CN102562133B - Device and method for sealing and drilling holes of gas drainage - Google Patents

Abstract

A gas drainage drilling and sealing device and method, the device includes a cylinder with a number of holes, a layer of inner film is attached to the inner wall of the cylinder, and the two sides of the cylinder are respectively provided with circular tubes fitted on the gas drainage pipe. The front cover of the cylinder and the rear cover of the cylinder. There is a ring plate inside the cylinder. There is a spring on one side of the ring plate, and a number of needles and drawstrings on the other side. There are polyurethane black materials set together in the cylinder. Pouches and polyurethane white pouches. When the device is sent to the required position in the borehole with the gas extraction pipe, pull the pull rope to make the short needle on the circular plate pierce the polyurethane black material bag and the polyurethane white material bag, so that the two kinds of slurry in the bag Flow out for mixing, repeatedly pull the ring plate for many times, so that the slurry in the polyurethane black material bag and the polyurethane white material bag is repeatedly stirred and fully mixed; the sealing material generated by the reaction of the mixed slurry continues to expand, bursts the inner membrane, and Extrusion from several holes on the wall of the cylinder is closely combined with the wall of the drilled hole to realize the sealing of the drilled hole.

Description

A device and method for gas drainage drilling and sealing

technical field

The invention relates to a method for drilling and sealing holes, which belongs to the field of gas control technology and equipment in the underground area of coal mines, and in particular relates to the technology of drilling and sealing underground coal mines. the

Background technique

Gas accidents are the main disasters in coal mines. The national coal mine gas control policy determines that high-gas mines must be pumped before mining, and gas drainage is a permanent measure. my country's coal mine gas extraction rate is generally low. In addition to the influence of geological conditions such as poor coal seam permeability, the main reason is that the quality of the hole sealing of the borehole is poor, and the cracks around the borehole cannot be effectively sealed. The gas concentration decays quickly and the gas flow rate is low. the

At present, organic resin materials or other polymer materials are commonly used in coal mines in my country, and these materials are generally produced by mixing and reacting two or more chemical slurries. The conventional method is to mix a variety of chemical slurries by manual stirring. After stirring, use cotton cloth to absorb and wrap it on the gas drainage pipeline, and insert it into the drainage hole together with the gas drainage pipeline. Since the chemical slurry is mixed from the beginning to the foaming The interval time is only tens of seconds (usually less than 30s), so the mixed slurry usually begins to foam and expand during the advancement of the gas drainage pipe in the drainage hole, preventing further advancement and failing to reach the set sealing position. If the sealing length is less than the design, the sealing length is generally 3~4m, and the sealing section is located at the position where the borehole cracks are developed, and an effective seal cannot be formed. In addition, this process requires a number of skilled workers and close cooperation, and the workers' skin is easily exposed to chemical slurry, which is harmful to the human body. the

Contents of the invention

Technical problem: The object of the present invention is to solve the problems existing in the prior art, and provide a gas drainage drilling hole sealing device and method with simple method, compact structure and good hole sealing effect. the

Technical solution: The gas drainage drilling and sealing device of the present invention includes a cylinder with several holes, a layer of inner film is attached to the inner wall of the cylinder, and the two sides of the cylinder are respectively equipped with gas drainage pipes. The front cover of the cylinder and the back cover of the cylinder, the cylinder is provided with a ring plate with a plurality of holes on the end surface, one side of the ring plate is symmetrically provided with springs connected with the front cover of the cylinder, and the other side of the ring plate is symmetrical. There are a number of needles on the side end surface, and two drawstrings protruding out of the cylinder are symmetrically arranged. Between the ring plate and the back cover of the cylinder, there is a polyurethane black bag and a suit fixed on the gas drainage pipe. Polyurethane white pouch on polyurethane black pouch. the

The cylinder has a length of 0.2-0.5m and a diameter of 100mm. the

Gas drainage drilling and sealing method of the present invention comprises the following steps:

a. After fixing the front cover of the cylinder connected with the ring plate spring and the end of the cylinder with a number of holes attached to a layer of inner film, set it on the gas drainage pipe, and then put the polyurethane black material bag stacked together Put the polyurethane white material bag on the gas drainage pipe, send it into the cylinder, and then install the cylinder back cover and fix it on the other end of the cylinder;

b. Insert the gas drainage pipe into the gas drainage borehole at a distance of 0.5 to 1 m from the orifice, pull the pull rope fixed on the circular plate outward, and the puncture needles on the circular plate pierce the polyurethane black bag and the polyurethane white The bladder bag is used to make the two kinds of slurry in the bag flow out for mixing. The mixed slurry flows to the direction of the front cover of the cylinder through the holes on the ring plate. The slurry in the bladder bag is stirred repeatedly and fully mixed;

c. The sealing material generated by the reaction of the mixed slurry continuously expands, bursts the inner membrane, and squeezes out from several holes on the wall of the cylinder to tightly combine with the hole wall of the drilled hole to realize the sealing of the drilled hole.

Beneficial effects: Due to the adoption of the above-mentioned technical scheme, the control of the sealing position can be realized by using the cylinder equipped with polyurethane black and white material bags, which can meet the requirements of the designed sealing length, and there is a stable reaction space. The black and white capsule bag makes the slurry in the black and white capsule bag mix and react to form a new sealing material. The sealing material expands continuously, bursts the inner membrane and squeezes out from several holes on the wall of the cylinder to be tight with the wall of the drilled hole. Combined to achieve the sealing of the drilled hole. It has the characteristics of simple structure, convenient operation, strong controllability and harmless to human body. the

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

Fig. 2 is a schematic cross-sectional view of C-C in Fig. 1 . the

Fig. 3 is a cylinder structural representation of the present invention. the

Fig. 4 is a schematic diagram of the structure of the ring plate. the

In the figure: 1. Gas drainage pipe, 2. Polyurethane black material bag, 3. Polyurethane white material bag, 4. Inner membrane, 5. Cylinder, 6. Ring plate, 7. Spring, 8. Short needle , 9. Drawstring, 10. Drilling, 11. Small hole, 12. Cylinder back cover, 13. Cylinder front cover, 14-1. Front cover round hole, 14-2 Back cover round hole, 14-3 . Round hole of ring plate. the

Detailed ways

The specific embodiment of the present invention will be further described below in conjunction with accompanying drawing:

As shown in Figure 1, the gas drainage drilling and sealing device is mainly composed of cylinder 5, polyurethane black material bag 2, polyurethane white material bag 3, ring plate 6, cylinder rear cover 12, and cylinder front cover 13 , the cylinder front cover 13, the cylinder back cover 12 and the ring plate 6 are drilled with the front cover hole 14-1, the back cover hole 14-2 and the ring plate hole of the gas drainage pipe 1 respectively. 14-3. Have some holes on the wall of the cylinder 5, the length of the cylinder 5 is 0.2 ~ 0.5m, and the diameter is 100mm, as shown in Figure 3; The two sides are respectively equipped with a cylinder front cover 13 and a cylinder rear cover 12 which are set on the gas extraction pipe 1, and a circular plate 6 is provided inside the cylinder 5, and a plurality of holes are evenly distributed on the circular plate 6. One side of the ring plate 6 is symmetrically provided with a spring 7 connected to the front cover 13 of the cylinder; Between the rope 9, the ring plate 6 and the cylinder back cover 12, there are polyurethane black material bag 2 fixed on the gas extraction pipe 1 and a polyurethane white material bag 3 sleeved on the polyurethane black material bag 2.

The gas drainage drilling and sealing method of the present invention: first, the inner membrane 4 is set in the cylinder 5 with several holes drilled in the cylinder wall. The length of the cylinder 5 is 0.2~0.5m, and the diameter is 100mm. The cover 13 is fixed on the cylinder 5 with screws, and the cylinder front cover 13 is drilled with a front cover hole 14-1 through the gas extraction pipe 1, and two springs 7 and 7 are symmetrically fixed on the cylinder front cover 13. The other end is connected to the ring plate 6, and a pointed short needle 8 is welded on one side of the ring plate 6, and two stay ropes 9 are symmetrically fixed on the ring plate 6; the side of the welded short needle 8 faces away from the cylinder front cover 13 A plurality of through-holes 11 are evenly arranged on the circular ring plate 6, and the circular ring plate circular hole 14-3 is drilled in the center of the circular ring plate 6. Fix the cylinder front cover 13 connected to the ring plate 6 spring and the cylinder 5 with a number of holes attached to the inner membrane 4, the inner membrane 4 outside the polyurethane white bag 3, and the two ends of the inner membrane 4 The opening is equal to the length of the cylinder 5, and the diameter of the inner membrane is 95mm. Pass the gas extraction pipe 1 through the round hole 14-1 of the front cover and the round hole 14-3 of the ring plate and tightly fix it with the front cover 13 of the cylinder. Then the polyurethane black material bag 2 and the polyurethane white material bag 3 nested together are set on the gas extraction pipe 1, and then the polyurethane white material bag 3 is set on the polyurethane black material bag 2, and the polyurethane black material The two ends of the capsule bag 2 and the polyurethane white material capsule bag 3 are bound on the gas extraction pipe 1 and sent into the cylinder 5, and the cylinder back cover 12 is passed through the gas extraction pipe 1 and fixed to the other end of the cylinder 5. Insert the gas extraction pipe 1 into the gas extraction borehole, at a distance of 0.5-1 m from the orifice, pull the pull rope 9 fixed on the ring plate 6 outward, and the needles 8 on the ring plate 6 pierce the polyurethane black material The pouch 2 and the polyurethane white pouch 3 make the two kinds of slurry in the bag flow out for mixing, and the polyurethane black pouch 2 and the polyurethane white pouch 3 are compressed along with the continuous movement of the ring plate 6, and the mixed slurry passes through the ring A plurality of holes on the plate 6 flow toward the direction of the cylinder front cover 13. When the spring 7 is pulled to the end point of the cylinder rear cover 12, the pull rope 9 is released, and the ring plate 6 moves toward the direction of the cylinder front cover 13, and the ring is repeatedly pulled plate 6 multiple times, so that the slurry in the polyurethane black material bag 2 and the polyurethane white material bag 3 is repeatedly stirred and fully mixed; the mixed slurry reacts to form a new sealing material, and the sealing material continues to expand, bursting the inner membrane 4, and Extrude from several holes on the cylinder wall of the cylinder 5 and tightly combine with the hole wall of the borehole 10 to realize the sealing of the borehole 10 . the

Claims (1)

1. A gas drainage drilling and sealing device, characterized in that: it comprises a cylinder (5) with several holes, a layer of inner membrane (4) is attached to the inner wall of the cylinder (5), and the cylinder (5) ) are respectively provided with a cylinder front cover (13) and a cylinder rear cover (12) which are set on the gas drainage pipe (1), and the cylinder (5) is provided with a cylinder with a plurality of holes on the end surface. The ring plate (6), one side of the ring plate (6) is symmetrically provided with a spring (7) connected to the front cover (13) of the cylinder, and a number of needles ( 8), the other end surface of the ring plate (6) is symmetrically provided with two pull cords (9) protruding from the outside of the cylinder (5), and the connection between the ring plate (6) and the cylinder back cover (12) There is a polyurethane black bag (2) fixed on the gas extraction pipe (1) and a polyurethane white bag (3) set on the polyurethane black bag (2). 2. The gas drainage drilling and sealing device according to claim 1, characterized in that: the cylinder (5) has a length of 0.2-0.5m and a diameter of 100mm. 3. A gas drainage drilling and sealing method according to claim 1, characterized in that it comprises the following steps: a. After fixing the cylinder front cover (13) connected to the spring of the ring plate (6) and the cylinder (5) with a layer of inner membrane (4) with several holes fixed, set it on the gas drainage pipe (1 ), and then put the stacked polyurethane black material bag (2) and polyurethane white material bag (3) on the gas drainage pipe (1), and send them into the cylinder (5), and then put the cylinder The cylinder rear cover (12) is installed and fixed on the other end of the cylinder (5); b. Insert the gas drainage pipe (1) into the gas drainage borehole at a distance of 0.5-1 m from the orifice, pull the pull rope (9) fixed on the ring plate (6) outward, The puncture needle (8) pierces the polyurethane black material bag (2) and the polyurethane white material bag (3), so that the two kinds of slurry in the bag flow out for mixing, and the mixed slurry passes through multiple holes on the ring plate (6) Flow to the direction of the front cover of the cylinder (13), repeatedly pull the ring plate (6) for many times, so that the slurry in the polyurethane black bag (2) and the polyurethane white bag (3) are repeatedly stirred and fully mixed; c. The sealing material generated by the reaction of the mixed slurry continuously expands, bursts the inner membrane (4), and squeezes out from several holes on the wall of the cylinder (5) to tightly combine with the hole wall of the drilled hole (10), realizing the sealing Sealing of borehole (10).

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