Mobile type goaf gas quick blocking and extraction device and technology

A goaf, mobile technology, applied in mining devices, gas discharge, safety devices, etc., can solve the problems of increased manpower, hidden safety hazards, and temporary solutions to the enclosed wall, so as to reduce the difficulty of ventilation, realize coal mine safety, Avoid the effect of excessive deformation

Inactive Publication Date: 2015-03-11
HENAN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are defects such as slow construction of closed walls and excessive consumption of closed walls, which increase the consumption of manpower and material resources; in addition, closed walls only block gas, which is a temporary solution rather than a permanent cure, and there are potential safety hazards

Method used

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  • Mobile type goaf gas quick blocking and extraction device and technology
  • Mobile type goaf gas quick blocking and extraction device and technology
  • Mobile type goaf gas quick blocking and extraction device and technology

Examples

Experimental program
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Embodiment Construction

[0025] Such as Figure 1-Figure 6 The mobile goaf gas rapid plugging and drainage device shown includes a temporary sealing wall 7 located on the right side of the mining face 1 in the goaf 8, and the temporary sealing wall 7 includes a multi-level fixing device 16 and the flexible air bag 15 on the multi-level fixing device 16, the multi-level fixing device 16 facilitates the molding of the flexible air bag 15, and can avoid the excessive deformation of the flexible air bag 15 in a local area.

[0026] The multi-stage fixing device 16 includes two horizontal multi-stage telescopic mechanisms arranged in parallel and a vertical multi-stage telescopic mechanism fixed on the horizontal multi-stage telescopic mechanism, wherein the horizontal multi-stage telescopic Sliding sleeve 20, horizontal second-level sliding sleeve 21, horizontal third-level sliding sleeve 22, horizontal fourth-level sliding sleeve 23 and horizontal fifth-level sliding sleeve 24, horizontal first-level sli...

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Abstract

The invention discloses a mobile type goaf gas quick blocking and extraction device and a mobile type goaf gas quick blocking and extraction technology. The device and the technology are easy and convenient to operate; furthermore, gas in a goaf can be quickly blocked, and the blocked gas can be quickly extracted, so that the difficulty in treating the gas in the goaf can be effectively solved, the gas content of the goaf is fundamentally reduced, the goaf gas gathering amount and the gas gush amount to a stopping working surface are reduced, the influence of the gas in the goaf on the concentration of the gas on the stopping working surface is reduced to the maximum extent, and great significance in reducing the mine ventilating difficulty and realizing safe and high-efficiency production of a coal mine is realized. Multiple stages of fixing devices are convenient for flexible gas pocket forming, and overlarge deformation of a local area of a flexible gas pocket can be avoided; the operation and the use are convenient and quick; the requirement on an underground narrow space can be met, and quick moving is facilitated; meanwhile, the device can be recycled, multi-frequency utilization is realized, and the treatment cost is lowered.

Description

technical field [0001] The invention belongs to the technical field of gas control in goafs of coal mines, and in particular relates to a mobile goaf gas rapid plugging and extraction device and process. Background technique [0002] At present, my country's coal production is developing towards high efficiency, mechanization and intensification; however, coal and gas outburst and other gas disasters have become an important factor restricting its rapid development. At the same time, the poor natural conditions of coal mines and the increase of disaster sources have also gradually deteriorated the conditions for safe production of coal. According to statistics, in 2010, there were 1,403 coal mine accidents and 2,433 deaths nationwide, of which gas accidents accounted for 10.3% and the death toll accounted for 25.7%; in 2011, there were 1,201 coal mine accidents and 1,973 deaths nationwide, of which gas accidents accounted for 9.9% , the death toll accounted for 27%; in 2012...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F1/14E21B33/03E21B47/00
CPCE21F7/00E21F17/107
Inventor 倪小明贾炳孙小婷曹运兴张小东
Owner HENAN POLYTECHNIC UNIV
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