CN202611748U

CN202611748U - Hole sealing structure

Info

Publication number: CN202611748U
Application number: CN 201220185875
Authority: CN
Inventors: 杨胜强; 黄长庚; 秦毅; 杨相玉; 牛杰; 杜振宇
Original assignee: XUZHOU ZHONGKUANG ANDA MINE TECHNOLOGY CO LTD
Current assignee: XUZHOU ZHONGKUANG ANDA MINE TECHNOLOGY CO LTD
Priority date: 2012-04-27
Filing date: 2012-04-27
Publication date: 2012-12-19
Anticipated expiration: 2022-04-27

Abstract

The utility model discloses a hole sealing structure which comprises a gas collecting pipe and a grouting pipe, wherein the gas collecting pipe and the grouting pipe are arranged inside a drill hole, a front clogging head and a rear clogging head are respectively arranged on the periphery faces of two end portions of the gas collecting pipe and comprise soft fabrics and expanding cement, wherein the soft fabrics are arranged on the periphery faces of the two end portions of the gas collecting pipe in a twining mode, the expanding cement is coated on the soft fabrics when the expanding cement is wet and scattered, and the expanding cement is matched with the outer wall of the gas collecting pipe and the inner wall of the drill hole in a sealed mode after the expanding cement expands and is solidified. The grouting pipe is arranged on the front clogging head in a penetrating mode, and an outlet of the grouting pipe is located between the front clogging head and the rear clogging head. The front clogging head and the rear clogging head are formed after the expanding cement coated on the two ends of the gas collecting pipe expands, quite expanding seal is achieved mutually among the expanding cement and the hole wall of the drill hole and the gas collecting pipe after the expanding cement expands, grouting towards the drill hole from the grouting pipe is carried out, crevices on the periphery of the drill hole can be preferably sealed, maintenance of pressure-bearing condition inside the seal hole cavity is achieved, setting time of the expanding cement is fast, and cost of sealing the hole is low, and high-voltage equipment is not need purchasing separately.

Description

A kind of sealing of hole structure

Technical field

The utility model relates to a kind of sealing of hole structure of coal mine gas boring.

Background technology

Some hole need be with its sealing back carrying out next step operation, such as the gas extraction technique behind brill in the prior art; The effect quality of gas pumping is mainly relevant with the sealing of hole effect of boring, and dynamically hole sealing technology is exactly to guarantee all the time that in the gas pumping process sealing of hole of boring is respond well; Hole sealing device such as Chinese patent notification number at present commonly used are CN201206471Y, and the day for announcing is on March 11st, 2009, and name is called in ' extraction borehole hole sealing device ' manual and discloses a kind of extraction borehole hole sealing device; Comprise sealing of hole sleeve pipe, gas collection tube and Grouting Pipe, the outer peripheral face of sealing of hole sleeve pipe and boring are consolidated with envelope section before the polyurethane, high-pressure slip-casting cement mortar envelope section behind the section of envelope and the polyurethane admittedly between the inwall vertically respectively, and described gas collection tube and Grouting Pipe one end are positioned at the hell outside; The other end runs through envelope section before the polyurethane and is plugged in cement mortar admittedly on the position of the section of envelope, this hole sealing device, and the sealing of hole cost is low; Not high to sealing of hole section boring requirement, but need three injections, and injection forms the forward and backward envelope section of polyurethane respectively earlier; Form the high-pressure slip-casting cement mortar section of envelope admittedly in injection; Operation sequence is complicated, needs setting time longer, and this structure adopts polyurethane foam-pressure mucus method of pore sealing; Its sealing of hole effect is better; But be to use the method need purchase pressure mucus hole packer and gases at high pressure, workman's operating technology is required height, cause the sealing of hole cost higher.

The utility model content

The purpose of the utility model is to provide a kind of sealing of hole structure, is guaranteeing sealing quality, and on the tight gastight basis, aperture, it is complicated to solve sealing of hole process of the prior art, and setting time is long, the problem that cost is high.

For realizing above-mentioned purpose; The utility model adopts following technical scheme: a kind of sealing of hole structure; Comprise the gas collection tube and the Grouting Pipe that are arranged in the boring; Be respectively arranged with forward and backward plug on the outer peripheral face at the both ends of gas collection tube; Described forward and backward plug is coated on the flexible fabric behind the expansion curing expansive cement that cooperates with the inner wall sealing of the outer wall of gas collection tube and boring when comprising the flexible fabric that twines the outer peripheral face that is located at gas collection tube both ends and wet loosing, described Grouting Pipe is located on the preceding plug, and the outlet of Grouting Pipe is between forward and backward plug.

Between forward and backward plug, be provided with the fiber mucus section of envelope admittedly.

A kind of sealing of hole structure of the utility model, by the expansive cement that spreads upon gas pumping pipe two ends expand the back forms before and after plug, after expansive cement expands can and borehole wall and gas collection tube between good Expansion sealing; Through Grouting Pipe slip casting in boring; Can be good at sealing the borehole circumference crack, keep being in artesian condition in the sealing of hole chamber, the expansive cement setting time is very fast; And the sealing of hole cost is low; Need not purchase high-tension apparatus separately, the utility model can be good at satisfying the sealing of hole requirement, for gas extracts effect guarantee is provided.

Description of drawings

Fig. 1 is the structural representation of the embodiment of the utility model.

The specific embodiment

A kind of embodiment of sealing of hole structure; As shown in Figure 1; Comprise the gas collection tube 3 and the Grouting Pipe 7 that are arranged in the boring 1; Plug 5, back plug 4 before being respectively arranged with on the outer peripheral face at the both ends of gas collection tube, forward and backward plug comprise and are coated on the flexible fabric behind the expansion curing expansive cement that cooperates with the inner wall sealing of the outer wall of gas collection tube and boring when twining the flexible fabric that is located at gas collection tube 3 two ends outer peripheral faces and wet loosing respectively, between forward and backward plug, are provided with the fiber mucus section of envelope 8 admittedly; The collection import of gas collection tube is positioned at gas pumping chamber 2; On the plug 5, the outlet of Grouting Pipe was between forward and backward plug before Grouting Pipe 7 was located in, and the plug outer setting has control valve 6 before being positioned on the Grouting Pipe.

The foregoing description in use, described flexible fabric can adopt cotton yarn or canvas.

Claims

1. sealing of hole structure; Comprise the gas collection tube and the Grouting Pipe that are arranged in the boring; Be respectively arranged with forward and backward plug on the outer peripheral face at the both ends of gas collection tube; It is characterized in that; Described forward and backward plug is coated on the flexible fabric behind the expansion curing expansive cement that cooperates with the inner wall sealing of the outer wall of gas collection tube and boring when comprising the flexible fabric that twines the outer peripheral face that is located at gas collection tube both ends and wet loosing, described Grouting Pipe is located on the preceding plug, and the outlet of Grouting Pipe is between forward and backward plug.

2. sealing of hole structure according to claim 1 is characterized in that, between forward and backward plug, is provided with the fiber mucus section of envelope admittedly.