Auxiliary device for water pressure test

Abstract

The utility model relates to a water pressure test auxiliary device which comprises an inserting rod and two plugs coaxially connected with the inserting rod, the two plugs are arranged in the length direction of the inserting rod, a test area is formed between the two plugs, and the plug close to the upper end of the inserting rod is provided with a connecting pipe communicated with the test area. The end, away from the test area, of the connecting pipe is connected with water supply equipment and pressurization equipment. The two plugs are driven to form test areas at different depths of the hole by adjusting the depth of the insertion rod inserted into the hole, so that permeability tests are carried out on the hole at different depths.

Description

Technical Field

[0001] This utility model relates to the field of rock mass permeability testing technology, specifically to an auxiliary device for pressure water testing. Background Technology

[0002] Borehole pressure water testing is one of the most commonly used in-situ permeability tests in engineering geological exploration. When constructing hydraulic structures on or within rock masses, it is essential to study the permeability of the rock mass within the structure area and its influence zone. Methods for determining rock mass permeability include pressure water testing, injection water testing, and pumping water testing.

[0003] Among them, the water pressure test is the most commonly used in-situ permeability test of rock mass conducted in the borehole. The specific procedure is to insert a plug into the hole during or after drilling, divide the hole by the plug, and use the hole above the top of the plug as the test area. Then, water is sent into the test area at different pressures to determine the corresponding flow rate value, and the permeability of the rock mass is calculated accordingly.

[0004] However, the above-mentioned test method has certain limitations. The test area depends on the placement of the embolization plug. All holes above that position are considered test areas. That is, moving the embolization plug can only change the size of the test area, not its location. Therefore, it is not convenient to test a specific section of the hole. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide an auxiliary device for water pressure testing, so as to solve the problem that the test area depends on the placement of the plug, and all holes above that position are the test area. That is, moving the plug can only change the size of the test area, not the position of the test area. Therefore, it is not convenient to test a certain section of the hole.

[0006] This utility model is achieved through the following technical solution:

[0007] A pressure test auxiliary device includes a rod and two plugs coaxially connected to the rod. The two plugs are arranged along the length of the rod and form a test area between them. A connecting pipe communicating with the test area is provided on the plug near the upper end of the rod. A water supply device and a pressurizing device are connected to the end of the connecting pipe away from the test area.

[0008] Further defined, the embolism is elastic and has an annular internal hollow shape. Each of the two embolism cavities is provided with a support assembly that can support the horizontal extension of the embolism. The support assembly includes multiple support parts and a drive part for driving the support parts to slide along the radial direction of the embolism. The multiple support parts are evenly distributed in an annular shape with the insertion rod as the axis.

[0009] Further specifying, the drive unit includes a slide rod that extends in the same direction as the connecting rod, the slide rod being coaxial with and slidably connected to the insertion rod, and the upper end of the slide rod being located outside the upper end of the connecting rod.

[0010] Further defining the support portion, the support portion includes a support block and a support rod, the support rod being located between the slide rod and the support block, the two ends of the support rod being hinged to the support block and the slide rod respectively, and the side of the support block away from the support rod abutting against the inner wall of the plug.

[0011] Further, the side of the plug that contacts the insertion rod has multiple perforations, and the multiple perforations are evenly distributed in a ring around the insertion rod as the axis, with the multiple support rods passing through the perforations one by one.

[0012] Further defined, the insertion rod includes a first rod body and a second rod body sleeved outside the first rod body, the first rod body and the second rod body are movable in the direction of their extension respectively, and the two plugs are respectively installed on the first rod body and the second rod body.

[0013] Further defined, the slide bar includes a third rod and a fourth rod sleeved outside the third rod, the third rod and the fourth rod are movable in the direction of their extension, and the third rod and the fourth rod are respectively connected to the support portion of the two plugs.

[0014] Further specified, the outer walls of the third rod and the fourth rod are respectively provided with a first locking block and a second locking block, and elastic support members are provided between the first locking block and the second locking block and the third rod and the fourth rod;

[0015] The second rod body is provided with a plurality of limiting holes for the ends of the first and second blocks away from the elastic support to pass through, and the plurality of limiting holes are all located on the sliding trajectory of the first and second blocks.

[0016] Further specifying, the fourth rod is provided with a sliding groove extending along the sliding direction of the third rod, and the first locking block slides in cooperation with the sliding groove.

[0017] Furthermore, the second, third, and fourth rods are each provided with a handle at the end away from the first rod, and the handles of the third and fourth rods are located on the same sliding trajectory.

[0018] The beneficial effects of this utility model are as follows:

[0019] By adjusting the depth of the insertion rod into the hole, two plugs are moved to form test areas at different depths of the hole, thereby conducting permeability tests at different depths of the hole.

[0020] Other advantages, objectives, and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination and study, or may be learned from practice of this invention. The objectives and other advantages of this invention can be realized and obtained through the following description. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2 This is a cross-sectional view of the water pressure testing auxiliary device of this utility model;

[0023] Figure 3 This is a three-dimensional structural diagram of the third and fourth rods of this utility model;

[0024] Figure 4 This is a cross-sectional view of the embolization device of this utility model.

[0025] In the picture:

[0026] 1. Insert rod; 101. First rod body; 102. Second rod body; 2. Plug; 201. Perforation; 3. Connecting pipe; 4. Sliding rod; 401. Third rod body; 402. Fourth rod body; 5. Support block; 501. Support rod; 6. First locking block; 7. Second locking block; 8. Elastic support component; 9. Limiting hole; 10. Sliding groove; 11. Handle. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0029] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0030] In the above description of this utility model, it should be noted that the terms "one side," "the other side," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. 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. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0031] Furthermore, terms such as "identical" do not imply that components must be absolutely identical; minor differences are permissible. The term "perpendicular" simply means that the positional relationship between components is more perpendicular than "parallel," not that the structure must be perfectly perpendicular; a slight tilt is acceptable.

[0032] Please see Figure 1-4 This utility model provides a technical solution: a water pressure test auxiliary device, including a rod 1 and two plugs 2 coaxially connected to the rod 1. The two plugs 2 are arranged along the length of the rod 1 and form a test area between them. The plug 2 near the upper end of the rod 1 is provided with a connecting pipe 3 that communicates with the test area. The end of the connecting pipe 3 away from the test area is connected to a water supply device and a pressurizing device.

[0033] In this scheme, the operator holds the insertion rod 1 and inserts one end with the plug 2 into the rock cavity to be tested for permeability. With the cooperation of the two plugs 2 and the inner wall of the rock cavity, the area between the two plugs 2 and the rock cavity constitutes the test area.

[0034] Specific usage instructions:

[0035] Step 1: The operator drills the hole to be tested in the rock mass using drilling equipment;

[0036] Step 2: The operator holds the insertion rod 1 and inserts it into the hole with the end containing the plug 2 facing towards the end;

[0037] Step 3: The test area is formed by the cooperation of two plugs 2 and the inner wall of the hole, and the permeability test is carried out by water supply and pressurization through the connecting pipe 3;

[0038] Step 4: The operator adjusts the insertion depth of the insertion rod 1 so that the two plugs 2 move synchronously within the hole, thereby creating test areas of different depths within the hole.

[0039] While conducting a permeability test on a hole using the pressure water test auxiliary device of this application, the device can also adjust the depth of the insertion of the rod 1 into the hole to drive the two plugs 2 to form test areas at different depths of the hole, thereby conducting a permeability test on the hole at different depths.

[0040] In step three above, a water pump and pressurizing equipment are used to pressurize clean water into the borehole test area through a connecting pipe. Based on the relationship between the amount of water injected and the applied pressure within a certain period of time, the relative permeability of the rock mass and the degree of fracture development can be calculated.

[0041] In this embodiment, the plug 2 is elastic and has an annular hollow interior. Each of the two plug 2 cavities is provided with a support assembly that can support the horizontal extension of the plug 2. The support assembly includes multiple support parts and a driving part for driving the support parts to slide along the radial direction of the plug 2. The multiple support parts are evenly distributed in an annular shape with the insertion rod 1 as the axis.

[0042] In this design, the support parts can slide away from the axis of the plug 2, thereby expanding the multiple support parts. Since the support parts are in contact with the inner wall of the plug 2, the radius of the plug 2 is increased. Conversely, after the plug 2 has been expanded, the support parts can slide closer to the axis of the plug 2, thereby retracting the multiple support parts. Since the plug 2 is elastic, the radius of the plug 2 is reduced under the action of the elastic force of the plug 2.

[0043] The embolization plug 2 can be made of rubber.

[0044] In this embodiment, the driving unit includes a slide rod 4 that extends in the same direction as the connecting rod. The slide rod 4 is coaxial with the insertion rod 1 and slidably connected. The upper end of the slide rod 4 is located outside the upper end of the connecting rod.

[0045] In this design, the rod body is hollow, and the sliding rod 4 slides in conjunction with the rod body. As it slides upward or downward, it drives the support part to expand or retract.

[0046] In this embodiment, the support part includes a support block 5 and a support rod 501. The support rod 501 is located between the slide rod 4 and the support block 5. The two ends of the support rod 501 are respectively hinged to the support block 5 and the slide rod 4. The side of the support block 5 away from the support rod 501 abuts against the inner wall of the plug 2.

[0047] In this design, the support rod 501 is installed at an angle, with the end of the support rod 501 hinged to the support block 5 being higher than the end of the support rod 501 hinged to the slide rod 4.

[0048] When the operator pulls the slide bar 4 away from the depth of the hole, the tilt angle of the support rod 501 decreases, causing the support rod 501 to push the multiple support blocks 5 in an expanded state. Conversely, with the multiple support blocks 5 in an expanded state, when the operator pushes the slide bar 4 closer to the depth of the hole, the tilt angle of the support rod 501 increases, causing the support rod 501 to pull the multiple support blocks 5 in a retracted state.

[0049] In this embodiment, a plurality of through holes 201 are provided on the side of the plug 2 that contacts the insertion rod 1. The plurality of through holes 201 are evenly distributed in a ring around the insertion rod 1, and the plurality of support rods 501 are inserted one by one into the through holes 201.

[0050] In this embodiment, the insertion rod 1 includes a first rod body 101 and a second rod body 102 sleeved outside the first rod body 101. The first rod body 101 and the second rod body 102 can move in the direction of their extension, and the two plugs 2 are respectively installed on the first rod body 101 and the second rod body 102.

[0051] In this scheme, the first rod 101 and the second rod 102 are respectively provided with external threads and internal threads at opposite ends. The two can be threadedly connected by the external threads and internal threads. Under the action of the threaded connection, the operator can rotate the two to make them move in opposite or opposite directions, thereby increasing or decreasing the overall length of the insertion rod 1, and increasing or decreasing the distance between the two plugs 2, thereby adjusting the range of the test area.

[0052] In this embodiment, the slide bar 4 includes a third rod 401 and a fourth rod 402 sleeved outside the third rod 401. The third rod 401 and the fourth rod 402 can move in the direction of their respective extensions. The third rod 401 and the fourth rod 402 are respectively connected to the support parts in the two plugs 2.

[0053] In this design, the third rod 401 is connected to the plug 2 located near the depth of the hole. Due to the sliding fit between the third rod 401 and the fourth rod 402, the operator can move the support parts inside the two plugs 2 by pulling the third rod 401 and the fourth rod 402 respectively.

[0054] Specific usage instructions:

[0055] Step 1: After inserting the insertion rod 1 into the hole, perform initial positioning by moving the plug 2 connected to the third rod body 401;

[0056] Step 2: After determining the position of the plug 2 in Step 1, pull the third rod 401 to increase the radius of the plug 2 and make it abut against the inner wall of the hole. Under the action of friction, the entire device is initially fixed.

[0057] Step 3: Rotate the second rod 102. Under the action of step 2, the first rod 101 is fixed and the second rod 102 rotates. Under the action of the external and internal threads, the second rod 102 moves closer to or further away from the first rod 101, thereby adjusting the appropriate test range.

[0058] Step 4: Pull the fourth rod 402 to increase the radius of the other plug 2, thereby completing the overall fixation of the device and determining the size and position of the test range.

[0059] In this embodiment, a first locking block 6 and a second locking block 7 are respectively provided on the outer side walls of the third rod 401 and the fourth rod 402, and an elastic support member 8 is provided between the first locking block 6 and the second locking block 7 and the third rod 401 and the fourth rod 402.

[0060] The second rod body 102 is provided with a plurality of limiting holes 9 for the ends of the first locking block 6 and the second locking block 7 away from the elastic support member 8 to pass through. The plurality of limiting holes 9 are all located on the sliding trajectory of the first locking block 6 and the second locking block 7.

[0061] In this design, when the two elastic support members 8 are in their naturally extended state, they push the first locking block 6 and the second locking block 7 away from the third rod 401 and the fourth rod 402, respectively.

[0062] In practical use, firstly, pressure is applied to the first locking block 6 and the second locking block 7 to compress the elastic support member 8 and retract it into the limiting hole 9. Then, the unnecessary limiting holes 9 are blocked with fingers or other objects, leaving only the two necessary limiting holes 9 exposed. By pulling the third rod 401 and the fourth rod 402, the first locking block 6 and the second locking block 7 are aligned with the two limiting holes 9 respectively. At this time, under the action of the elastic force of the elastic support member 8, the first locking block 6 and the second locking block 7 are pushed out and inserted into the limiting holes 9, thereby fixing the position of the third rod 401 and the fourth rod 402.

[0063] In this embodiment, the fourth rod 402 is provided with a sliding groove 10 extending along the sliding direction of the third rod 401, and the first locking block 6 is slidably engaged with the sliding groove 10.

[0064] In this solution, by setting the slide groove 10, when the third rod 401 is pulled, the first locking block 6 slides in the slide groove 10, so that the third rod 401 can be pulled smoothly.

[0065] In this embodiment, a handle 11 is provided on the end of the second rod 102, the third rod 401 and the fourth rod 402 away from the first rod 101, and the handles 11 of the third rod 401 and the fourth rod 402 are located on the same sliding trajectory.

[0066] In this design, the various handles 11 facilitate the operation of the second rod 102, the third rod 401, and the fourth rod 402 by the operator.

[0067] The handle 11 on the fourth rod 402 has a groove on the side near the handle 11 on the third rod 401. Without adjusting the third rod 401 and the fourth rod 402, the operator can directly pull the handle 11 on the fourth rod 402 to make the handle 11 on the fourth rod 402 abut against the handle 11 on the third rod 401, so that the two move synchronously in the same direction.

[0068] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A pressurized water test aid, characterized by: The utility model provides a kind of test device for testing the water leakage of pipe, including plug rod (1) and the two plugs (2) coaxially connected with plug rod (1), two described plugs (2) are arranged along the length direction of plug rod (1) and form test area between two, plug (2) close to the upper end of plug rod (1) is provided with connecting pipe (3) with test area communication, the end of connecting pipe (3) away from test area is connected with water supply equipment and pressurizing equipment; The plug rod (1) includes a first rod body (101) and a second rod body (102) sleeved outside the first rod body (101), the first rod body (101) and the second rod body (102) can move in the direction in which they extend respectively, and the two plugs (2) are installed on the first rod body (101) and the second rod body (102) respectively. The plug (2) is elastic and hollow in the ring shape, and a support assembly capable of supporting the horizontal extension of the plug (2) is arranged in the inner cavity of each plug (2), the support assembly includes a plurality of support portions and a driving portion for driving the support portions to slide in the radial direction of the plug (2), and the plurality of support portions are evenly distributed in the ring shape with the plug rod (1) as the axis.

2. The water pressure test assist device of claim 1, wherein: The driving portion includes a slide rod (4) extending in the same direction as the connecting rod, the slide rod (4) is coaxial with the plug rod (1) and is connected in a sliding manner, and the upper end of the slide rod (4) is located outside the upper end of the connecting rod.

3. The water pressure test assist device of claim 1, wherein: The support portion includes a support block (5) and a support rod (501), the support rod (501) is located between the slide rod (4) and the support block (5), both ends of the support rod (501) are hingedly connected with the support block (5) and the slide rod (4) respectively, and the side of the support block (5) away from the support rod (501) is in contact with the inner wall of the plug (2).

4. The pressure water test assist device of claim 3, wherein: The side of the plug (2) in contact with the plug rod (1) is provided with a plurality of perforations (201), the plurality of perforations (201) are evenly distributed in the ring shape with the plug rod (1) as the axis, and each support rod (501) is arranged in a perforation (201).

5. The water pressure test assist device of claim 2, wherein: The slide rod (4) includes a third rod body (401) and a fourth rod body (402) sleeved outside the third rod body (401), the third rod body (401) and the fourth rod body (402) can move in the direction in which they extend respectively, and the third rod body (401) and the fourth rod body (402) are connected with the support portions in the two plugs (2) respectively.

6. The water pressure test assist device of claim 5, wherein: First clamping blocks (6) and second clamping blocks (7) are arranged on the outer side walls of the third rod body (401) and the fourth rod body (402) respectively, and elastic supporting members (8) are arranged between the first clamping blocks (6), the second clamping blocks (7), the third rod body (401) and the fourth rod body (402). A plurality of limiting holes (9) are arranged on the second rod body (102) for the first clamping blocks (6) and the second clamping blocks (7) to pass through the ends away from the elastic supporting members (8), and the plurality of limiting holes (9) are located on the sliding tracks of the first clamping blocks (6) and the second clamping blocks (7).

7. The water pressure test assist device of claim 6, wherein: A sliding groove (10) extending in the sliding direction of the third rod body (401) is arranged on the fourth rod body (402), and the first clamping blocks (6) are in sliding cooperation with the sliding groove (10).

8. The pressure water test assist device of claim 6, wherein: The second rod body (102), the third rod body (401) and the fourth rod body (402) are provided with handles (11) on the end away from the first rod body (101), and the handles (11) of the third rod body (401) and the fourth rod body (402) are located on the same sliding track.

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