Device for monitoring water leakage in water pressure test process

Abstract

The utility model belongs to the technical field of water-power engineering survey design tests, and provides a device for monitoring water leakage in a water pressure test process. Comprising a water pressure test water inlet pipe, a water pressure test water passing pipe, a water stop capsule, an osmometer and an osmometer data line, the water pressure test water inlet pipe is communicated with the water pressure test water passing pipe and is connected to the central area of the water stop capsule in a penetrating manner, and the connecting parts of the water pressure test water inlet pipe, the water pressure test water passing pipe and the water stop capsule are sealed; the water stopping capsule can be pressed into water to expand, and when the water stopping capsule is pressed into water to expand through the water pressing device, the outer wall of the water stopping capsule is tightly attached to the inner wall of the drill hole to stop water; the osmometer is arranged on the upper side of the water stop capsule; the osmometer data line is connected with the osmometer and is used for transmitting data monitored by the osmometer to terminal equipment. The water leakage condition in the water pressure test process can be found in time, test data are timely and accurate, and the device is suitable for drilling holes of different sizes.

Description

Technical Field

[0001] This utility model belongs to the field of hydropower engineering survey, design and testing technology, and specifically relates to a device for monitoring water leakage during a pressure test. Background Technology

[0002] Borehole pressure water testing in water conservancy and hydropower projects is the most commonly used in-situ permeability test in engineering geological exploration. Its main purpose is to determine the permeability of rock masses, providing fundamental data for evaluating their permeability characteristics and designing seepage control measures. During field borehole pressure water testing, water is used as the medium to test the permeability of a test section of rock mass under water pressure. Ensuring that water does not leak out of the test section through the test pipeline, its joints, and the stop plugs is crucial for the success of the test. Therefore, determining whether water leaks out through the pipeline, its joints, and the stop plugs during the pressure water test is a problem that urgently needs to be solved. Utility Model Content

[0003] This utility model aims to address the technical problems existing in the prior art by providing a device that can promptly detect water leakage during water pressure testing, provide timely and accurate test data, and is applicable to water pressure testing of boreholes of different sizes for monitoring water leakage.

[0004] To achieve the above technical objectives, the present invention adopts the following technical solution:

[0005] A device for monitoring water leakage during a pressure test includes a pressure test inlet pipe, a pressure test water passage pipe, a water-stop capsule, a piezometer, and a piezometer data cable;

[0006] The pressure test inlet pipe is connected to the pressure test outlet pipe and passes through the central area of ​​the water-stop capsule. The connection between the pressure test inlet pipe, the pressure test outlet pipe and the water-stop capsule is sealed.

[0007] The water-stopping capsule can be expanded by water. When the water-stopping capsule is expanded by water-pressing device, the outer wall of the water-stopping capsule is in close contact with the inner wall of the drill hole to stop water.

[0008] The osmometer is located on the upper side of the water-stopping capsule;

[0009] The piezometer data cable is connected to the piezometer and is used to transmit the data monitored by the piezometer to the terminal device.

[0010] Optionally, the water-stopping capsule includes a top, a middle, and a bottom from top to bottom. The middle part of the water-stopping capsule can be expanded by water. When the middle part of the water-stopping capsule expands by water, the outer wall of the middle part of the water-stopping capsule is in close contact with the inner wall of the drilled hole to stop water.

[0011] Optionally, a partition plate is provided between the top of the water-stopping capsule and the osmotic pressure gauge.

[0012] Optionally, the partition plate is a circular plate, the pressure test inlet pipe is connected through the middle of the partition plate, and the connection between the partition plate and the pressure test inlet pipe is sealed.

[0013] Optionally, a pad is also provided between the partition plate and the piezometer.

[0014] Optionally, the top of the water-stop capsule is fixedly connected to the bottom of the partition plate, and the top of the partition plate is fixedly connected to the bottom of the pad.

[0015] Optionally, the water-pressing device is connected to a water-pressing pipe, which passes sequentially through the pad, the partition plate, and the top of the water-stopping capsule, and connects to the middle of the water-stopping capsule.

[0016] Optionally, the terminal device is a water pressure monitoring device.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] (1) This utility model can detect water leakage in the test process in a timely manner, find and solve problems as early as possible, ensure the successful completion of the water pressure test, obtain test data that is true and reliable, and the whole device has a simple structure and is easy to operate, and has strong practicality.

[0019] (2) This utility model achieves real-time transmission and visual analysis of the water pressure test process by linking the piezometer with the water pressure test equipment and by setting up components such as the piezometer, water-stop capsule, water pressure device, and water pressure monitoring equipment. Once leakage occurs at the contact surface between the water-stop capsule and the rock wall or leakage occurs around the plug, the abnormality of the water pressure test can be detected immediately, and the water pressure monitoring equipment can be used to warn the operator immediately. Compared with the traditional manual inspection method, the time for discovering test problems is greatly shortened, and the test data distortion caused by failure to discover problems such as water-stop plug or leakage around the plug is effectively avoided. This provides reliable data for evaluating the permeability characteristics of the rock mass and designing seepage control measures.

[0020] (3) By setting a water-stopping capsule, the expandable water-stopping capsule can fit tightly to the surface of irregular drill holes with different diameters. There is no need to design different water-stopping plugs according to different drill hole sizes. The applicability can be adjusted according to the different drill hole sizes. Moreover, compared with traditional water-stopping plugs, the water-stopping effect is better and the applicability is stronger. Attached Figure Description

[0021] Figure 1This is a schematic diagram of the device for monitoring leakage during a water pressure test according to an embodiment of the present invention.

[0022] Figure 2 This is a schematic diagram of the working state of the device for monitoring water leakage during the pressure test process according to an embodiment of the present invention.

[0023] The reference numerals in the attached diagrams are as follows: 1. Water inlet pipe for pressure test; 2. Water outlet pipe for pressure test; 3. Water-stop capsule; 31. Top of water-stop capsule; 32. Middle of water-stop capsule; 33. Bottom of water-stop capsule; 4. Piezometer; 5. Piezometer data cable; 6. Water pressure device; 61. Water pressure pipe; 7. Terminal equipment; 8. Divider plate; 9. Pad plate; 10. Inner wall of borehole; 11. Test section for pressure test. Detailed Implementation

[0024] 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.

[0025] In the description of this utility model, it should be understood that the terms "bottom", "top", "middle", "upper", "inner", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] Example 1

[0028] Combination Figure 1 As shown, this utility model embodiment provides a device for monitoring water leakage during a pressure test, including a pressure test inlet pipe 1, a pressure test water passage pipe 2, a water-stopping capsule 3, a piezometer 4, and a piezometer data cable 5;

[0029] The pressure test inlet pipe 1 is connected to the pressure test outlet pipe 2 and passes through the central area of ​​the water-stop capsule 3. The connection between the pressure test inlet pipe 1, the pressure test outlet pipe 2 and the water-stop capsule 3 is sealed.

[0030] The water-stopping capsule 3 can be expanded by water. When the water-stopping capsule 3 is expanded by water-pressing device 6, the outer wall of the water-stopping capsule 3 is in close contact with the inner wall of the drill hole to stop water.

[0031] The osmometer 4 is disposed on the upper side of the water-stopping capsule 3;

[0032] The piezometer data line 5 is connected to the piezometer 4 and is used to transmit the data monitored by the piezometer 4 to the terminal device 7.

[0033] Example 2

[0034] This utility model provides a device for monitoring water leakage during a pressure test, including a pressure test inlet pipe 1, a pressure test water passage pipe 2, a water-stopping capsule 3, a piezometer 4, and a piezometer data cable 5;

[0035] The pressure test inlet pipe 1 is connected to the pressure test outlet pipe 2 and passes through the central area of ​​the water-stop capsule 3. The connection between the pressure test inlet pipe 1, the pressure test outlet pipe 2 and the water-stop capsule 3 is sealed.

[0036] The water-stopping capsule 3 can be expanded by water. When the water-stopping capsule 3 is expanded by water-pressing device 6, the outer wall of the water-stopping capsule 3 is in close contact with the inner wall of the drill hole to stop water.

[0037] The osmometer 4 is disposed on the upper side of the water-stopping capsule 3;

[0038] The piezometer data line 5 is connected to the piezometer 4 and is used to transmit the data monitored by the piezometer 4 to the terminal device 7;

[0039] Based on this, in this embodiment, the water-stopping capsule 3 includes, from top to bottom, a top 31, a middle 32, and a bottom 33. The middle 32 can be expanded by pressing in water. When the middle 32 expands by pressing in water, the outer wall of the middle 32 is in close contact with the inner wall of the drilled hole to stop water.

[0040] As a preferred embodiment, a partition plate 8 is provided between the top 31 of the water-stopping capsule and the osmotic pressure gauge 4;

[0041] Furthermore, the partition plate 8 is a circular plate, and the pressure test inlet pipe 1 is connected through the middle of the partition plate 8. The connection between the partition plate 8 and the pressure test inlet pipe 1 is sealed.

[0042] As a preferred embodiment, a pad 9 is also provided between the partition plate 8 and the piezometer 4.

[0043] Furthermore, the top 31 of the water-stop capsule is fixedly connected to the bottom of the partition plate 8, and the top of the partition plate 8 is fixedly connected to the bottom of the pad plate 9;

[0044] Furthermore, the water-pressing device 6 is connected to a water-pressing pipe 61, which passes through the pad 9, the partition plate 8, and the top 31 of the water-stopping capsule in sequence, and is connected to the middle 32 of the water-stopping capsule.

[0045] As a preferred embodiment, the terminal device 7 is a water pressure monitoring device;

[0046] Specifically, in combination Figure 2 As shown, when a water pressure test is required, firstly, the piezometer 4 is installed on the pad 9, and the piezometer 4 and the water pressure monitoring device are connected together using the piezometer data cable 5; then, water is pressurized into the water-stop capsule 3 through the water-pressurizing device 6 and the water-pressurizing pipe 61, causing the water-stop capsule 3 to expand, and the outer wall of the water-stop capsule 3 to tightly adhere to the inner wall 10 of the borehole, thus achieving a water-stopping effect; the water pressure test section 11 is constructed as a space that is only hydraulically connected to the outside, and water pressure is applied to the water pressure test section 11 through the water pressure test inlet pipe 1 and the water pressure test outlet pipe 2, thus pressurizing the rock mass of the water pressure test section 11. During the water pressure test, if leakage or blockage occurs at the contact surface between the water-stop capsule 3 and the rock wall, the water in the test section 11 will bypass the water-stop capsule 3 through the borehole wall rock and reach the upper part of the pad 9. The piezometer 4 will then transmit the water pressure change at this location to the water pressure monitoring equipment outside the borehole opening via the piezometer data line 5. The water pressure test personnel will immediately know that there is a leakage in the water pressure test, and can then quickly take corresponding measures to produce a qualified water pressure test, providing accurate water pressure test data for hydropower projects.

[0047] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. Any modifications, equivalent substitutions, and improvements made within the scope of this utility model application should be included within the protection scope of this utility model.

Claims

1. A device for monitoring leakage of water during a pressurized water test procedure, comprising: The pressure water test inlet pipe, the pressure water test water pipe, the water stop capsule, the osmometer and the osmometer data line are included. The pressure water test inlet pipe is communicated with the pressure water test water pipe and penetrates the center area of the water stop capsule. The water stop capsule can be pressed into water to expand. The osmometer is arranged on the upper side of the water stop capsule. The osmometer data line is connected with the osmometer and is used for transmitting the data monitored by the osmometer to the terminal equipment.

2. The apparatus for monitoring leakage of water in a pressurized water test procedure according to claim 1, wherein The water stop capsule includes a water stop capsule top, a water stop capsule middle and a water stop capsule bottom from top to bottom.

3. The apparatus of claim 2, wherein, The water stop capsule middle can be pressed into water to expand.

4. The apparatus for monitoring leakage of water in a pressurized water test procedure according to claim 3, wherein The water stop capsule top and the osmometer are provided with a partition plate.

5. The apparatus for monitoring leakage of water in a pressurized water test procedure according to claim 3, wherein The partition plate is a circular plate.

6. The apparatus for monitoring leakage of a pressurized water test procedure as claimed in claim 5, wherein, The pressure water test inlet pipe penetrates the middle of the partition plate.

7. The apparatus of claim 6, wherein, The partition plate and the pressure water test inlet pipe are sealed.

8. The apparatus of any one of claims 1-7, wherein, The partition plate and the osmometer are further provided with a backing plate. The water stop capsule top and the bottom of the partition plate are fixedly connected. The top of the partition plate and the bottom of the backing plate are fixedly connected. The pressure water device is connected with a pressure water pipe. The terminal equipment is a water pressure monitoring equipment.

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