Sealing-measuring-plugging integrated portable hole sealing device and method based on three-way one-way valve

Abstract

The invention discloses a sealing-measuring-plugging integrated portable hole sealing device and method based on a three-way one-way valve, the three-way one-way valve comprises a three-way shell, the three-way shell comprises a flat straight pipe and an upper short pipe, the left end of the flat straight pipe is provided with a flat slurry inlet, and the right end of the flat straight pipe is provided with a flat slurry outlet; the top end of the upper short pipe is provided with a one-way grout outlet, the outer contour of the upper short pipe is cylindrical, the inner wall of the upper short pipe is in an inverted cone shape with the wide upper portion and the narrow lower portion, an inverted-cone-shaped cavity with the wide upper portion and the narrow lower portion is formed in the upper short pipe, an inverted-cone-shaped sliding block corresponding to the inverted-cone-shaped cavity is arranged in the upper short pipe, and the top of the inverted-cone-shaped sliding block is connected with the bottom end of a compression spring. The top end of the pressure spring is arranged at the upper end of the upper short pipe, and the upper end of the upper short pipe extends out of the three-way shell; one-way grout discharging of the one-way grout outlet is achieved through the inverted-cone-shaped cavity, the grouting efficiency is greatly improved, and the technical problems that an existing hole sealing device is single in function and low in operation efficiency due to the fact that hole sealing, gas measuring and leaking stoppage cannot be achieved at the same time are solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of gas drainage. Specifically, it relates to a portable sealing, testing, and plugging integrated hole sealing device and method based on a three-way check valve. Background Art

[0002] Gas drainage is a key link in coal mine safety production. Its main purpose is to reduce the coal seam gas pressure and content, prevent a large amount of coal seam gas from surging into the mining space, and prevent gas explosion and coal and gas outburst accidents. However, there are many deficiencies in the hole sealing link of the existing gas drainage technology. Traditional hole sealing methods mostly use cement or polyurethane materials. These methods are complex in operation, long in hole sealing time, and difficult to guarantee the hole sealing effect, and it is easy to have air leakage in the drill hole. Most of the publicly disclosed or used hole sealing technical equipment, such as the bladder type hole sealer, can only perform one grouting. After the slurry solidifies, the hole is sealed, and subsequent grouting cannot be carried out. Although there are currently secondary hole sealing and plugging integrated grouting hole sealing processes, each plugging and grouting requires a separate grouting pipe. If multiple plugging and grouting operations are to be carried out in the later stage of gas drainage, then there are many grouting pipelines for the entire hole sealer. The complex hole sealer structure makes it difficult for the pipelines to be fully filled with slurry after the initial grouting hole sealing. Therefore, most of the plugging operations carried out in the later stage of gas drainage are only once (one grouting pipe and one plugging pipe are set for the hole sealer), which seriously affects the long-term gas drainage of a single drill hole. In addition, air leakage in the drill hole accompanies the entire process of gas drainage. Engineering technicians need to judge whether to carry out plugging and grouting for the drill hole according to the air leakage amount of the drill hole. Although the gas concentration in the drill hole can reflect the air leakage situation of the drill hole, the gas concentration is affected by the gas-bearing properties of the coal seam and cannot directly reflect the sealing quality of the drill hole. At present, there is no method to directly test air leakage on the structure of the hole sealing equipment.

[0003] In summary, the structure and function of the existing hole sealing technical equipment are unreasonable, that is: either it can only perform grouting hole sealing and cannot perform multiple plugging operations in the later stage, or it can achieve multiple plugging operations in the later stage, but the complex grouting pipeline affects the hole sealing quality of the drill hole, and it is impossible to directly test the air leakage of the drill hole in real time. The existing defects have caused the hole sealing, plugging, and air leakage testing work in the existing technical background to not form an organic whole, resulting in low quality and efficiency of gas drainage. Therefore, a portable sealing, testing, and plugging integrated hole sealing device and method based on a three-way check valve that is convenient to operate and has high safety and can simultaneously achieve hole sealing, air leakage monitoring, and plugging are needed. Summary of the Invention The purpose of the present invention is to provide a portable sealing, testing, and plugging integrated hole sealing device and method based on a three-way check valve that is convenient to operate and has high safety and can simultaneously achieve hole sealing, monitoring, and plugging.

[0004] To achieve the above purpose, the present invention adopts the following technical solutions: A portable hole-sealing device integrating sealing, testing and plugging based on a three-way one-way valve, comprising a first hole-sealing unit, a second hole-sealing unit, a third hole-sealing unit and a fourth hole-sealing unit connected in sequence from left to right. After the first hole-sealing unit, the second hole-sealing unit, the third hole-sealing unit and the fourth hole-sealing unit are connected, a placement channel communicating left and right is formed inside. A first three-purpose pipe, a second three-purpose pipe and a gas measuring pipe are installed in the placement channel. The first hole-sealing unit and the second hole-sealing unit are connected by a gas-measuring hole-sealing joint. The second hole-sealing unit and the third hole-sealing unit are connected by a first valve-equipped hole-sealing joint. The third hole-sealing unit and the fourth hole-sealing unit are connected by a second valve-equipped hole-sealing joint. The first hole-sealing unit includes a beam collector, a first hole-sealing pipe, a second hole-sealing pipe, a third valve-equipped hole-sealing joint and a first bladder. The first hole-sealing pipe and the second hole-sealing pipe are connected by the third valve-equipped hole-sealing joint. The right end of the second hole-sealing pipe is connected to the left end of the first gas-measuring hole-sealing joint. The left end of the second hole-sealing pipe is connected to the right end of the third valve-equipped hole-sealing joint. The right end of the first hole-sealing pipe is connected to the left end of the third valve-equipped hole-sealing joint. The left end of the first hole-sealing pipe is connected to the beam collector. The first bladder is sleeved outside the first hole-sealing pipe and the second hole-sealing pipe. The left end of the first bladder is fixed on the first hole-sealing pipe, and the right end of the first bladder is fixed on the second hole-sealing pipe. The second hole-sealing unit, the third hole-sealing unit and the fourth hole-sealing unit have the same structure, and each includes a third hole-sealing pipe, a fourth hole-sealing pipe, a second bladder and a fourth valve-equipped hole-sealing joint. The right end of the third hole-sealing pipe is connected to the left end of the fourth valve-equipped hole-sealing joint. The right end of the fourth hole-sealing pipe is connected to the right end of the fourth valve-equipped hole-sealing joint. The second bladder is sleeved on the third hole-sealing pipe and the fourth hole-sealing pipe. The left end of the second bladder is fixed on the third hole-sealing pipe, and the right end of the second bladder is fixed on the fourth hole-sealing pipe. The left end of the third hole-sealing pipe of the second hole-sealing unit is connected to the right end of the gas-measuring hole-sealing joint. The right end of the fourth hole-sealing pipe of the second hole-sealing unit is connected to the left end of the first valve-equipped hole-sealing joint. The left end of the third hole-sealing pipe of the third hole-sealing unit is connected to the right end of the first valve-equipped hole-sealing joint. The right end of the fourth hole-sealing pipe of the third hole-sealing unit is fully connected to the left end of the second valve-equipped hole-sealing joint. The left end of the third hole-sealing pipe of the fourth hole-sealing unit is connected to the right end of the second valve-equipped hole-sealing joint.

[0005] The beam collector includes a beam collector housing. A three-purpose elbow, a gas-measuring elbow and a drainage elbow communicating its inside and outside are installed on the beam collector housing. The right end of the three-purpose elbow is connected to the left end of the first three-purpose pipe. The right end of the drainage elbow is connected to the left end of the second three-purpose pipe. The right end of the gas-measuring elbow is connected to the left end of the gas measuring pipe. A ball valve is provided at the part of the drainage elbow located outside the housing.

[0006] The gas-measuring hole-sealing joint includes a joint housing. A right-angle elbow is provided inside the joint housing. The left end of the right-angle elbow is connected to the right end of the gas measuring pipe. The lower end of the right-angle elbow extends out of the joint housing and is connected to the gas-measuring cavity.

[0007] The structures of the first valve-equipped hole-sealing joint, the second valve-equipped hole-sealing joint, the third valve-equipped hole-sealing joint, and the fourth valve-equipped hole-sealing joint are the same and all include a hole-sealing housing. An upper part of the inner wall of the hole-sealing housing is provided with a three-way one-way valve. The three-way one-way valve includes a three-way housing. The three-way housing includes a straight pipe and an upwardly extending upper short pipe. A left end of the straight pipe is set as a straight slurry inlet, a right end of the straight pipe is provided with a straight slurry outlet, a top end of the upper short pipe is set as a one-way slurry outlet. The outer contour of the upper short pipe is cylindrical, the inner wall shape of the upper short pipe is an inverted cone that is wider at the top and narrower at the bottom. An inverted cone-shaped cavity that is wider at the top and narrower at the bottom is formed inside the upper short pipe. An inverted cone-shaped slider corresponding to the inverted cone-shaped cavity is arranged inside the upper short pipe. A bottom end of a compression spring is connected to a top of the inverted cone-shaped slider, a top end of the compression spring is set at an upper end of the upper short pipe, and the upper end of the upper short pipe extends out of the three-way housing; The upper short pipe of the three-way one-way valve of the first valve-equipped hole-sealing joint communicates with a grouting cavity, the upper short pipe of the three-way one-way valve of the second valve-equipped hole-sealing joint communicates with a leak plugging cavity, the upper short pipe of the three-way one-way valve of the third valve-equipped hole-sealing joint communicates with the inside of the first bladder, and the upper short pipe of the three-way one-way valve of the fourth valve-equipped hole-sealing joint communicates with the inside of the second bladder.

[0008] The first triple-purpose pipe includes a first segmented pipe, a second segmented pipe, a third segmented pipe, a fourth segmented pipe, a fifth segmented pipe, and a sixth segmented pipe. A left end of the first segmented pipe is connected to a triple-purpose elbow, a right end of the first segmented pipe is connected to the straight slurry inlet of the three-way one-way valve on the third valve-equipped hole-sealing joint. A left end of the second segmented pipe is connected to the straight slurry outlet of the three-way one-way valve on the third valve-equipped hole-sealing joint, a right end of the second segmented pipe is connected to the straight slurry inlet of the three-way one-way valve on the fourth valve-equipped hole-sealing joint of the second hole-sealing unit. A left end of the third segmented pipe is connected to the straight slurry outlet of the three-way one-way valve on the fourth valve-equipped hole-sealing joint of the second hole-sealing unit, a right end of the third segmented pipe is connected to the straight slurry inlet of the three-way one-way valve on the first valve-equipped hole-sealing joint. A left end of the fourth segmented pipe is connected to the straight slurry outlet of the three-way one-way valve on the first valve-equipped hole-sealing joint, a right end of the fourth segmented pipe is connected to the straight slurry inlet of the three-way one-way valve on the fourth valve-equipped hole-sealing joint of the third hole-sealing unit. A left end of the fifth segmented pipe is connected to the straight slurry outlet of the three-way one-way valve on the fourth valve-equipped hole-sealing joint of the third hole-sealing unit, a right end of the fifth segmented pipe is connected to the straight slurry inlet of the three-way one-way valve on the second valve-equipped hole-sealing joint. A left end of the sixth segmented pipe is connected to the straight slurry outlet of the three-way one-way valve on the second valve-equipped hole-sealing joint, and a right end of the sixth segmented pipe is connected to the straight slurry inlet of the three-way one-way valve on the fourth valve-equipped hole-sealing joint of the fourth hole-sealing unit.

[0009] The compression spring deformation capabilities of the three-way one-way valves in the third valve-equipped hole plugging joint, the three-way one-way valves in the fourth valve-equipped hole plugging joints of the second hole plugging unit, the three-way one-way valves in the fourth valve-equipped hole plugging joints of the third hole plugging unit, and the three-way one-way valves in the fourth valve-equipped hole plugging joints of the fourth hole plugging unit gradually weaken. Elastic rupture discs are provided on the outer surfaces of the first valve-equipped hole plugging joint and the second valve-equipped hole plugging joint, and the rupture pressure of the elastic rupture disc on the first valve-equipped hole plugging joint is lower than that of the elastic rupture disc on the second valve-equipped hole plugging joint.

[0010] The sealing-test-blocking integrated portable hole plugging method based on a three-way one-way valve is implemented based on the above-mentioned sealing-test-blocking integrated portable hole plugging device based on a three-way one-way valve, and includes the following steps: (1) Transport the first hole plugging unit, the second hole plugging unit, the third hole plugging unit, and the fourth hole plugging unit, as well as the corresponding joints, the first three-way pipe, the second three-way pipe, and the gas measuring pipe separately to the underground operation site for assembly. Ensure that the three-way elbow is tightly connected to the first three-way pipe, the drainage elbow is tightly connected to the second three-way pipe, and the gas measuring elbow is tightly connected to the gas measuring pipe, and keep the ball valve on the drainage elbow closed. (2) Insert the right end of the assembled hole plugging device into the borehole opening, then connect the external grouting pipe to the three-way elbow, connect the external return water pipe to the drainage elbow, connect the external gas measuring pipe to the gas measuring elbow, and then perform grouting through the external grouting pipe. During the grouting process, the first bladder and the second bladders of the second hole plugging unit, the third hole plugging unit, and the fourth hole plugging unit gradually expand. When the pressure reaches 0.5 MPa, the first valve-equipped hole plugging joint ruptures, and grouting of the grouting cavity starts until the pressure is maintained at 0.5 MPa. (3) Open the ball valve on the drainage elbow, inject low-pressure water into the first three-way pipe through the external grouting pipe for cleaning until clear water flows out of the drainage elbow, and then close the ball valve. (4) Inject the mucus material into the plugging cavity through the first three-way pipe. When the pressure rises above 0.75 MPa, the second valve-equipped hole plugging joint opens, the pressure drops rapidly. After the plugging cavity is filled, continue to inject the mucus material, and the injection pressure continues to rise with the injection of the mucus material until the injection stops when the pressure reaches 2 MPa. (5) During the extraction process, regularly detect the air leakage condition of the borehole through the gas measuring pipe. Once it is found that the air leakage volume increases significantly, immediately open the ball valve and perform steps (3) and (4) again.

[0011] The hole - sealing device of the present application includes a first hole - sealing unit, a second hole - sealing unit, a third hole - sealing unit, and a fourth hole - sealing unit connected in sequence from left to right. After the first hole - sealing unit, the second hole - sealing unit, the third hole - sealing unit, and the fourth hole - sealing unit are connected, a placement channel communicating left and right is formed inside. A first triple - purpose pipe, a second triple - purpose pipe, and a gas - measuring pipe are installed in the placement channel; the length of each unit does not exceed 1 meter, which is very convenient for transportation between the ground and the underground, helps to achieve convenient transportation of hole - sealing equipment, and can achieve the technical purposes of rapid production, high - quality long - term hole - sealing, and dynamic detection of air leakage in extraction boreholes.

[0012] The three - way one - way valve of the present application includes a three - way housing. The three - way housing includes a straight pipe and an upward - extending upper short pipe. The left end of the straight pipe is set as a straight slurry inlet, the right end of the straight pipe is provided with a straight slurry outlet, the top of the upper short pipe is set as a one - way slurry outlet. The outer contour of the upper short pipe is cylindrical, the inner wall shape of the upper short pipe is an inverted cone with a wider upper part and a narrower lower part, an inverted - cone cavity with a wider upper part and a narrower lower part is formed inside the upper short pipe, and an inverted - cone slider corresponding to the inverted - cone cavity is arranged inside the upper short pipe. The top of the inverted - cone slider is connected to the bottom end of a compression spring, the top end of the compression spring is set at the upper end of the upper short pipe, and the upper end of the upper short pipe extends out of the three - way housing; the one - way slurry outlet realizes one - way slurry discharge through the inverted - cone cavity, greatly improving the slurry - injection efficiency and effectively solving the technical problem that the existing hole - sealing device has a single function and cannot simultaneously achieve hole - sealing, gas - measuring, and leakage - plugging, resulting in low operation efficiency. Brief Description of the Drawings

[0013] Figure 1 is a schematic structural diagram of the hole - sealing device of the present invention.

[0014] Figure 2 is a schematic structural diagram of the first hole - sealing unit of the present invention.

[0015] Figure 3 is a schematic structural diagram of the second hole - sealing unit of the present invention.

[0016] Figure 4 is a schematic structural diagram of the first valve - equipped hole - sealing joint of the present invention.

[0017] Figure 5 is a schematic structural diagram of the gas - measuring hole - sealing joint of the present invention.

[0018] Figure 6 is a schematic structural diagram of the three - way one - way valve of the present invention. Detailed Description of the Embodiment

[0019] The following further describes the embodiments of the present invention with reference to the drawings.

[0020] Embodiment 1 As Figures 1-6As shown in the figure, a portable hole-sealing device integrating sealing, testing, and plugging based on a three-way one-way valve includes a first hole-sealing unit 1, a second hole-sealing unit 2, a third hole-sealing unit 3, and a fourth hole-sealing unit 4 connected in sequence from left to right. After the first hole-sealing unit 1, the second hole-sealing unit 2, the third hole-sealing unit 3, and the fourth hole-sealing unit 4 are connected, a placement channel communicating left and right is formed inside. A first three-way pipe 5, a second three-way pipe 6, and a gas measuring pipe 7 are installed in the placement channel; The first hole-sealing unit 1 and the second hole-sealing unit 2 are connected through a gas-measuring hole-sealing joint 8, the second hole-sealing unit 2 and the third hole-sealing unit 3 are connected through a first valve-equipped hole-sealing joint 9, and the third hole-sealing unit 3 and the fourth hole-sealing unit 4 are connected through a second valve-equipped hole-sealing joint 10; The first hole-sealing unit 1 includes a beam collector 11, a first hole-sealing pipe 12, a second hole-sealing pipe 13, a third valve-equipped hole-sealing joint 14, and a first bladder 15. The first hole-sealing pipe 12 and the second hole-sealing pipe 13 are connected through the third valve-equipped hole-sealing joint 14. The right end of the second hole-sealing pipe 13 is connected to the left end of the first gas-measuring hole-sealing joint 8, the left end of the second hole-sealing pipe 13 is connected to the right end of the third valve-equipped hole-sealing joint 14, the right end of the first hole-sealing pipe 12 is connected to the left end of the third valve-equipped hole-sealing joint 14, the left end of the first hole-sealing pipe 12 is connected to the beam collector 11, the first bladder 15 is sleeved outside the first hole-sealing pipe 12 and the second hole-sealing pipe 13, the left end of the first bladder 15 is fixed on the first hole-sealing pipe 12, and the right end of the first bladder 15 is fixed on the second hole-sealing pipe 13; The second hole-sealing unit 2, the third hole-sealing unit 3, and the fourth hole-sealing unit 4 have the same structure and each includes a third hole-sealing pipe 16, a fourth hole-sealing pipe 18, a second bladder 19, and a fourth valve-equipped hole-sealing joint 20. The right end of the third hole-sealing pipe 16 is connected to the left end of the fourth valve-equipped hole-sealing joint 20, the right end of the fourth hole-sealing pipe 18 is connected to the right end of the fourth valve-equipped hole-sealing joint 20, the second bladder 19 is sleeved on the third hole-sealing pipe 16 and the fourth hole-sealing pipe 18, the left end of the second bladder 19 is fixed on the third hole-sealing pipe 16, and the right end of the second bladder 19 is fixed on the fourth hole-sealing pipe 18; The left end of the third hole-sealing pipe 16 of the second hole-sealing unit 2 is connected to the right end of the gas-measuring hole-sealing joint 8, the right end of the fourth hole-sealing pipe 18 of the second hole-sealing unit 2 is connected to the left end of the first valve-equipped hole-sealing joint 9, the left end of the third hole-sealing pipe 16 of the third hole-sealing unit 3 is connected to the right end of the first valve-equipped hole-sealing joint 9, the right end of the fourth hole-sealing pipe 18 of the third hole-sealing unit 3 is connected to the left end of the second valve-equipped hole-sealing joint 10, and the left end of the third hole-sealing pipe 16 of the fourth hole-sealing unit 4 is connected to the right end of the second valve-equipped hole-sealing joint 10.

[0021] The beam former 11 includes a beam-forming housing, on which a triple-purpose elbow 21, a gas-measuring elbow 22, and a drain elbow 23 that communicate with the inside and outside thereof are installed. The right end of the triple-purpose elbow 21 is connected to the left end of the first triple-purpose pipe 5, the right end of the drain elbow 23 is connected to the left end of the second triple-purpose pipe 6, and the right end of the gas-measuring elbow 22 is connected to the left end of the gas-measuring pipe 7. A ball valve is provided at the part of the drain elbow 23 located outside the housing.

[0022] The gas-measuring hole-sealing joint 8 includes a joint housing 24. A right-angled elbow 25 is arranged inside the joint housing 24. The left end of the right-angled elbow 25 is connected to the right end of the gas-measuring pipe 7, and the lower end of the right-angled elbow 25 extends out of the joint housing 24 and is connected to the gas-measuring cavity 34.

[0023] The first valve-equipped hole-sealing joint 9, the second valve-equipped hole-sealing joint 10, the third valve-equipped hole-sealing joint 14, and the fourth valve-equipped hole-sealing joint 20 have the same structure and all include a hole-sealing housing 26. An on-off one-way valve 27 is arranged at the upper part of the inner wall of the hole-sealing housing 26. The on-off one-way valve 27 includes a three-way housing, and the three-way housing includes a straight pipe 28 and an upward-extending upper short pipe 29. The left end of the straight pipe 28 is set as a straight slurry inlet 30, the right end of the straight pipe 28 is provided with a straight slurry outlet 31, and the top end of the upper short pipe 29 is set as a one-way slurry outlet 32. The outer contour of the upper short pipe 29 is cylindrical, and the inner wall shape of the upper short pipe 29 is an inverted cone that is wider at the top and narrower at the bottom. An inverted cone-shaped cavity that is wider at the top and narrower at the bottom is formed inside the upper short pipe 29. An inverted cone-shaped slider 17 corresponding to the inverted cone-shaped cavity is arranged inside the upper short pipe 29. The top of the inverted cone-shaped slider 17 is connected to the bottom end of a compression spring 33, and the top end of the compression spring 33 is set at the upper end of the upper short pipe 29. The upper end of the upper short pipe 29 extends out of the three-way housing; this design of the inverted cone structure can achieve the purpose of allowing slurry to flow out only from bottom to top and not allowing slurry to enter from top to bottom. The connection method between the valve-equipped hole-sealing joints and the gas-measuring hole-sealing joint 8 and the hole-sealing pipe is plug-in connection, and the plug-in part is bonded with glue. Each joint and the beam former 11 are all made by injection molding, and the three-way housing of the on-off one-way valve 27 is also made by injection molding. The upper end of the compression spring 33 is fixed by welding a pressing piece. Similarly, each elbow is made by injection molding.

[0024] The upper short pipe 29 of the on-off one-way valve 27 of the first valve-equipped hole-sealing joint 9 communicates with the grouting cavity 35, the upper short pipe 29 of the on-off one-way valve 27 of the second valve-equipped hole-sealing joint 10 communicates with the plugging cavity 36, the upper short pipe 29 of the on-off one-way valve 27 of the third valve-equipped hole-sealing joint 14 communicates with the inside of the first bladder 15, and the upper short pipe 29 of the on-off one-way valve 27 of the fourth valve-equipped hole-sealing joint 20 communicates with the inside of the second bladder 19.

[0025] The first triple-purpose pipe 5 includes a first segmented pipe, a second segmented pipe, a third segmented pipe, a fourth segmented pipe, a fifth segmented pipe, and a sixth segmented pipe. The left end of the first segmented pipe is connected to the triple-purpose elbow 21, and the right end of the first segmented pipe is connected to the straight slurry inlet 30 of the three-way one-way valve 27 on the third valve-equipped hole-sealing joint 14. The left end of the second segmented pipe is connected to the straight slurry outlet 31 of the three-way one-way valve 27 on the third valve-equipped hole-sealing joint 14, and the right end of the second segmented pipe is connected to the straight slurry inlet 30 of the three-way one-way valve 27 on the fourth valve-equipped hole-sealing joint 20 of the second hole-sealing unit 2. The left end of the third segmented pipe is connected to the straight slurry outlet 31 of the three-way one-way valve 27 on the fourth valve-equipped hole-sealing joint 20 of the second hole-sealing unit 2, and the right end of the third segmented pipe is connected to the straight slurry inlet 30 of the three-way one-way valve 27 on the first valve-equipped hole-sealing joint 9. The left end of the fourth segmented pipe is connected to the straight slurry outlet 31 of the three-way one-way valve 27 on the first valve-equipped hole-sealing joint 9, and the right end of the fourth segmented pipe is connected to the straight slurry inlet 30 of the three-way one-way valve 27 on the fourth valve-equipped hole-sealing joint 20 of the third hole-sealing unit 3. The left end of the fifth segmented pipe is connected to the straight slurry outlet 31 of the three-way one-way valve 27 on the fourth valve-equipped hole-sealing joint 20 of the third hole-sealing unit 3, and the right end of the fifth segmented pipe is connected to the straight slurry inlet 30 of the three-way one-way valve 27 on the second valve-equipped hole-sealing joint 10. The left end of the sixth segmented pipe is connected to the straight slurry outlet 31 of the three-way one-way valve 27 on the second valve-equipped hole-sealing joint 10, and the right end of the sixth segmented pipe is connected to the straight slurry inlet 30 of the three-way one-way valve 27 on the fourth valve-equipped hole-sealing joint 20 of the fourth hole-sealing unit 4. The right end of the second triple-purpose pipe 6 is connected to the straight slurry outlet 31 of the three-way one-way valve 27 on the fourth valve-equipped hole-sealing joint 20 of the fourth hole-sealing unit 4, and returns to the beam collector through bending, connecting the right end of the drain elbow 23 and the left end of the second triple-purpose pipe 6.

[0026] The deformation capabilities of the compression springs 33 on the three-way one-way valves 27 in the third valve-equipped hole-sealing joint 14, the three-way one-way valves 27 in the fourth valve-equipped hole-sealing joints 20 of the second hole-sealing unit 2, the three-way one-way valves 27 in the fourth valve-equipped hole-sealing joints 20 of the third hole-sealing unit 3, and the three-way one-way valves 27 in the fourth valve-equipped hole-sealing joints 20 of the fourth hole-sealing unit 4 decrease in sequence. Elastic bursting discs are provided on the outer surfaces of the first valve-equipped hole-sealing joint 9 and the second valve-equipped hole-sealing joint 10, and the bursting pressure of the elastic bursting disc on the first valve-equipped hole-sealing joint 9 is lower than the bursting pressure of the elastic bursting disc on the second valve-equipped hole-sealing joint 10.

[0027] The hole-sealing device of the present application includes a first hole-sealing unit 1, a second hole-sealing unit 2, a third hole-sealing unit 3, and a fourth hole-sealing unit 4 connected in sequence from left to right. After the first hole-sealing unit 1, the second hole-sealing unit 2, the third hole-sealing unit 3, and the fourth hole-sealing unit 4 are connected, a placement channel communicating left and right is formed inside. A first triple-purpose pipe 5, a second triple-purpose pipe 6, and a gas measuring pipe 7 are installed in the placement channel; the length of each unit does not exceed 1 meter, which is very convenient for transportation between the ground and the underground, helps to realize the convenient transportation of hole-sealing equipment, and can achieve the technical purposes of rapid production, high-quality long-term hole-sealing, and dynamic detection of air leakage in drainage boreholes.

[0028] The three-way one-way valve 27 of the present application includes a three-way housing, and the three-way housing includes a straight pipe 28 and an upwardly extending upper short pipe 29. The left end of the straight pipe 28 is set as a straight slurry inlet 30, the right end of the straight pipe 28 is provided with a straight slurry outlet 31, and the top of the upper short pipe 29 is set as a one-way slurry outlet 32. The outer contour of the upper short pipe 29 is cylindrical, and the inner wall shape of the upper short pipe 29 is an inverted cone that is wider at the top and narrower at the bottom. An inverted conical cavity that is wider at the top and narrower at the bottom is formed inside the upper short pipe 29. An inverted conical slider 17 corresponding to the inverted conical cavity is arranged inside the upper short pipe 29. The top of the inverted conical slider 17 is connected to the bottom end of a compression spring 33, and the top end of the compression spring 33 is set at the upper end of the upper short pipe 29. The upper end of the upper short pipe 29 extends out of the three-way housing; one-way slurry discharge of the one-way slurry outlet 32 is realized through the inverted conical cavity. Through the design of the difficulty of deformation of the compression spring 33 in the three-way one-way valve 27 at different positions and the design of the bursting pressure of the elastic bursting discs on the first valve-equipped hole-sealing joint 9 and the second valve-equipped hole-sealing joint 10, combined with the special design forms of the first triple-purpose pipe 5 and the second triple-purpose pipe 6, the orderly injection of hole-sealing slurry into the multi-pouch and the grouting cavity 35 and the multiple injections of slurry into the leakage plugging cavity 36 after pipeline cleaning are realized, greatly improving the grouting efficiency, achieving the purpose of using a single grouting pipe for hole-sealing, leakage plugging, and various types of grouting. At the same time, the present invention can realize the dynamic monitoring of air leakage in the sealed boreholes during the drainage process, effectively solving the technical problem that the existing hole-sealing device has a single function and cannot simultaneously achieve hole-sealing, gas measurement, and leakage plugging, resulting in low operation efficiency.

[0029] Embodiment 2 The sealing-testing-leakage plugging integrated portable hole-sealing method based on a three-way one-way valve is implemented based on the above-mentioned sealing-testing-leakage plugging integrated portable hole-sealing device, and includes the following steps: (1) Transport the first hole-sealing unit 1, the second hole-sealing unit 2, the third hole-sealing unit 3, the fourth hole-sealing unit 4, and the corresponding joints, the first triple-purpose pipe 5, the second triple-purpose pipe 6, and the gas measuring pipe 7 to the underground operation site for assembly separately. Ensure that the three-way elbow 21 is tightly connected to the first triple-purpose pipe 5, the drainage elbow 23 is tightly connected to the second triple-purpose pipe 6, and the gas measuring elbow 22 is tightly connected to the gas measuring pipe 7, and keep the ball valve on the drainage elbow 23 in the closed state; (2) Insert the right end of the assembled hole-sealing device into the drilling hole. Then connect the external grouting pipe to the three-way elbow 21, connect the external water return pipe to the drainage elbow 23, and connect the external gas measuring pipe 7 to the gas measuring elbow 22. Then grout through the external grouting pipe. During the grouting process, the first bladder 15 and the second bladders 19 of the second hole-sealing unit 2, the third hole-sealing unit 3, and the fourth hole-sealing unit 4 gradually expand. When the pressure reaches 0.5 MPa, the first valve-equipped hole-sealing joint 9 bursts, and grouting starts for the grouting cavity 35 until the pressure is maintained at 0.5 MPa. (3) Open the ball valve on the drainage elbow 23 and inject low-pressure water into the first three-way pipe 5 through the external grouting pipe for cleaning until clear water flows out of the drainage elbow 23, and then close the ball valve. (4) Inject the mucilage material into the plugging cavity 36 through the first three-way pipe 5. When the pressure rises above 0.75 MPa, the second valve-equipped hole-sealing joint 10 opens, and the pressure drops rapidly. After the plugging cavity is filled, continue to inject the mucilage material. As the mucilage material is injected, the pressure continues to rise until the grouting stops when the pressure reaches 2 MPa. Then open the ball valve on the drainage elbow 23 again and inject low-pressure water into the first three-way pipe 5 through the external grouting pipe for cleaning until clear water flows out of the drainage elbow 23, and then close the ball valve (the pipeline needs to be cleaned every time after grouting).

[0030] (5) During the extraction process, irregularly detect the air leakage condition of the drilling hole through the gas measuring pipe 7. Once it is found that the air leakage volume increases significantly, immediately open the ball valve and execute step (4) again.

[0031] The above embodiments are only used to illustrate rather than limit the technical solutions of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that; still can modify the present invention or make equivalent replacements, and any modification or partial replacement without departing from the spirit and scope of the present invention shall be covered by the scope of the claims of the present invention.

Claims

1. A portable sealing device based on a three-way one-way valve that integrates sealing, testing and plugging, characterized in that: It includes a first sealing unit, a second sealing unit, a third sealing unit and a fourth sealing unit connected in sequence from left to right, wherein the first sealing unit, the second sealing unit, the third sealing unit and the fourth sealing unit are connected to form a placement channel connected to the left and right, and a first three-purpose tube, a second three-purpose tube and a gas measuring tube are installed in the placement channel; The first sealing unit and the second sealing unit are connected via a gas measuring sealing joint, the second sealing unit and the third sealing unit are connected via a first sealing joint with a valve, and the third sealing unit and the fourth sealing unit are connected via a second sealing joint with a valve; The first sealing unit includes a buncher, a first sealing tube, a second sealing tube, a third sealing joint with a valve and a first bag. The first sealing tube and the second sealing tube are connected through the third sealing joint with a valve. The right end of the second sealing tube is connected to the left end of the first gas measuring sealing joint, the left end of the second sealing tube is connected to the right end of the third sealing joint with a valve, the right end of the first sealing tube is connected to the left end of the third sealing joint with a valve, the left end of the first sealing tube is connected to the buncher, the first bag is sleeved outside the first sealing tube and the second sealing tube, the left end of the first bag is fixed on the first sealing tube, and the right end of the first bag is fixed on the second sealing tube; The second sealing unit, the third sealing unit and the fourth sealing unit have the same structure, and all include a third sealing tube, a fourth sealing tube, a second bag and a fourth sealing joint with a valve, the right end of the third sealing tube is connected to the left end of the fourth sealing joint with a valve, the right end of the fourth sealing tube is connected to the right end of the fourth sealing joint with a valve, the second bag is sleeved on the third sealing tube and the fourth sealing tube, the left end of the second bag is fixed on the third sealing tube, and the right end of the second bag is fixed on the fourth sealing tube; The left end of the third sealing tube of the second sealing unit is connected to the right end of the gas measuring sealing joint, the right end of the fourth sealing tube of the second sealing unit is connected to the left end of the first valved sealing joint, the left end of the third sealing tube of the third sealing unit is connected to the right end of the first valved sealing joint, the right end of the fourth sealing tube of the third sealing unit is connected to the left end of the second valved sealing joint, and the left end of the third sealing tube of the fourth sealing unit is connected to the right end of the second valved sealing joint.

2. The portable sealing device based on a three-way one-way valve for sealing, testing and plugging according to claim 1 is characterized in that: The clusterer includes a cluster shell, on which are installed a three-way elbow, a gas measuring elbow and a drainage elbow connecting the inside and the outside of the cluster shell. The right end of the three-way elbow is connected to the left end of the first three-way pipe, the right end of the drainage elbow is connected to the left end of the second three-way pipe, the right end of the gas measuring elbow is connected to the left end of the gas measuring pipe, and a ball valve is provided on the drainage elbow located outside the shell.

3. The portable sealing device based on a three-way one-way valve for sealing, testing and plugging according to claim 2 is characterized in that: The gas measuring and sealing joint comprises a joint shell, in which a right-angle elbow is arranged, the left end of the right-angle elbow is connected to the right end of the gas measuring pipe, and the lower end of the right-angle elbow extends out of the joint shell and is connected to the gas measuring cavity.

4. The portable sealing device based on a three-way one-way valve for sealing, testing and plugging according to claim 3 is characterized in that: The first valved sealing joint, the second valved sealing joint, the third valved sealing joint and the fourth valved sealing joint have the same structure and all include a sealing shell, a three-way one-way valve is arranged on the upper part of the inner wall of the sealing shell, the three-way one-way valve comprises a three-way shell, the three-way shell comprises a straight tube and an upper short tube extending upward, the left end of the straight tube is arranged as a straight slurry inlet, the right end of the straight tube is arranged as a straight slurry outlet, the top of the upper short tube is arranged as a one-way slurry outlet, the outer contour of the upper short tube is cylindrical, the inner wall shape of the upper short tube is an inverted cone with a width at the top and a narrowness at the bottom, the interior of the upper short tube forms an inverted cone cavity with a width at the top and a narrowness at the bottom, an inverted cone slider corresponding to the inverted cone cavity is arranged in the upper short tube, the top of the inverted cone slider is connected to the bottom end of the compression spring, the top of the compression spring is arranged at the upper end of the upper short tube, and the upper end of the upper short tube extends out of the three-way shell; The upper short tube of the three-way one-way valve of the first valved hole-sealing joint is connected to the grouting chamber, the upper short tube of the three-way one-way valve of the second valved hole-sealing joint is connected to the plugging chamber, the upper short tube of the three-way one-way valve of the third valved hole-sealing joint is connected to the interior of the first bag, and the upper short tube of the three-way one-way valve of the fourth valved hole-sealing joint is connected to the interior of the second bag.

5. The portable sealing device based on a three-way one-way valve for sealing, testing and plugging according to claim 4 is characterized in that: The first three-purpose pipe includes a first segmented pipe, a second segmented pipe, a third segmented pipe, a fourth segmented pipe, a fifth segmented pipe and a sixth segmented pipe. The left end of the first segmented pipe is connected to the three-purpose elbow, the right end of the first segmented pipe is connected to the straight slurry inlet of the three-way one-way valve on the third valved sealing hole joint, the left end of the second segmented pipe is connected to the straight slurry outlet of the three-way one-way valve on the third valved sealing hole joint, the right end of the second segmented pipe is connected to the straight slurry inlet of the three-way one-way valve on the fourth valved sealing hole joint of the second sealing hole unit, the left end of the third segmented pipe is connected to the straight slurry outlet of the three-way one-way valve on the fourth valved sealing hole joint of the second sealing hole unit, and the right end of the third segmented pipe is connected to the three-way valve on the first valved sealing hole joint. The left end of the fourth segmented pipe is connected to the straight slurry outlet of the three-way one-way valve on the first valved sealing joint, the right end of the fourth segmented pipe is connected to the straight slurry inlet of the three-way one-way valve on the fourth valved sealing joint of the third sealing unit, the left end of the fifth segmented pipe is connected to the straight slurry outlet of the three-way one-way valve on the fourth valved sealing joint of the third sealing unit, the right end of the fifth segmented pipe is connected to the straight slurry inlet of the three-way one-way valve on the second valved sealing joint, the left end of the sixth segmented pipe is connected to the straight slurry outlet of the three-way one-way valve on the second valved sealing joint, and the right end of the sixth segmented pipe is connected to the straight slurry inlet of the three-way one-way valve on the fourth valved sealing joint of the fourth sealing unit.

6. The portable sealing device based on a three-way one-way valve for sealing, testing and plugging according to claim 5 is characterized in that: The deformation capacity of the compression springs on the three-way one-way valve in the third valved sealing joint, the three-way one-way valve in the fourth valved sealing joint of the second sealing unit, the three-way one-way valve in the fourth valved sealing joint of the third sealing unit and the three-way one-way valve in the fourth valved sealing joint of the fourth sealing unit is weakened successively, and elastic bursting discs are arranged on the outer surfaces of the first valved sealing joint and the second valved sealing joint, and the bursting pressure of the elastic bursting disc on the first valved sealing joint is lower than the bursting pressure of the elastic bursting disc on the second valved sealing joint.

7. A portable hole sealing method based on a three-way one-way valve, which is implemented based on a portable hole sealing device based on a three-way one-way valve as claimed in any one of claims 1 to 6, characterized in that: The steps include: (1) The first sealing unit, the second sealing unit, the third sealing unit and the fourth sealing unit, as well as the corresponding joints and the first three-way pipe, the second three-way pipe and the gas measuring pipe are transported to the underground operation site for assembly, ensuring that the three-way elbow and the first three-way pipe, the drainage elbow and the second three-way pipe, and the gas measuring elbow and the gas measuring pipe are tightly connected, and the ball valve on the drainage elbow is kept closed; (2) Insert the right end of the assembled sealing device into the borehole, then connect the external grouting pipe to the three-way elbow, connect the external water return pipe to the drainage elbow, connect the external gas measuring pipe to the gas measuring elbow, and then perform grouting through the external grouting pipe. During the grouting process, the first bag and the second bags of the second sealing unit, the third sealing unit, and the fourth sealing unit gradually expand. When the pressure reaches 0.5 MPa, the first sealing joint with valve explodes, and grouting begins in the grouting cavity until the pressure is maintained at 0.5 MPa. (3) Open the ball valve on the drainage elbow, inject low-pressure water into the first three-purpose pipe through the external grouting pipe for cleaning until clear water flows out of the drainage elbow, and then close the ball valve; (4) Inject mucus material into the plugging cavity through the first three-way pipe. When the pressure rises to above 0.75 MPa, the second valved sealing joint is opened, and the pressure drops rapidly. After the plugging cavity is filled, continue to inject mucus material. As the injection pressure of the mucus material continues to increase, stop grouting when the pressure reaches 2 MPa. Then open the ball valve on the drainage elbow again, and inject low-pressure water into the first three-way pipe through the external grouting pipe for cleaning until clear water flows out of the drainage elbow, and then close the ball valve. (5) During the extraction process, the borehole leakage condition is checked periodically through the gas measuring tube. Once the leakage volume is found to increase significantly, the ball valve is opened in time and step (4) is performed again.

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