hydropower engineering geological survey, comprising a bottom plate, a top water tank is arranged on the top of the bottom plate, a second driving motor is arranged in the inside of the top water tank, a horizontal extension rod is arranged on the output end of the second driving motor, a horizontal rotating rod is arranged on one end of the horizontal extension rod, a spiral blade is fixed on the outside of the horizontal rotating rod, a shielding pipe is further arranged on the outside of the horizontal rotating rod, and the horizontal rotating rod and the shielding pipe are detached through a detaching mechanism;

[0010] An adjusting mechanism for adjusting the angle of the top water tank is further arranged between the bottom plate and the top water tank;

[0011] A moving mechanism for moving the second driving motor is arranged in the inside of the top water tank;

[0012] The bottom of the bottom plate is provided with a detachable conveying mechanism.

[0013] Further, the output end of the second driving motor and one end of the transverse extension rod are provided with connecting pipes, and the connecting pipes and the transverse extension rod and the connecting pipes and the transverse rotating rod are fixed through bolts.

[0014] Further, the moving mechanism comprises a first driving motor, the output end of the first driving motor is fixed with a first transverse threaded rod, the outer side of the first transverse threaded rod is threadedly connected with a first transverse sliding plate, and the end of the first transverse sliding plate close to the second driving motor is fixed with the second driving motor through bolts.

[0015] Further, the dismounting mechanism comprises a circular rotating block, the outer side of the transverse rotating rod is threadedly connected with the circular rotating block, one end of the circular rotating block is rotatably connected with a circular moving block, the outer side of the circular moving block is rotatably connected with a plurality of rectangular transmission columns, one end of the rectangular transmission column is rotatably connected with a circular sliding pipe, the inner side of the circular sliding pipe is slidably connected with a circular limiting rod, and the circular limiting rod is fixedly connected with the transverse rotating rod.

[0016] Further, the circular moving block, the rectangular transmission column and the circular sliding pipe are rotatably connected through pins;

[0017] The outer side of the transverse rotating rod is provided with external threads, the inner side of the circular rotating block is provided with internal threads, and the transverse rotating rod and the circular rotating block are threadedly connected through the external threads and the internal threads;

[0018] The inner side of the shielding pipe is provided with a limiting hole in gap cooperation with the circular sliding pipe.

[0019] Further, the adjusting mechanism comprises a rectangular mounting plate, one end of the rectangular mounting plate is fixedly provided with a third driving motor, the output end of the third driving motor is fixed with a second transverse threaded rod, the outer side of the second transverse threaded rod is threadedly connected with a second transverse sliding plate, the top of the second transverse sliding plate is rotatably connected with a rectangular transmission rod, and the top of the rectangular transmission rod is rotatably connected with the top water tank.

[0020] Further, one end of the rectangular mounting plate and on both sides of the second transverse threaded rod are fixedly provided with transverse light rods, the transverse light rods penetrate through the inner side of the second transverse sliding plate and are slidably connected with the second transverse sliding plate.

[0021] One end of the top of the bottom plate is also fixedly provided with a vertical mounting block, and the top of the vertical mounting block is rotatably connected with the top water tank through a pin.

[0022] Furthermore, the conveying mechanism includes a rectangular mounting base, the bottom of the bottom plate is provided with a rectangular mounting base, and multiple rotating rollers are evenly distributed on both sides of the rectangular mounting base, and the multiple rotating rollers are connected to each other by a track.

[0023] The rectangular mounting base is equipped with a fourth drive motor, and the output end of the fourth drive motor is connected to one of the rotating rollers.

[0024] Furthermore, the conveying mechanism also includes rectangular limiting posts. Both ends of the top of the rectangular mounting base are fixed with rectangular limiting posts. Both ends of the bottom plate are slidably connected with longitudinal limiting posts. A rectangular sliding plate is fixed to the outside of the longitudinal limiting posts. A rigid spring is also provided at one end of the rectangular sliding plate and outside the longitudinal limiting posts. One end of the two rigid springs is fixed with a transverse connecting post.

[0025] Furthermore, the rectangular limiting post has a limiting groove with a longitudinal limiting post clearance fit inside;

[0026] The bottom plate has a rectangular sliding groove inside, and the bottom plate and the rectangular sliding plate are slidably connected through the rectangular sliding groove.

[0027] The present invention has the following beneficial effects:

[0028] 1. The present invention, through a disassembly mechanism, allows the shielding pipe to be placed inside the borehole during drilling, preventing the borehole from collapsing and facilitating subsequent water injection experiments.

[0029] 2. The present invention, through the setting of the moving mechanism and the adjusting mechanism, allows the top water tank to be folded on the top of the bottom plate, saving space. Furthermore, the disassembly of the horizontal extension rod and the horizontal rotating rod allows the horizontal extension rod and the horizontal rotating rod to be placed separately, reducing the space occupied by the device and making it easier to transport.

[0030] 3. The present invention, through the setting of the conveying mechanism, makes the device more adaptable to mountainous conditions, thereby facilitating the movement of the device in mountainous areas, and allows the rectangular mounting base to be detached from the bottom plate, so that the rectangular mounting base and the bottom plate can be transported separately, which facilitates the transportation of the device.

[0031] 4. The present invention uses a mechanical device to match the water injection device with the thread drill.

[0032] 5. The present invention avoids the need for pumping and conveying devices by using a water storage device. Attached Figure Description

[0033] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0035] Figure 2 This is a cross-sectional view of the internal structure of the top water tank of the present invention;

[0036] Figure 3 This is a cross-sectional view of the internal structure of the shielding tube of the present invention;

[0037] Figure 4 This is a schematic diagram of the disassembly mechanism of the present invention;

[0038] Figure 5 This is a schematic diagram of the adjustment mechanism of the present invention;

[0039] Figure 6 This is a schematic diagram of the rectangular mounting base and the fourth drive motor of the present invention;

[0040] Figure 7 This is a cross-sectional view of the internal structure of the bottom plate of the present invention.

[0041] The attached diagram lists the components represented by each number as follows:

[0042] 1. Bottom plate; 2. Top water tank; 3. First drive motor; 4. First transverse threaded rod; 5. First transverse sliding plate; 6. Second drive motor; 7. Transverse extension rod; 8. Connecting pipe; 9. Transverse rotating rod; 10. Spiral blade; 11. Blocking pipe; 12. Circular rotating block; 13. Circular moving block; 14. Rectangular transmission column; 15. Circular sliding pipe; 16. Circular limiting rod; 17. Third drive motor; 18. Second transverse threaded rod; 19. Second transverse sliding plate; 20. Rectangular mounting plate; 21. Rectangular transmission rod; 22. Transverse smooth rod; 23. Vertical mounting block; 24. Rectangular mounting base; 25. Fourth drive motor; 26. Rectangular limiting column; 27. Longitudinal limiting column; 28. Rectangular sliding plate; 29. ​​Rigid spring; 30. Transverse connecting column. Detailed Implementation

[0043] The technical solutions of the embodiments of the present invention will be clearly and completely described below 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.

[0044] Please see Figures 1-7 As shown, the present invention is a water injection test device for geological exploration of water conservancy and hydropower projects, including a bottom plate 1, a top water tank 2 is provided on the top of the bottom plate 1, a second drive motor 6 is provided inside the top water tank 2, a transverse extension rod 7 is provided at the output end of the second drive motor 6, a transverse rotating rod 9 is provided at one end of the transverse extension rod 7, a spiral blade 10 is fixed on the outside of the transverse rotating rod 9, and a shielding tube 11 is also provided on the outside of the transverse rotating rod 9. The transverse rotating rod 9 and the shielding tube 11 are detached by a disassembly mechanism.

[0045] An adjustment mechanism for adjusting the angle of the top water tank 2 is also provided between the bottom plate 1 and the top water tank 2;

[0046] The top water tank 2 is equipped with a moving mechanism for moving the second drive motor 6;

[0047] The bottom of the bottom plate 1 is equipped with a detachable conveying mechanism.

[0048] The output end of the second drive motor 6 and one end of the transverse extension rod 7 are both provided with connecting pipes 8. The connecting pipes 8 and the transverse extension rod 7 and the connecting pipes 8 and the transverse rotating rod 9 are all fixed with bolts, so that the transverse extension rod 7 and the transverse rotating rod 9 can be disassembled.

[0049] The moving mechanism includes a first drive motor 3, the output end of the first drive motor 3 is fixed with a first transverse threaded rod 4, the outer side of the first transverse threaded rod 4 is threaded with a first transverse sliding plate 5, and the end of the first transverse sliding plate 5 near the second drive motor 6 is bolted to the second drive motor 6.

[0050] The disassembly mechanism includes a circular rotating block 12. The outer side of the transverse rotating rod 9 is threaded with the circular rotating block 12. One end of the circular rotating block 12 is rotatably connected to a circular moving block 13. The outer side of the circular moving block 13 is rotatably connected to multiple rectangular transmission columns 14. One end of the rectangular transmission column 14 is rotatably connected to a circular sliding tube 15. The circular moving block 13, the rectangular transmission column 14, and the circular sliding tube 15 are all rotatably connected by pins. The pins allow for better rotatable connection between the circular moving block 13, the rectangular transmission column 14, and the circular sliding tube 15.

[0051] The interior of the shielding tube 11 is provided with a limiting hole that fits with the circular sliding tube 15 with a clearance. The limiting hole allows the circular sliding tube 15 to enter the interior of the shielding tube 11.

[0052] A circular limiting rod 16 is slidably connected inside the circular sliding tube 15, and the circular limiting rod 16 is fixedly connected to the transverse rotating rod 9.

[0053] The outer side of the transverse rotating rod 9 is provided with an external thread, and the inner side of the circular rotating block 12 is provided with an internal thread. The transverse rotating rod 9 and the circular rotating block 12 are connected by the external and internal threads.

[0054] The adjustment mechanism includes a rectangular mounting plate 20. A third drive motor 17 is bolted to one end of the rectangular mounting plate 20. A second transverse threaded rod 18 is fixed to the output end of the third drive motor 17. A second transverse sliding plate 19 is threaded to the outer side of the second transverse threaded rod 18. A transverse smooth rod 22 is fixed to one end of the rectangular mounting plate 20 and on both sides of the second transverse threaded rod 18. The transverse smooth rod 22 passes through the interior of the second transverse sliding plate 19 and is slidably connected to the second transverse sliding plate 19, so that the second transverse sliding plate 19 can slide on the outer side of the transverse smooth rod 22.

[0055] A rectangular transmission rod 21 is rotatably connected to the top of the second horizontal sliding plate 19, and the top of the rectangular transmission rod 21 is rotatably connected to the top water tank 2.

[0056] A vertical mounting block 23 is also fixed to one end of the top of the bottom plate 1. The top of the vertical mounting block 23 is rotatably connected to the top water tank 2 by a pin. The pin allows the top water tank 2 to rotate on the top of the vertical mounting block 23.

[0057] The conveying mechanism includes a rectangular mounting base 24. The bottom of the bottom plate 1 is provided with a rectangular mounting base 24. Multiple rotating rollers are evenly distributed on both sides of the rectangular mounting base 24. The multiple rotating rollers are connected to each other by a track.

[0058] The rectangular mounting base 24 houses a fourth drive motor 25, the output of which is connected to one of the rotating rollers.

[0059] The conveying mechanism also includes rectangular limiting posts 26. Both ends of the top of the rectangular mounting base 24 are fixed with rectangular limiting posts 26. Both ends of the bottom plate 1 are slidably connected with longitudinal limiting posts 27. The rectangular limiting posts 26 have a limiting groove with clearance fit between the longitudinal limiting posts 27 and the rectangular limiting posts 26, so that the longitudinal limiting posts 27 can enter the interior of the rectangular limiting posts 26.

[0060] A rectangular sliding plate 28 is fixed on the outside of the longitudinal limiting post 27. A rigid spring 29 is also provided at one end of the rectangular sliding plate 28 and on the outside of the longitudinal limiting post 27. A rectangular sliding groove is provided inside the bottom plate 1. The bottom plate 1 and the rectangular sliding plate 28 are slidably connected through the rectangular sliding groove. The rectangular sliding groove allows the rectangular sliding plate 28 to slide inside the bottom plate 1.

[0061] One end of each of the two rigid springs 29 is fixed with a transverse connecting post 30.

[0062] Here, the operation of the rectangular mounting plate 20 causes the second transverse threaded rod 18 to rotate. The rotation of the second transverse threaded rod 18 allows the second transverse sliding plate 19 to slide on the outside of the transverse smooth rod 22. The movement of the second transverse sliding plate 19 causes the top water tank 2 to rotate via the rectangular transmission rod 21. When the top water tank 2 is perpendicular to the ground:

[0063] The operation of the second drive motor 6 causes the transverse extension rod 7 and the transverse rotation rod 9 to rotate. The rotation of the transverse rotation rod 9 causes the shielding tube 11 to rotate. The operation of the first drive motor 3 causes the first transverse threaded rod 4 to rotate. The rotation of the first transverse threaded rod 4 causes the first transverse sliding plate 5 to slide inside the top water tank 2, thereby allowing the transverse rotation rod 9 and the shielding tube 11 to move toward the ground.

[0064] After the shielding tube 11 enters the bottom layer, the circular rotating block 12 is rotated. The rotation of the circular rotating block 12 causes the circular moving block 13 to move. The movement of the circular moving block 13, through the rectangular transmission column 14, allows the circular sliding tube 15 to slide on the outside of the circular limiting rod 16, thereby allowing the shielding tube 11 to be disassembled and installed inside the borehole to prevent the borehole from collapsing.

[0065] When this device travels in mountainous areas, the operation of the fourth drive motor 25 enables the tracks to move in the mountains.

[0066] When this device needs to be disassembled for transport, the transverse connecting column 30 is pulled to the end away from the bottom plate 1. The movement of the transverse connecting column 30 allows the longitudinal limiting column 27 to move out of the interior of the rectangular limiting column 26, thereby allowing the rectangular mounting base 24 to be disassembled. During this process, the movement of the transverse connecting column 30 causes the rigid spring 29 to be compressed.

[0067] The disassembly mechanism allows the shielding pipe 11 to be placed inside the borehole during drilling to prevent the borehole from collapsing, thus facilitating subsequent water injection experiments.

[0068] By setting up the moving mechanism and the adjusting mechanism, the top water tank 2 can be folded onto the top of the bottom plate 1, saving space. Furthermore, the disassembly of the horizontal extension rod 7 and the horizontal rotating rod 9 allows the horizontal extension rod 7 and the horizontal rotating rod 9 to be placed separately, reducing the space occupied by the device and making it easier to transport.

[0069] The conveying mechanism makes the device more adaptable to mountainous terrain, facilitating its movement in mountainous areas. It also allows the rectangular mounting base 24 to be detached from the bottom plate 1, enabling the rectangular mounting base 24 and the bottom plate 1 to be transported separately, thus facilitating the transportation of the device.

[0070] In this specification, the terms "an embodiment," "example," "specific example," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0071] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A water injection test device for geological exploration of water conservancy and hydropower projects, comprising a bottom plate (1), characterized in that, A top water tank (2) is provided on the top of the bottom plate (1). A second drive motor (6) is provided inside the top water tank (2). A horizontal extension rod (7) is provided at the output end of the second drive motor (6). A horizontal rotating rod (9) is provided at one end of the horizontal extension rod (7). A spiral blade (10) is fixed on the outside of the horizontal rotating rod (9). A shielding tube (11) is also provided on the outside of the horizontal rotating rod (9). The horizontal rotating rod (9) and the shielding tube (11) are disassembled by a disassembly mechanism. An adjustment mechanism for adjusting the angle of the top water tank (2) is also provided between the bottom plate (1) and the top water tank (2); The top water tank (2) is equipped with a moving mechanism for moving the second drive motor (6); The bottom of the bottom plate (1) is provided with a detachable conveying mechanism; The moving mechanism includes a first drive motor (3), the output end of the first drive motor (3) is fixed with a first transverse threaded rod (4), the outer side of the first transverse threaded rod (4) is threaded with a first transverse sliding plate (5), and the end of the first transverse sliding plate (5) near the second drive motor (6) is bolted to the second drive motor (6). The adjustment mechanism includes a rectangular mounting plate (20), one end of which is bolted to a third drive motor (17), the output end of which is fixed to a second transverse threaded rod (18), the outer side of which is threaded to a second transverse sliding plate (19), the top of which is rotatably connected to a rectangular transmission rod (21), the top of which is rotatably connected to the top water tank (2).

2. The water injection test device for geological exploration of water conservancy and hydropower projects according to claim 1, characterized in that, The output end of the second drive motor (6) and one end of the transverse extension rod (7) are both provided with connecting pipes (8), and the connecting pipes (8) are fixed to the transverse extension rod (7) and the transverse rotating rod (9) by bolts.

3. The water injection test device for geological exploration of water conservancy and hydropower projects according to claim 1, characterized in that, The disassembly mechanism includes a circular rotating block (12), the outer side of the transverse rotating rod (9) is threaded with the circular rotating block (12), one end of the circular rotating block (12) is rotatably connected with a circular moving block (13), the outer side of the circular moving block (13) is rotatably connected with a plurality of rectangular transmission columns (14), one end of the rectangular transmission column (14) is rotatably connected with a circular sliding tube (15), the inside of the circular sliding tube (15) is slidably connected with a circular limiting rod (16), and the circular limiting rod (16) is fixedly connected to the transverse rotating rod (9).

4. The water injection test device for geological exploration of water conservancy and hydropower projects according to claim 3, characterized in that, The circular moving block (13) is rotatably connected to the rectangular transmission column (14) and the circular sliding tube (15) by means of pins; The outer side of the transverse rotating rod (9) is provided with an external thread, and the inner side of the circular rotating block (12) is provided with an internal thread. The transverse rotating rod (9) and the circular rotating block (12) are connected by the external thread and the internal thread. The shielding tube (11) has a limiting hole inside that fits with the circular sliding tube (15) with a clearance.

5. The water injection test device for geological exploration of water conservancy and hydropower projects according to claim 1, characterized in that, A transverse smooth rod (22) is fixed at one end of the rectangular mounting plate (20) and on both sides of the second transverse threaded rod (18). The transverse smooth rod (22) passes through the interior of the second transverse sliding plate (19) and is slidably connected to the second transverse sliding plate (19). A vertical mounting block (23) is also fixed at one end of the top of the bottom plate (1), and the top of the vertical mounting block (23) is rotatably connected to the top water tank (2) by a pin.

6. The water injection test device for geological exploration of water conservancy and hydropower projects according to claim 1, characterized in that, The conveying mechanism includes a rectangular mounting base (24). The bottom of the bottom plate (1) is provided with a rectangular mounting base (24). Multiple rotating rollers are evenly distributed on both sides of the rectangular mounting base (24). The multiple rotating rollers are connected to each other by a track. The rectangular mounting base (24) is equipped with a fourth drive motor (25), and the output end of the fourth drive motor (25) is connected to one of the rotating rollers.

7. The water injection test device for geological exploration of water conservancy and hydropower projects according to claim 6, characterized in that, The conveying mechanism also includes rectangular limiting posts (26). Both ends of the top of the rectangular mounting base (24) are fixed with rectangular limiting posts (26). Both ends of the bottom plate (1) are slidably connected with longitudinal limiting posts (27). A rectangular sliding plate (28) is fixed on the outside of the longitudinal limiting post (27). A rigid spring (29) is also provided at one end of the rectangular sliding plate (28) and on the outside of the longitudinal limiting post (27). A transverse connecting post (30) is fixed at one end of the two rigid springs (29).

8. A water injection test device for geological exploration of water conservancy and hydropower projects according to claim 7, characterized in that, The rectangular limiting post (26) has a limiting groove with clearance fit between the longitudinal limiting post (27) and the interior; The bottom plate (1) has a rectangular sliding groove inside, and the bottom plate (1) and the rectangular sliding plate (28) are slidably connected through the rectangular sliding groove.

Citation Information

Patent Citations

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  • Geotechnical investigation drilling water level measuring instrument

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  • Pressurized water test device for engineering geological survey

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