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Grouting bag type hole packer with multi-section seal

A technology of hole sealer and grouting bag, which is used in sealing/isolation, wellbore/well components, earth-moving drilling, etc., can solve the problems of affecting the sealing effect, poor adaptability, complicated operation, etc., and achieve the sealing effect. Good, strong applicability, simple operation effect

Inactive Publication Date: 2014-04-02
PINGDINGSHAN ANTAIHUA MINING SAFETY EQUIP MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1. Cement mortar plugging: Cement mortar plugging is applied in medium-hard and hard coal seams, the sealing speed is fast, the hole sealing is reliable, and the effect is very good, but the plugging effect on soft coal seams is poor
[0005] 2. The gas drainage occluder is used. The gas drainage occluder is expensive, the operation is complicated, and the sealing effect is unstable. Threat to coal mine safety production
[0006] 3. Using rigid polyurethane foam to seal the hole, the disadvantage is that the operation is complicated, and the polyurethane foam shrinks over time, which seriously affects the sealing effect
[0007] 4. The water (air) pressure type hole sealing device is used, and its disadvantage is that it is heavy and inconvenient to operate.
[0008] 5. Conical capsule type hole sealer, its disadvantage is that it has poor adaptability to the size of the hole diameter and the shape of the hole, and the quality of the hole sealing is not easy to guarantee

Method used

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  • Grouting bag type hole packer with multi-section seal
  • Grouting bag type hole packer with multi-section seal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A grouting bag type hole sealer with multi-stage sealing, including a grouting pipe 2, and two cloth bags 3, with a space between the two cloth bags 3, the grouting pipe 2 runs through Two cloth bags 3 ensure that the end of the grouting pipe 2 extends into the last cloth bag 3 and does not go out. A one-way check valve 4 is provided on the part of each section of the grouting pipe 2 that is located in the cloth bag 3 . The section of the grouting pipe 2 located between the two cloth bags 3 is provided with a burst valve 5 .

[0022] In the present invention, the cloth bag 3 is wound to form a sleeve hole 6 .

[0023] In the present invention, the end of the grouting pipe 2 is closed.

[0024] As shown in the figure, when the present invention is in use, the gas drainage pipe 1 provided with the gas collecting port 8 is inserted through the sleeve hole 6 into the drilled hole (gas drainage hole) 7 in the coal body 9, and passed through The grouting pipe 2 is grouted, ...

Embodiment 2

[0026] A grouting bag type hole sealer with multi-stage sealing, including a grouting pipe 2, and two cloth bags 3, with a space between the two cloth bags 3, the grouting pipe 2 runs through Two cloth bags 3 ensure that the end of the grouting pipe 2 extends into the last cloth bag 3 and does not go out. A one-way check valve 4 is provided on the part of each section of the grouting pipe 2 that is located in the cloth bag 3 . A burst valve 5 is arranged on the section of the grouting pipe 2 located between the two cloth bags 3 .

[0027] In the present invention, the cloth bag 3 is wound to form a sleeve hole 6 .

[0028] In the present invention, the end of the grouting pipe 2 is closed.

[0029] As shown in the figure, when the present invention is in use, the gas drainage pipe 1 is replaced by an anchor rod, which is inserted into the drill hole 7 in the coal body 9 through the sleeve hole 6, and grouted through the grouting pipe 2, and the anchor rod The support is fixe...

Embodiment 3

[0031] A grouting bag type hole sealer with multi-stage sealing, including a grouting pipe 2, and two cloth bags 3, with a space between the two cloth bags 3, the grouting pipe 2 runs through Two cloth bags 3 ensure that the end of the grouting pipe 2 extends into the last cloth bag 3 and does not go out. A one-way check valve 4 is provided on the part of each section of the grouting pipe 2 that is located in the cloth bag 3 . A burst valve 5 is arranged on the section of the grouting pipe 2 located between the two cloth bags 3 .

[0032] In the present invention, the cloth bag 3 is wound to form a sleeve hole 6 .

[0033] In the present invention, the end of the grouting pipe 2 is closed.

[0034] As shown in the figure, the present invention is directly placed in the borehole 7, and the casing hole 6 does not need to penetrate the rod body, and the hole can be well sealed by grouting through the grouting pipe 2.

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PUM

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Abstract

A grouting bag type hole packer with multi-section seal includes a grouting pipe and at least two cloth bags, wherein the grouting pipe sequentially penetrates through each cloth bag; a distance is reserved between every two cloth bags; the tail end of the grouting pipe is sealed; an unidirectional check valve is arranged at the part in each cloth bag at each section of the grouting pipe; and an explosion valve is arranged on the grouting pipe positioned between every two cloth bags. The grouting bag type hole packer has the advantages of simplicity in operation, excellent hole packing effect, safety, reliability, strong suitability and high efficiency.

Description

technical field [0001] The invention relates to a hole sealing device, in particular to a grouting bag type hole sealing device with multi-stage sealing. Background technique [0002] Coal and gas outburst is a natural disaster that threatens the safe production of coal mines. Especially in recent years, with the increase of mine mining depth, the gas pressure and gas content of coal seams have gradually increased. The new technology of drilling pre-extraction of gas has brought about the problem of plugging and sealing between the drainage hole and the drainage pipeline. [0003] Currently, there are several ways to solve this problem: [0004] 1. Cement mortar plugging: Cement mortar plugging is used in medium-hard and hard coal seams. The sealing speed is fast, the hole sealing is reliable, and the effect is good, but the plugging effect on soft coal seams is poor. [0005] 2. The gas drainage occluder is used. The gas drainage occluder is expensive, the operation is co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B33/122
Inventor 张福旺范付恒朱亚曲保伟岳永强郭春峰
Owner PINGDINGSHAN ANTAIHUA MINING SAFETY EQUIP MFG