Application of Gas Extraction Technology in Xiangyuan Coal Mine Coal Mining Face
Based on the differences in gas emission locations in the 1304 coal mining face of Xiangyuan Mine,a comprehensive gas extraction plan was developed to extract gas from the coal body to be mined in the face by using parallel and through layer boreholes,burying pipes into the goaf,and drilling long-distance high-level boreholes,achieving efficient gas extraction.The analysis of the gas extraction effect shows that the gas extracted from the working face and goaf accounts for 75%of the gas emission,and the maximum gas concentration in the upper corner and return airway is less than 1%,which meets the requirements for gas concentration.
coal minecoal mining facegasprevention and control technology
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