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Frozen-type grouting hole-sealing device

A hole sealer and grouting technology, which is used in sealing/sealing, gas discharge, safety devices, etc., can solve the problems of low and serious compressive strength of polyurethane sealing, poor sealing performance of mechanical elastic sealing to drilling holes, etc.

Inactive Publication Date: 2018-09-04
王景硕
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem mainly solved by the present invention is that polyurethane sealing has low compressive strength, mechanical elastic sealing has poor sealing performance on boreholes, and air leakage is very serious, so it cannot be used for long-term drainage of coal seam. Problem, the present invention provides a frozen type grouting hole sealer

Method used

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  • Frozen-type grouting hole-sealing device

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Embodiment Construction

[0015] A frozen type grouting hole sealing device, comprising a bladder grouting pipeline 1, a gas extraction pipe 4 and a water inlet pipeline 8, and the bladder grouting pipeline 1 is sequentially provided with first blasting valves from left to right 2. The pressure relief valve 5 and the second blasting valve 6. The right side of the second blasting valve 6 is a plug 7. The gas extraction pipe 4 is connected to the bladder grouting pipeline 1 through a large pipe collar 9 and a small pipe collar 11. connection, a first pouch 3 is provided at the joint of the large pipe collar 9, a second pouch 10 is provided at the joint of the small pipe collar 11, the rightmost end of the gas drainage pipe 4 is a sealing flower pipe 12, and the water inlet pipe 8 It is fixed below the gas extraction pipe 4 through a large pipe collar 9 . An application method of a frozen grouting hole sealing device is: placing the grouting hole sealing device in the coal seam hole, pumping liquid carbon...

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Abstract

The invention relates to a frozen-type grouting hole-sealing device and belongs to the technical field of coal mine equipment. The frozen-type grouting hole-sealing device comprises a bag grouting pipeline, a gas extraction pipe and a water inlet pipeline. The bag grouting pipeline is sequentially provided with a first explosion valve, a pressure-relieving valve and a second explosion valve from left to right. The gas extraction pipe is connected with the bag grouting pipeline through a large pipe hoop and a small pipe hoop, and the water inlet pipeline is fixed to the lower portion of the gasextraction pipe through a large pipe hoop. In the frozen-type grouting hole-sealing device, sealing is conducted in the modes that water is grouted into coal seam gaps and frozen into ice, after thewater is frozen into the ice, the size can be increased, the coal seam gaps can be effectively filled, hole-sealing operation is effectively conducted on coal seam holes, the sealed holes are stable and not prone to generating gaps, and the frozen-type grouting hole-sealing device can be used for hole-sealing operation of the drill holes for coal seam long-acting extraction.

Description

technical field [0001] The invention relates to a frozen type grouting hole sealing device, which belongs to the technical field of coal mine equipment. Background technique [0002] Gas drainage is an important means of gas control, and hole sealing is an important part of gas drainage. Theoretically, under the condition that the hole is sealed without air leakage, the volume fraction of the extracted gas should be 100%. The actual situation shows that about 65% of the coal mining face in my country has a pre-drainage gas volume fraction of less than 30%, and gas leakage is common in gas drainage. In the process of gas drainage, the sealing process and sealing quality play a decisive role in the gas leakage of the drainage borehole. [0003] At present, the commonly used sealing methods at home and abroad include cement slurry sealing, polyurethane sealing, hole sealing, bag sealing and so on. Cement slurry sealing can withstand high pressure, but the cement will shrink ...

Claims

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Application Information

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IPC IPC(8): E21B33/12E21F7/00
CPCE21B33/12E21F7/00
Inventor 王景硕赵兴华李静
Owner 王景硕
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