Meikuang Anquan (Feb 2020)
Study on Comprehensive Prevention and Control Technology of Fire and Gas Coupling Hazard During Tunneling Period of Baijiao Coal Mine
Abstract
In view of the danger of fire and gas coupling disaster in the upper adjacent goaf of the coal seam caused by the tunneling process of 2274 working face in Baijiao Coal Mine, by means of identifying fire and gas coupling areas in goaf where the flammable explosive concentration range and the width of spontaneous combustion zone overlap, based on the data from the site monitoring, the superimposed area of the spontaneous combustion zone and the CH4 explosive zone is obtained from the working face of the goaf in the direction of the return air side 76 m to 100 m. The safety of mine production is ensured by the integrated prevention and control measures such as strengthening the support of tunneling roadway, grouting in full section, grouting in upper adjacent goaf and gas drainage drilling.
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