CN210422555U - Coal mine gas extraction drilling hole sealing structure - Google Patents

Abstract

The utility model relates to a colliery gas drainage drilling hole sealing structure, it is including the drainage pipe that is located the drilling, be located two bags on the drainage pipe, the slip casting pipe of being connected with the bag, drainage outside of tubes cover is equipped with two sliding sleeve, sliding sleeve and drainage pipe sliding seal are connected, sliding sleeve is close to outside fixed bag, slip casting pipe is worn to be equipped with inside two bags, wherein be equipped with the water injection pipe near the bag department of drilling opening part, sliding sleeve surface sets up fixed screw hole, lead screw through the looks adaptation, can be fixed sliding sleeve and drainage pipe mutually, be equipped with between two sliding sleeve and network, network connection is the cylinder structure and has certain elasticity, network connection both ends respectively with corresponding sliding sleeve connection, fill water-absorbing expansion material between networking and the drainage pipe; the utility model discloses convenient operation can make the fine rock stratum crack of deepening of hole sealing material in, the hole sealing is effectual.

Description

Coal mine gas extraction drilling hole sealing structure

Technical Field

The utility model relates to a colliery gas takes out and adopts technical field, especially relates to a colliery gas takes out and adopts drilling hole sealing structure.

Background

The hole sealing is an important technology in a coal mine gas drainage drill hole, the sealing performance of the drill hole directly influences the extraction effect, the hole sealing process comprises a cement mortar hole sealing method, a wood wedge yellow mud hole sealing method, a polyurethane foam hole sealing method and a two-plug one-injection method, wherein the cement mortar hole sealing method and the wood wedge yellow mud hole sealing method are low in cost but poor in hole sealing effect, the extraction pipe and a hole sealing device need to be taken out respectively according to needs when the polyurethane foam hole sealing method and the two-plug one-injection method are operated, the hole sealing device is fixed by an adhesive tape and a binding rope at the corresponding position of the extraction pipe, such as a cotton cloth or a bag, the operation is inconvenient, the hole sealing pressure is insufficient, and the hole sealing device cannot well penetrate into a rock stratum crack.

Disclosure of Invention

The utility model provides a colliery gas is taken out and is adopted drilling hole sealing structure, the technical problem that solve for providing a convenient operation, can make the fine rock stratum crack of deepening of hole sealing material, the effectual colliery gas of hole sealing is taken out and is adopted drilling hole sealing structure.

In order to solve the technical problem, the utility model discloses a following technical scheme: the utility model provides a colliery gas drainage drilling hole sealing structure, including the drainage pipe that is located the drilling, be located two bags on the drainage pipe, the slip casting pipe that is connected with the bag, drainage outside of tubes cover is equipped with two sliding sleeve, sliding sleeve and drainage pipe sliding seal connect, sliding sleeve is close to outside fixed bag, slip casting pipe is worn to be equipped with in two bags inside, wherein be equipped with the water injection pipe near the bag department of drilling opening part, sliding sleeve surface sets up fixed screw hole, through the lead screw of looks adaptation, can be fixed sliding sleeve and drainage pipe mutually, be equipped with between two sliding sleeve and net, be networking structure and have certain elasticity, net both ends and be connected with corresponding sliding sleeve respectively, it fills water-absorbing expansion material to net between the drainage pipe.

Preferably, a groove is formed at the joint of the sliding sleeve and the bag along the circumferential direction of the sliding sleeve, and one end of the bag is tied in the groove of the sliding sleeve in advance through a rope.

Preferably, a protrusion extends outwards from the fixing threaded hole on the surface of the sliding sleeve, and a threaded hole matched with the fixing threaded hole on the surface of the sliding sleeve is formed in the protrusion.

Preferably, the connecting net is a fiber net, and metal rings are arranged at two ends of the connecting net and are integrally formed with the sliding sleeve.

Preferably, the networking is provided with openings.

Preferably, the networking surface is provided with meshes, and the diameter of each mesh is 1-5 mm.

Preferably, the water outlet of the water injection pipe is positioned in the connecting net.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses well bag and sliding sleeve are fixed in advance, sliding sleeve and the sealed sliding connection of taking out the pipe of taking out, and then bag and taking out the pipe of taking out are as an organic whole, need not take out respectively when using and take out pipe and hole sealing device and carry out the sticky tape and the fixed of tying up of rope repetition again, just can control hole sealing length through sliding sleeve, through penetrating corresponding lead screw in sliding sleeve's fixed threaded hole, the lead screw presss from both sides tight pipe of taking out, can play fixed effect and waterproof, better than sticky tape and tying up the rope, when the hole sealing, be located the water-absorbing expansion material in the net, after water injection pipe water absorption expansion, can be out of shape through the net, and then can be better enter into the rock stratum gap, do benefit to the water-absorbing expansion material and enter into the rock stratum gap and; in the utility model, the connection part of the sliding sleeve and the bag is provided with a groove along the circumferential direction of the sliding sleeve, one end of the bag is pre-tied at the groove of the sliding sleeve through a rope, and the rope is positioned in the groove to avoid damage during stacking and transportation at ordinary times; in the utility model, the fixed thread hole on the surface of the sliding sleeve extends outwards to form a bulge, and a thread hole matched with the fixed thread hole on the surface of the sliding sleeve is arranged in the bulge, so that the thread length is increased, and the fixing strength is enhanced; the utility model is characterized in that the middle connecting net is a fiber net, the two ends of the connecting net are provided with metal rings, the metal rings and the sliding sleeve are integrally formed, and the connecting net is provided with openings, so that water-absorbing expansion materials with different sizes can be placed according to the requirement; the mesh is arranged on the surface of the middle connecting net, the diameter of the mesh is 1-5 mm, and the mesh is easy to enter gaps through the expanded material after water absorption; the utility model discloses the delivery port of notes water pipe is located the net in, is favorable to the swelling material that absorbs water to absorb water.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a side view of the sliding sleeve according to the present invention.

In the figure: 1. the device comprises a drill hole 2, an extraction pipe 3, a bag 4, a grouting pipe 5, a sliding sleeve 6, a water injection pipe 7, a networking pipe 8 and a protrusion.

Detailed Description

Example (b): as shown in fig. 1 and 2, the coal mine gas extraction drilling hole sealing structure comprises an extraction pipe 2 positioned in a drill hole 1, two bag 3 positioned on the extraction pipe 2, and a grouting pipe 4 connected with the bag 3, wherein two sliding sleeves 5 are sleeved outside the extraction pipe 2, the sliding sleeves 5 are connected with the extraction pipe 2 in a sliding and sealing manner, the sliding sleeves 5 are close to the fixed bag 3 on the outer side, the grouting pipes 4 are arranged inside the two bag 3 in a penetrating manner, the grouting pipes 4 are respectively communicated with the two bag 3, a water injection pipe 6 is arranged at the bag 3 close to the opening of the drill hole 1, the water injection pipe 6 penetrates through the bag 3 close to the drill hole 1, a water outlet is positioned in a space between the two bag 3, a fixed threaded hole is arranged on the surface of the sliding sleeve 5, the sliding sleeve 5 and the extraction pipe 2 can be fixed through a matched screw rod, a networking 7 is arranged between the two sliding sleeves 5, the networking 7 is in a cylindrical structure and has certain elasticity, two ends of the connecting net 7 are respectively connected with the corresponding sliding sleeves 5, and water-absorbing expansion materials are filled between the connecting net 7 and the extraction pipe 2; preferably, the connection part of the sliding sleeve 5 and the bag 3 is provided with a networking 7 in a cylinder shape along the circumference of the sliding sleeve 5, and a groove is formed in the connection part of the sliding sleeve 5 and the bag 3, and one end of the bag 3 is tied in the groove of the sliding sleeve 5 in advance through a rope; preferably, a bulge 8 extends outwards from the fixed threaded hole on the surface of the sliding sleeve 5, and a threaded hole matched with the fixed threaded hole on the surface of the sliding sleeve 5 is formed in the bulge 8; preferably, the connecting net 7 is a fiber net, metal rings are arranged at two ends of the connecting net 7, the metal rings and the sliding sleeve 5 are integrally formed, and the two metal rings are fixed by other fixing methods such as welding; preferably, the network 7 is provided with an opening; preferably, the surface of the networking 7 is provided with meshes, and the diameter of each mesh is 1-5 mm; preferably, the water outlet of the water injection pipe 6 is located within the network 7.

In the implementation of the embodiment: firstly, taking out the extraction pipe 2 and the bag 3 together, sliding the two bags 3 to corresponding positions according to the hole sealing length, penetrating the fixing threaded holes by using corresponding fixing screw rods until the extraction pipe is clamped, wherein a plurality of fixing threaded holes can be arranged, corresponding threaded grooves can be formed in the surface of the extraction pipe, the extraction pipe is fixed by a screw rod, and after the fixation is finished, opening the networking 7 according to the requirement, placing a water-swellable material, such as a water-swellable bag, in the netting 7, closing the opening of the netting 7, placing the device in the borehole 1, opening the grouting pipe 4, the bag 3 is grouted until the bag 3 fills the drill hole 1, then the water injection pipe 4 is opened to inject water into the water-absorbing expansion material in the networking 7, after the water-absorbing expansion material absorbs water, the expansion material expands and deforms under the networking effect and drives the networking support, the space between the two bags 3 is filled to make the water-absorbing collision material closer to the inner wall of the rock stratum.

In the technical scheme: in the utility model, the middle bag 3 and the sliding sleeve 5 are fixed in advance, the sliding sleeve 5 is connected with the pumping pipe 2 in a sealing and sliding way, and then the bag 3 and the pumping pipe 2 are integrated, when in use, the extraction pipe 2 and the hole sealing device do not need to be taken out respectively and then the adhesive tape and the rope are repeatedly bundled and fixed, the hole sealing length can be controlled by sliding the sliding sleeve 5, the extraction pipe 2 can be tightly clamped by the lead screw through penetrating the corresponding lead screw into the fixed threaded hole of the sliding sleeve 5, the effect of fixation and water resistance can be achieved, the sealing device is better than an adhesive tape and a binding rope, when sealing holes, the water-absorbing expansion material in the networking 7 can be extruded and deformed through the networking 7 after absorbing water and expanding through the water injection pipe 6, the water-absorbing expansion material can better enter a rock stratum gap, the water-absorbing expansion material can enter the rock stratum gap to be sealed, and the distance between the two bags 3 in the device is regulated within a certain range; in the utility model, a groove is arranged at the joint of the sliding sleeve 5 and the bag 3 along the circumferential direction of the sliding sleeve 5, one end of the bag 3 is bound at the groove of the sliding sleeve 5 in advance through a rope, and the rope is positioned in the groove, thereby avoiding damage during stacking and transportation at ordinary times; in the utility model, the fixed thread hole on the surface of the sliding sleeve 5 is extended outwards to form a bulge 8, and the bulge 8 is internally provided with a thread hole matched with the fixed thread hole on the surface of the sliding sleeve 5, so that the thread length is increased, and the fixing strength is enhanced; the utility model is characterized in that the connecting net 7 is a fiber net, the two ends of the connecting net 7 are provided with metal rings which are integrated with the sliding sleeve 5, and the connecting net 7 is provided with openings for placing water-absorbing expansion materials with different sizes according to the requirement; the mesh is arranged on the surface of the networking 7 of the utility model, the diameter of the mesh is 1-5 mm, and the mesh is easy to enter gaps through the expansion material of the mesh after absorbing water; the utility model discloses the delivery port of notes water pipe 6 is located networking 7, is favorable to the water swelling material to absorb water.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (7)

1. The utility model provides a colliery gas drainage drilling hole sealing structure, is including the drainage pipe (2) that are located drilling (1), two bag (3) that are located drainage pipe (2), slip casting pipe (4) of being connected with bag (3), its characterized in that: extract and take out pipe (2) outside cover and be equipped with two sliding sleeve (5), sliding sleeve (5) and extract pipe (2) sliding seal connection, sliding sleeve (5) are close to outside fixed bag (3), slip casting pipe (4) are worn to be equipped with inside two bags (3), wherein bag (3) department of being close to drilling (1) opening part is equipped with water injection pipe (6), fixed screw hole has been seted up on sliding sleeve (5) surface, lead screw through the looks adaptation, can be fixed sliding sleeve (5) and extract pipe (2) mutually, be equipped with even net (7) between two sliding sleeve (5), it is the cylinder structure and has certain elasticity to net (7), it is connected with corresponding sliding sleeve (5) respectively to net (7) both ends, it absorbs water inflation material to fill between net (7) and extract and take out pipe (2).

2. The coal mine gas extraction drilling and sealing structure according to claim 1, characterized in that: a groove is formed in the connecting part of the sliding sleeve (5) and the bag (3) along the circumferential direction of the sliding sleeve (5), and one end of the bag (3) is tied in the groove of the sliding sleeve (5) in advance through a rope.

3. The coal mine gas extraction drilling and sealing structure according to claim 1, characterized in that: the fixed threaded hole on the surface of the sliding sleeve (5) is provided with a bulge (8) in an outward extending mode, and a threaded hole matched with the fixed threaded hole on the surface of the sliding sleeve (5) is formed in the bulge (8).

4. The coal mine gas extraction drilling and sealing structure according to claim 1, characterized in that: the connecting net (7) is a fiber net, metal rings are arranged at two ends of the connecting net (7), and the metal rings and the sliding sleeve (5) are integrally formed.

5. The coal mine gas extraction drilling and sealing structure according to claim 1, characterized in that: the connecting net (7) is provided with an opening.

6. The coal mine gas extraction drilling and sealing structure according to claim 1, characterized in that: the surface of the networking (7) is provided with meshes, and the diameter of each mesh is 1-5 mm.

7. The coal mine gas extraction drilling and sealing structure according to claim 1, characterized in that: the water outlet of the water injection pipe (6) is positioned in the connecting net (7).

Images