Island outburst coal seam strong and weak coupling structure multi-disaster integrated prevention and control method
The invention discloses an island outburst coal seam strong and weak coupling structure multi-disaster integrated prevention and control method, which comprises the following steps of: laying a floor roadway on a lower overlying rock layer below a coal seam of an island working face, integrating mul...
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Main Authors | , , , , , , , , |
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Format | Patent |
Language | Chinese English |
Published |
18.10.2022
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Subjects | |
Online Access | Get full text |
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Summary: | The invention discloses an island outburst coal seam strong and weak coupling structure multi-disaster integrated prevention and control method, which comprises the following steps of: laying a floor roadway on a lower overlying rock layer below a coal seam of an island working face, integrating multi-disaster integrated prevention and control measures into the floor roadway, and continuously draining accumulated water in goaf areas on two sides of the island working face; after completion, drilling a gas extraction partition hole in a coal pillar adjacent to the goaf, cutting off a channel through which gas flows to the coal roadway from the goaf, and injecting high-strength cement grout into two sides of the coal roadway to enhance the strength of the coal body and reduce deformation of the coal roadway; due to the fact that the rock burst phenomenon of the island working face roadway appears seriously, after grouting reinforcement is conducted on a coal seam, a strong-weak coupling structure is formed by a |
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Bibliography: | Application Number: CN202210799819 |