Pressurized water test device for engineering geological survey

Abstract

The utility model relates to the technical field of geological survey, in particular to a water pressure test device for engineering geological survey, which comprises an integrated pipe, an upper plug, a lower plug, a first connecting pipe and a second connecting pipe. A partition plate is arranged in the integrated pipe, the interior of the integrated pipe is divided into a first cavity and a second cavity through the partition plate, first water injection holes communicated with the first cavity are formed in the side wall of the upper portion and the side wall of the lower portion of the integrated pipe, and a second water injection hole communicated with the second cavity is formed in the side wall of the middle of the integrated pipe. The upper plug and the lower plug are both of a hollow cylinder structure, fixedly arranged on the upper portion and the lower portion of the integrated pipe in a sleeving mode respectively and communicated with the first water injection holes in the upper portion and the lower portion of the integrated pipe respectively. The first connecting pipe and the second connecting pipe are both arranged at the upper end of the integrated pipe, the first connecting pipe is communicated with the first cavity, and the second connecting pipe is communicated with the second cavity.

Description

Technical Field

[0001] This utility model relates to the field of geological exploration technology, and more specifically, to a pressure water test device for engineering geological exploration. Background Technology

[0002] Current water conservancy projects, such as deep-buried tunnels, high dams, and karst formations, often involve drilling depths exceeding 300 meters. The drilling process requires in-situ water pressure tests. During deep-hole drilling, the borehole inclination must be maintained to prevent borehole failures. Therefore, wireline drilling is commonly used. Wireline core drilling is characterized by its finer core samples: an 80mm outer diameter drill bit, a 78mm outer diameter drill rod, a 60mm outer diameter core tube, and an approximately 52mm inner diameter. The extracted core sample has an outer diameter of approximately 50mm, which meets the minimum size requirement for rock sample testing. This results in a relatively small inner diameter borehole and necessitates water pressure tests every 5 meters. Using conventional top-pressure water-stopping equipment, drilling must be initiated and de-injected every 5 meters. At deeper depths, this time alone can take 3-4 hours, significantly slowing down the drilling rate. The advantages of double-plug water-stopping become apparent. After drilling is complete, upper and lower plugs are used for water-stopping, improving drilling efficiency and allowing for concentrated water pressure tests.

[0003] The existing double-plug water pressure testing device includes a water-stopping device and a water supply device. The water-stopping device includes an upper plug, a lower plug, a pressure-pressing pipe, and a hydraulic device. The hydraulic device is located on the ground and is connected to the upper and lower plugs sequentially through the pressure-pressing pipe. The water supply device includes a permeable perforated pipe and a water pipe connecting the perforated pipe and the ground equipment. Both the upper and lower plugs are hollow cylinders. The upper plug is fitted onto the outside of the water pipe, and the lower plug is fitted onto the lower end of the perforated pipe. The pressure-pressing pipe between the upper and lower plugs is located on the outside of the perforated pipe. When using this existing double-plug water pressure testing device, the water-stopping device and the water supply device must first be assembled. Secondly, when applied to holes with small inner diameters, the difference in outer diameter between the upper and lower plugs and the perforated pipe is not significant, making it inconvenient to install a pressure-pressing pipe between the upper and lower plugs. Utility Model Content

[0004] To overcome the shortcomings mentioned above, this utility model aims to provide a pressure water testing device for engineering geological exploration that can solve the above problems.

[0005] A water pressure testing device for engineering geological exploration includes an integral tube, an upper plug, a lower plug, a first connecting pipe, and a second connecting pipe. The integral tube has a partition inside, dividing the tube into a first cavity and a second cavity. The upper and lower sidewalls of the integral tube have first water injection holes communicating with the first cavity, and the middle sidewall of the integral tube has a second water injection hole communicating with the second cavity. The upper and lower plugs are both hollow cylindrical structures, fixedly sleeved on the upper and lower parts of the integral tube, respectively, and communicating with the first water injection holes in the upper and lower parts of the integral tube. The first and second connecting pipes are both located at the upper end of the integral tube, with the first connecting pipe communicating with the first cavity and the second connecting pipe communicating with the second cavity.

[0006] Furthermore, the integrated tube is provided with two parallel partitions, the first cavity is located on the side of the two partitions that are far apart from each other, the second cavity is located between the two partitions, and the first connecting tube includes a first connecting branch and a second connecting branch. The first connecting branch and the second connecting branch are respectively connected to the two first cavities, and the first connecting branch is connected to the second connecting branch.

[0007] Furthermore, the first water injection hole is provided on the outer side of both first cavities, and the second water injection hole is provided on both sides of the second cavity.

[0008] Furthermore, a first connector is provided at the end of the second connecting branch pipe away from the integrated pipe, and a second connector is provided at the end of the second connecting pipe away from the integrated pipe.

[0009] Furthermore, the end of the second connecting branch pipe away from the integrated pipe is connected to the second connecting pipe, the end of the second connecting pipe away from the integrated pipe is provided with a third connector, the second connecting branch pipe is provided with a first solenoid valve, and the second connecting pipe is provided with a second solenoid valve located between the second connecting branch pipe and the integrated pipe.

[0010] Furthermore, the second connecting branch pipe is connected to a drain pipe, which is located between the first connecting branch pipe and the first solenoid valve, and a third solenoid valve is installed on the drain pipe.

[0011] Furthermore, a locking device is provided above the upper plug. The locking device includes a locking plug and a locking plate. The locking plug has a hollow cylindrical structure and is fixedly sleeved on the outside of the integrated tube. The outer wall of the integrated tube has a third water injection hole that communicates with the first cavity. The locking plug communicates with the third water injection hole. The locking plate is fixed on the outside of the locking plug.

[0012] Furthermore, the multiple locking plates are distributed in a ring array.

[0013] Furthermore, the side of the locking plate away from the locking plug is provided with an anti-slip layer.

[0014] Furthermore, water nozzles are fixed to the outside of both the first and third water injection holes, and through holes are provided on the inner sides of the upper plug, lower plug, and locking plug, with the water nozzles fixedly penetrating through the through holes.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] The pressure testing device for engineering geological exploration in this utility model adopts an integrated pipe, integrating the existing perforated pipe and the pressure-pressuring pipe between the upper and lower plugs into a single structure. A partition divides the space within the integrated pipe into a first cavity and a second cavity, with a first connecting pipe and a second connecting pipe respectively communicating with the first and second cavities. One stream of water or hydraulic fluid is injected into the first cavity within the integrated pipe through the first connecting pipe, and then injected into the upper and lower plugs through the first water injection hole for water sealing. The other stream of water is injected into the second cavity within the integrated pipe through the second connecting pipe, and then injected into the borehole through the second water injection hole for pressure testing. The integrated structure eliminates the need for installing the upper and lower plugs and also eliminates the need for the pressure-pressuring pipe between them. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0018] Figure 1 This is a schematic diagram of the overall structure of the water pressure test device used for engineering geological exploration in Example 1.

[0019] Figure 2 This is a schematic diagram of the integrated tube in Example 1.

[0020] Figure 3 This is a schematic diagram of the operating status of the water pressure test device used for engineering geological exploration in Example 1.

[0021] Figure 4 This is a schematic diagram of the overall structure of the water pressure test device used for engineering geological exploration in Example 2.

[0022] Figure 5 This is a partial enlarged view of the pressure water test device used for engineering geological exploration in Example 2.

[0023] Figure 6 This is a partial structural schematic diagram of the water pressure test device used for engineering geological exploration in Example 2.

[0024] Figure 7 This is a schematic diagram of the overall structure of the water pressure test device used for engineering geological exploration in Example 3.

[0025] Figure 8 This is a partial enlarged view of the pressure water test device used for engineering geological exploration in Example 3.

[0026] Figure 9 This is a schematic diagram of the operating status of the water pressure test device used for engineering geological exploration in Example 3.

[0027] In the diagram: 1. Integrated pipe; 2. Partition plate; 3. First cavity; 4. Second cavity; 5. Second water inlet hole; 6. Upper plug; 7. Lower plug; 8. Second connecting pipe; 9. First connecting branch pipe; 10. Second connecting branch pipe; 11. First connector; 13. Third connector; 14. First solenoid valve; 15. Second solenoid valve; 16. Drain pipe; 17. Third solenoid valve; 18. Locking plug; 19. Locking plate; 20. Anti-slip layer; 21. Water tap; 22. Pressure testing pipe; 23. Hydraulic device; 24. Water pressure pipe; 25. Water storage tank; 26. Water pump; 27. Flow meter; 28. Pressure gauge. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Example 1:

[0030] like Figures 1-3 As shown, the water pressure testing device for engineering geological exploration in this embodiment includes an integral tube 1, an upper plug 6, a lower plug 7, a first connecting pipe, and a second connecting pipe 8. A partition 2 is provided inside the integral tube 1, dividing the integral tube 1 into a first cavity 3 and a second cavity 4. The upper and lower sidewalls of the integral tube 1 have first water injection holes communicating with the first cavity 3, and the middle sidewall of the integral tube 1 has a second water injection hole 5 communicating with the second cavity 4. The upper plug 6 and lower plug 7 are both hollow cylindrical structures, respectively fixedly sleeved on the upper and lower parts of the integral tube 1, and respectively communicating with the first water injection holes in the upper and lower parts of the integral tube 1. The first connecting pipe and the second connecting pipe 8 are both located at the upper end of the integral tube 1, with the first connecting pipe communicating with the first cavity 3 and the second connecting pipe 8 communicating with the second cavity 4.

[0031] Specifically, the integrated tube 1 is provided with two parallel partitions 2. The first cavity 3 is located on the side of the two partitions 2 that are far apart from each other. The second cavity 4 is located between the two partitions 2. The first connecting pipe includes a first connecting branch pipe 9 and a second connecting branch pipe 10. The first connecting branch pipe 9 and the second connecting branch pipe 10 are respectively connected to the two first cavities 3, and the first connecting branch pipe 9 and the second connecting branch pipe 10 are connected.

[0032] Each of the two first cavities 3 has a first water inlet hole on its outer side, and each of the two sides of the second cavity 4 has a second water inlet hole 5. A water nozzle 21 is fixed to the outer side of each first water inlet hole. The inner sides of the upper plug 6 and lower plug 7 have through holes that are compatible with and correspond to the water nozzle 21. The water nozzle 21 passes through each through hole and is fixedly connected to the upper plug 6 or lower plug 7. The connection method between the water nozzle 21 and the upper plug 6 and lower plug 7 can be adhesive bonding, heat fusion, or other similar methods.

[0033] In this embodiment, the end of the second connecting branch pipe 10 away from the integrated pipe 1 is provided with a first connector 11, and the end of the second connecting pipe 8 away from the integrated pipe 1 is provided with a second connector. In use, the first connector 11 is connected to the hydraulic device 23 on the ground through the pressure pipe 22, and the second connector is connected to the water tank or reservoir 25 on the ground through the pressure pipe 24. The pressure pipe 24 is also connected to a water pump 26, and a flow meter 27 and a pressure gauge 28 are provided on the pressure pipe 24.

[0034] The working principle of the water pressure testing device used for engineering geological exploration in this embodiment is as follows:

[0035] In use, the first connector 11 is connected to the hydraulic device 23 on the ground via the pressure pipe 22, and the second connector is connected to the water tank or reservoir 25 on the ground via the pressure pipe 24. The pressure pipe 24 is also connected to a water pump 26, and a flow meter 27 and a pressure gauge 28 are installed on the pressure pipe 24. One stream of water or hydraulic fluid is injected into the first cavity inside the integrated pipe 1 through the first connecting pipe, and then injected into the upper plug 6 and lower plug 7 through the first water injection hole to stop the water flow. Another stream of water is injected into the second cavity inside the integrated pipe 1 through the second connecting pipe 8, and then injected into the borehole through the second water injection hole 5 for a water pressure test. The integrated structure saves the steps of installing the upper plug 6 and lower plug 7, and also eliminates the need for the pressure pipe 22 between the upper plug 6 and lower plug 7.

[0036] Example 2:

[0037] like Figures 4-6As shown, in this embodiment, a locking device is provided above the upper plug 6. The locking device includes a locking plug 18 and a locking plate 19. The locking plug 18 has a hollow cylindrical structure and is fixedly sleeved on the outside of the integrated tube 1. The outer wall of the integrated tube 1 has a third water injection hole communicating with the first cavity 3. The locking plug 18 communicates with the third water injection hole, and the locking plate 19 is fixed to the outside of the locking plug 18. Preferably, multiple locking plates 19 are distributed in a ring array. The side of the locking plate 19 away from the locking plug 18 is provided with an anti-slip layer 20. A water nozzle 21 is also fixed to the outside of the third water injection hole. A through hole is provided on the inner side of the locking plug 18. The water nozzle 21 passes through the through hole and is fixedly connected to the locking plug 18.

[0038] By setting the fastener, water is injected into the fastening plug 18 to expand and squeeze the fastening plate 19, so that the fastening plate 19 is tightly connected to the inner wall of the borehole, thereby fixing the position of the integrated tube 1 and preventing displacement during the water pressure test.

[0039] Example 3:

[0040] like Figures 7-9 As shown, in this embodiment, the end of the second connecting branch pipe 10 furthest from the integrated pipe 1 is connected to the second connecting pipe 8. A third connector 13 is provided at the end of the second connecting pipe 8 furthest from the integrated pipe 1. A first solenoid valve 14 is provided on the second connecting branch pipe 10, and a second solenoid valve 15 is provided on the second connecting pipe 8 between the second connecting branch pipe 10 and the integrated pipe 1. A drain pipe 16 is connected to the second connecting branch pipe 10, and the drain pipe 16 is located between the first connecting branch pipe 9 and the first solenoid valve 14. A third solenoid valve 17 is provided on the drain pipe 16.

[0041] In use, the third connector 13 is connected to a water tank or reservoir 25 on the ground via a pressure pipe 24. The pressure pipe 24 is also connected to a water pump 26, and a flow meter 27 and a pressure gauge 28 are installed on the pressure pipe 24. First, open the first solenoid valve 14, close the second solenoid valve 15 and the third solenoid valve 17, and inject water into the upper plug 6, lower plug 7 and locking plug 18. Then, close the first solenoid valve 14, open the second solenoid valve 15, close the third solenoid valve 17, and inject water into the borehole between the upper plug 6 and the lower plug 7 to conduct a pressure test. After the pressure test is completed, open the third solenoid valve 17 to drain the water, reducing the volume of the upper plug 6, lower plug 7 and locking plug 18, so that the pressure test can be carried out at the next location.

[0042] The pressure test device for engineering geological exploration in this embodiment omits the pressure pipe 22 and hydraulic device 23, simplifying the installation steps.

[0043] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A water pressure testing device for engineering geological exploration, characterized in that, include: An integral tube (1) is provided with a partition (2) inside the integral tube (1). The integral tube (1) is divided into a first cavity (3) and a second cavity (4) by the partition (2). A first water injection hole communicating with the first cavity (3) is opened on the upper and lower side walls of the integral tube (1). A second water injection hole (5) communicating with the second cavity (4) is opened on the middle side wall of the integral tube (1). Upper plug (6) and lower plug (7), both of which are hollow cylindrical structures, are fixedly sleeved on the upper and lower parts of the integrated tube (1) respectively, and are respectively connected to the first water injection hole of the upper and lower parts of the integrated tube (1); The first connecting pipe and the second connecting pipe (8) are both located on the upper end of the integrated pipe (1), and the first connecting pipe is connected to the first cavity (3), and the second connecting pipe (8) is connected to the second cavity (4).

2. The pressure water testing device for engineering geological exploration according to claim 1, characterized in that, The integrated tube (1) is provided with two parallel partitions (2). The first cavity (3) is located on the side of the two partitions (2) that are far apart from each other. The second cavity (4) is located between the two partitions (2). The first connecting tube includes a first connecting branch (9) and a second connecting branch (10). The first connecting branch (9) and the second connecting branch (10) are respectively connected to the two first cavities (3), and the first connecting branch (9) and the second connecting branch (10) are connected.

3. The pressure water testing device for engineering geological exploration according to claim 2, characterized in that, The first water injection hole is provided on the outer side of both first cavities (3), and the second water injection hole (5) is provided on both sides of the second cavity (4).

4. The pressure water testing device for engineering geological exploration according to claim 3, characterized in that, The second connecting branch pipe (10) is provided with a first connector (11) at one end away from the integrated pipe (1), and the second connecting pipe (8) is provided with a second connector at one end away from the integrated pipe (1).

5. The pressure water testing device for engineering geological exploration according to claim 3, characterized in that, The end of the second connecting branch pipe (10) away from the integrated pipe (1) is connected to the second connecting pipe (8). The end of the second connecting pipe (8) away from the integrated pipe (1) is provided with a third connector (13). The second connecting branch pipe (10) is provided with a first solenoid valve (14). The second connecting pipe (8) and the second solenoid valve (15) located between the second connecting branch pipe (10) and the integrated pipe (1) are provided with a second solenoid valve (15).

6. The pressure water testing device for engineering geological exploration according to claim 5, characterized in that, The second connecting branch pipe (10) is connected to a drain pipe (16), which is located between the first connecting branch pipe (9) and the first solenoid valve (14). A third solenoid valve (17) is provided on the drain pipe (16).

7. The pressure water testing device for engineering geological exploration according to any one of claims 4-6, characterized in that, A locking device is provided above the upper plug (6). The locking device includes a locking plug (18) and a locking plate (19). The locking plug (18) has a hollow cylindrical structure and is fixedly sleeved on the outside of the integrated tube (1). The outer wall of the integrated tube (1) is provided with a third water injection hole that communicates with the first cavity (3). The locking plug (18) communicates with the third water injection hole. The locking plate (19) is fixed on the outside of the locking plug (18).

8. The pressure water testing device for engineering geological exploration according to claim 7, characterized in that, Multiple of the aforementioned locking plates (19) are distributed in a ring array.

9. The pressure water testing device for engineering geological exploration according to claim 8, characterized in that, The side of the locking plate (19) away from the locking plug (18) is provided with an anti-slip layer (20).

10. The pressure water testing device for engineering geological exploration according to claim 9, characterized in that, Water nozzles (21) are fixed on the outside of the first and third water injection holes. Through holes are provided on the inner sides of the upper plug (6), lower plug (7) and locking plug (18). The water nozzles (21) are fixedly inserted through the through holes.

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