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A comprehensive control method for gas and coal spontaneous combustion in near-horizontal thick coal seam mining

A comprehensive management and thick coal seam technology, applied in gas discharge, mining equipment, earthwork drilling and mining, etc., can solve problems such as single disasters, achieve the effects of avoiding gas exceeding the limit, reducing project costs, and inhibiting spontaneous combustion of residual coal

Active Publication Date: 2022-02-18
ANHUI UNIV OF SCI & TECH
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Problems solved by technology

These methods have played an important role in ensuring the safe production of mines, but most of the existing prevention and control methods are used for single disasters, and few involve the prevention and control of coupling disasters of gas and coal spontaneous combustion, especially the coupling disasters of gas and coal spontaneous combustion in near-horizontal thick coal seam mining

Method used

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  • A comprehensive control method for gas and coal spontaneous combustion in near-horizontal thick coal seam mining
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  • A comprehensive control method for gas and coal spontaneous combustion in near-horizontal thick coal seam mining

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Embodiment 1

[0046] like Figures 1 to 4 As shown, a kind of near horizontal thick coal seam mining gas and coal spontaneous combustion comprehensive treatment method provided by the present invention comprises the following steps:

[0047] (1) Use a two-inlet and one-return partial Y-shaped downward ventilation system to control the gas gushing out of the mining face 4: use the air inlet lane 1 of the mining face and the rubber transport lane 2 of the mining face to enter the air, and the auxiliary transport lane 3 of the mining face Return air, wherein the rubber transport lane 2 of the mining face and the auxiliary transport lane 3 of the mining face are connected through the connecting lane 6 every 100m, and the communicating lane 6 is sealed by the airtight wall 7. When the mining face 4 pushes through one of the communicating lanes, Close the airtight wall of the connecting roadway, open the airtight wall of the connecting roadway in front, and have and only one airtight wall of the ...

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Abstract

The invention provides a comprehensive treatment method for gas and coal spontaneous combustion in near-horizontal thick coal seam mining, and belongs to the technical field of prevention and control of mine gas and coal spontaneous combustion. The comprehensive treatment method for gas and coal spontaneous combustion in near-horizontal thick coal seam mining provided by the present invention comprises the following steps: adopting a Y-type downward ventilation system with two inlets and one return deviation to control the gas gushing out of the mining face, and pre-burying the drainage pipe in the connecting roadway , through the extraction pipe to drain the gas gushing out of the coal left in the mined-out area; arrange grouting pipelines and gas injection pipelines in the air inlet lane of the mining face, and continuously inject non-combustible gas into the goaf through the grouting pipelines Solidify the foam, and then continuously inject nitrogen into the goaf through the gas injection pipeline. The invention constructs a three-dimensional prevention and control system for gas and coal spontaneous combustion in near-horizontal thick coal seam mining, realizes precise prevention and control of gas and coal spontaneous combustion coupling disasters, is beneficial to improving the mining efficiency of working faces, and guarantees safe production in mines.

Description

technical field [0001] The invention relates to the technical field of prevention and control of mine gas and coal spontaneous combustion, in particular to a comprehensive control method for mining gas and coal spontaneous combustion in near-horizontal thick coal seams. Background technique [0002] In recent years, with the extension of mines to deep areas, the gas content of coal seams has gradually increased, and gas mines have transformed into high-gas mines or outburst mines, and the amount of gas gushing out of the working face has increased significantly. At the same time, as the mine extends to the deep area, the ground temperature rises, and the coal spontaneous combustion disaster intensifies. In my country, there are quite a few mines where coal spontaneous combustion and gas hazards coexist. If the prevention and control of coal spontaneous combustion is not in place, it is easy to cause gas explosion due to spontaneous combustion of coal seams, resulting in part...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21F7/00E21F5/08
CPCE21F7/00E21F5/08
Inventor 张雷林石必明张美齐钟珍杨前意
Owner ANHUI UNIV OF SCI & TECH
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