Temporary plugging device for measuring and calculating water pressure of drill hole

Abstract

The temporary plugging device comprises a plugging pipe and a plugging air bag, a plurality of fixing blocks are evenly arranged on the surface of the outer side of the top of the plugging pipe, fixing holes are formed in the upper surfaces of the fixing blocks, the plugging air bag is arranged on the lower portion of the inner side of the plugging pipe, and the top end of the plugging air bag is communicated with an air inlet pipe. The plugging air bag can be tightly attached to the inner wall of the drill hole to form effective sealing, the plugging air bag is matched with the plugging pipe to plug the drill hole, and the pressure sensor arranged on the air inlet pipe monitors the air pressure change in the plugging air bag in real time; the air pressure change in the air bag can directly reflect the water pressure condition in the drill hole, the plugging device, the pressure sensor and the like can be conveniently recycled when the plugging device needs to be dismantled after engineering is finished, operation is easy, recycling is convenient, and the equipment cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of mining engineering, in particular to a temporary blocking device for measuring and calculating borehole water pressure. Background Art

[0002] In mining projects, hydraulic pressure testing of underground boreholes (also known as hydraulic fracturing testing or hydrogeological testing) is a crucial technique used to assess the hydrogeological conditions, stability, and potential distribution of water resources within the formation. This is crucial for ensuring the safety and sustainability of mining operations, optimizing mining designs, and monitoring environmental impacts during the mining process. Traditional hydraulic pressure testing methods typically utilize direct insertion pressure gauges supplemented by plugging devices. This results in poor plugging effectiveness, and the plugging devices and pressure gauges are difficult to remove and recycle after the project is completed, increasing equipment costs. Therefore, we propose a temporary plugging device for measuring borehole water pressure. Utility Model Content

[0003] The technical problem to be solved by the present invention is to overcome the existing defects and provide a temporary sealing device for measuring the water pressure of the borehole. Air is inflated into the sealing airbag through the air inlet pipe. When the sealing airbag is inflated, it can fit tightly against the inner wall of the borehole to form an effective seal, and cooperate with the sealing pipe to form a seal for the borehole. When the sealing device needs to be dismantled after the project is completed, the sealing device and the pressure sensor can be easily recovered. The operation is simple and the recovery is convenient, which reduces the equipment cost and can effectively solve the problems in the background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a temporary sealing device for measuring the water pressure of a borehole, comprising a sealing tube and a sealing airbag, wherein a plurality of fixed blocks are evenly arranged on the top outer surface of the sealing tube, and a fixing hole is opened on the upper surface of the fixed block, and the sealing airbag is arranged at the lower part of the inner side of the sealing tube, and the top of the sealing airbag is connected to the air intake pipe, and a one-way valve and an air pressure sensor are arranged on the air intake pipe from top to bottom.

[0005] As a preferred technical solution of the present invention, the outer diameter of the blocking tube gradually decreases from top to bottom, and the shape of the inner surface of the bottom end of the blocking tube matches the shape of the blocking airbag after inflation.

[0006] As a preferred technical solution of the present invention, a pressing block is provided on the outside of the air inlet pipe. After the sealing airbag is inflated to seal the drilled hole, the pressing block is moved to the bottom end to press the sealing airbag.

[0007] As a preferred technical solution of the present invention, a sealing gasket is provided on the outer surface of the pressing block, and the sealing gasket is squeezed between the pressing block and the inner surface of the sealing tube.

[0008] As a preferred technical solution of the present invention, the outer surface of the air inlet pipe is provided with an external thread, and the inner surface of the pressing block is provided with an internal thread matching the external thread.

[0009] As a preferred technical solution of the present invention, a hexagonal block is fixedly provided on the upper surface of the pressing block, and a through groove corresponding to the air inlet pipe is opened on the hexagonal block.

[0010] As an optimal technical solution of the present invention, a rotating block is sleeved on the air intake pipe, and the rotating block is arranged above the pressing block. The lower surface of the rotating block is provided with a hexagonal groove corresponding to the hexagonal block, and the upper surface of the rotating block is provided with a through hole corresponding to the air intake pipe, and rotating handles are symmetrically arranged on both sides of the upper surface of the rotating block.

[0011] As a preferred technical solution of the present invention, a plurality of anti-slip protrusions are evenly arranged on the outer surface of the rotating handle.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: the blocking tube is fixed to the anchor bolts on the ground through the fixing holes on the fixing block, and then air is inflated into the blocking airbag through the air intake pipe. When the blocking airbag is inflated, it can closely fit the inner wall of the borehole to form an effective seal, and cooperate with the blocking tube to form a blockage of the borehole. The air pressure changes in the blocking airbag are monitored in real time by the pressure sensor arranged on the air intake pipe. Since the contact area between the blocking airbag and the inner wall of the borehole and the groundwater in the borehole is large, the air pressure changes inside the airbag can directly reflect the water pressure conditions in the borehole. When the blocking device needs to be removed after the project is completed, the blocking device and the pressure sensor can be easily recovered. The operation is simple, the recovery is convenient, and the equipment cost is reduced. If the borehole needs to be blocked after the project is completed, the upper part of the intake pipe including the one-way valve and the air pressure sensor can also be cut and recovered, and then the blocking material is filled into the blocking airbag through the air intake pipe to complete the blocking. The one-way valve and the air pressure sensor can still be easily recovered, which also reduces the equipment cost of the entire project. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural diagram of the utility model;

[0014] Figure 2 This is a side structural diagram of the present utility model;

[0015] Figure 3 This is a structural diagram of the rotating block of the utility model.

[0016] In the figure: 1 blocking tube, 2 blocking airbag, 3 air intake pipe, 4 one-way valve, 5 air pressure sensor, 6 fixing block, 7 fixing hole, 8 pressing block, 9 external thread, 10 sealing gasket, 11 hexagonal block, 12 rotating block, 13 hexagonal groove, 14 through hole, 15 rotating handle. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] See also Figure 1-3 The utility model provides a technical solution: a temporary sealing device for measuring the water pressure of a borehole, comprising a sealing tube 1 and a sealing airbag 2. A plurality of fixing blocks 6 are evenly arranged on the outer surface of the top of the sealing tube 1. Fixing holes 7 are opened on the upper surface of the fixing blocks 6. The sealing tube 1 is fixed to the anchor bolts on the ground through the fixing holes 7 on the fixing blocks 6. The anchor bolts can be pre-buried and then fixed by concrete, or other forms of fixation can be set according to the geological conditions of the drilling location, such as directly drilling a hole and then driving the anchor bolts into the ground.

[0019] The blocking airbag 2 is arranged at the lower part of the inner side of the blocking tube 1. The top of the blocking airbag 2 is connected to the air inlet pipe 3. Air is inflated into the blocking airbag 2 through the air inlet pipe 3. When the blocking airbag 2 is inflated, it can fit tightly against the inner wall of the borehole to form an effective seal, and cooperate with the blocking tube 1 to form a seal for the borehole.

[0020] The end of the air intake pipe 3 is connected to the external air pump, and a one-way valve 4 and an air pressure sensor 5 are arranged on the air intake pipe 3 from top to bottom. The one-way valve 4 allows the gas to enter the sealing air bag 2 only from the air pump through the air intake pipe 3, and the gas will not be discharged to the outside through the air intake pipe 3; the air pressure change in the sealing air bag 2 is monitored in real time by the pressure sensor 5 arranged on the air intake pipe 3. Since the contact area between the sealing air bag and the inner wall of the borehole and the groundwater in the borehole is large, the air pressure change inside the air bag can directly reflect the water pressure condition in the borehole. When the sealing device needs to be removed after the project is completed, the sealing device and the pressure sensor 5 can be easily recovered, which is simple to operate and easy to recover, reducing the equipment cost; if the borehole needs to be sealed after the project is completed, the upper part of the air intake pipe 3 including the one-way valve 4 and the air pressure sensor 5 can also be cut and recovered, and then the sealing material is filled into the sealing air bag 2 through the air intake pipe 3 to complete the sealing. The one-way valve 4 and the air pressure sensor 5 can still be easily recovered, which also reduces the equipment cost of the entire project.

[0021] Optionally, the air pressure sensor 5 can be equipped with a wireless communication module, such as a Wi-Fi module or a 5G communication module. The wireless communication module and the built-in battery or solar cell that powers it can be set at a position such as the outer top of the sealing tube 1 and be provided with a corresponding control switch. The air pressure data in the airbag can be transmitted to the remote monitoring system in real time through the wireless communication module, which facilitates data analysis and recording.

[0022] The air pressure sensor 5, wireless communication module and built-in battery used in this application are all commonly used electronic components in the prior art. Their specific structures, working principles and circuit connections are all well-known technologies and will not be described in detail here.

[0023] In a preferred technical solution, the outer diameter of the sealing tube 1 gradually decreases from top to bottom, making it easier to insert the sealing tube 1 into the drilled hole and improving the sealing performance. The shape of the inner surface of the bottom end of the sealing tube 1 matches the shape of the inflated sealing balloon 2. That is, after the balloon 2 is inflated, its upper portion fits against the inner surface of the bottom end of the sealing tube 1, which not only limits the sealing balloon 2 but also further improves the sealing performance of the drilled hole.

[0024] According to the preferred technical solution, a pressure block 8 is provided on the outside of the air inlet pipe 3. After the sealing airbag 2 is inflated to seal the drill hole, the pressure block 8 is moved to the bottom end to press the sealing airbag 2. After the sealing airbag 2 is passed through the inside of the sealing tube 1 and inflated, the pressure block 8 is moved to the upper part of the sealing airbag 2 to press and fix it, so as to improve the stability of the sealing device; a sealing gasket 10 is provided on the outer surface of the pressure block 8, and the sealing gasket 10 is squeezed between the pressure block 8 and the inner surface of the sealing tube 1. The pressure block 8 presses the sealing airbag 2 while also pressing the sealing gasket 10, filling the gap between it and the sealing tube 1, so that the sealing performance there is enhanced, thereby improving the overall sealing effect.

[0025] A further preferred technical solution is that the outer surface of the intake pipe 3 is provided with an external thread, the inner surface of the pressure block 8 is provided with an internal thread matching the external thread, and the upper surface of the pressure block 8 is fixedly provided with a hexagonal block 11, and the hexagonal block 11 is provided with a through groove corresponding to the intake pipe 3. The through groove may be provided with an internal thread matching the external thread or not. The pressure block 8 is rotated by the hexagonal block 11 to rotate and move downward, which can ensure that the pressure block 8 can compress and seal the airbag 2 and the sealing gasket 10 when not subjected to external force, thereby ensuring the sealing of the area.

[0026] An optional technical solution is that a rotating block 12 is sleeved on the intake pipe 3, and the rotating block 12 is arranged above the pressing block 8. A hexagonal groove 13 corresponding to the hexagonal block 11 is provided on the lower surface of the rotating block 12, and a through hole 14 corresponding to the intake pipe 3 is provided on the upper surface of the rotating block 12. Rotating handles 15 are symmetrically provided on both sides of the upper surface of the rotating block 12. After the sealing airbag 2 is inflated, the rotating block 12 is moved downward so that its hexagonal groove 13 is stuck on the hexagonal block 11, and then the rotating handle 15 is rotated to make the rotating block 12 drive the hexagonal block 11 to rotate, thereby making the pressing block 8 move downward through the thread to compress the sealing airbag 2 and the sealing gasket 10, etc.

[0027] Further optionally, a plurality of anti-slip protrusions are evenly provided on the outer surface of the rotating handle 15 , so that the operation of the rotating handle 15 is more convenient and stable.

[0028] The undisclosed parts of the present invention are all prior art, and their specific structures, materials and working principles will not be described in detail. Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A temporary plugging device for measuring borehole water pressure, comprising a plugging tube (1) and a plugging airbag (2), characterized in that: A plurality of fixing blocks (6) are evenly arranged on the outer surface of the top of the blocking tube (1), and fixing holes (7) are opened on the upper surface of the fixing blocks (6). The blocking airbag (2) is arranged at the lower part of the inner side of the blocking tube (1), and the top end of the blocking airbag (2) is connected to the air intake pipe (3). The air intake pipe (3) is provided with a one-way valve (4) and an air pressure sensor (5) in sequence from top to bottom.

2. A temporary plugging device for measuring borehole water pressure according to claim 1, characterized in that: The outer diameter of the blocking tube (1) gradually decreases from top to bottom, and the shape of the inner surface of the bottom end of the blocking tube (1) matches the shape of the blocking airbag (2) after inflation.

3. The temporary plugging device for measuring borehole water pressure according to claim 1, characterized in that: A pressing block (8) is provided on the outside of the air inlet pipe (3); after the sealing airbag (2) is inflated to seal the drilled hole, the pressing block (8) is moved to the bottom end to press the sealing airbag (2).

4. A temporary plugging device for measuring borehole water pressure according to claim 3, characterized in that: A sealing gasket (10) is provided on the outer surface of the pressing block (8), and the sealing gasket (10) is squeezed between the pressing block (8) and the inner surface of the sealing tube (1).

5. A temporary plugging device for measuring borehole water pressure according to claim 3 or 4, characterized in that: The outer surface of the air inlet pipe (3) is provided with an external thread, and the inner surface of the pressing block (8) is provided with an internal thread matching the external thread.

6. A temporary plugging device for measuring borehole water pressure according to claim 5, characterized in that: A hexagonal block (11) is fixedly provided on the upper surface of the pressing block (8), and a through groove corresponding to the air inlet pipe (3) is provided on the hexagonal block (11).

7. A temporary plugging device for measuring borehole water pressure according to claim 6, characterized in that: A rotating block (12) is sleeved on the air inlet pipe (3), and the rotating block (12) is arranged above the pressing block (8). A hexagonal groove (13) corresponding to the hexagonal block (11) is provided on the lower surface of the rotating block (12), and a through hole (14) corresponding to the air inlet pipe (3) is provided on the upper surface of the rotating block (12). Rotating handles (15) are symmetrically provided on both sides of the upper surface of the rotating block (12).

8. The temporary plugging device for measuring borehole water pressure according to claim 7, characterized in that: The outer surface of the rotating handle (15) is evenly provided with a plurality of anti-slip protrusions.

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