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《Mining Safety & Environmental Protection》 2018-03
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Research on the Parameters and Abnormal Characteristics of Gas Drainage in High Level Drainage Roadway

ZHENG Jiyu;WANG Gongzhong;HAN Jian;School of Safety Science Engineering,Henan University of Engineering;Jincheng Anthracite Mining Group Co.,Ltd.;  
This paper introduced the theory of gas drainage in high level drainage roadway,the reasonable gas drainage parameters in high level drainage roadway was determined combined with site experience,including negative pressure,drainage horizon and horizontal distances. The results showed that the negative pressure either too high or too low is not conducive to gas drainage in high level drainage roadway,the appropriate range of it is from 12 k Pa to 15 k Pa.According to the field observation,the gas drainage effect is good when the distance from high level drainage roadway to the roof of the coal seam is between 49 m to 54 m.Based on the"O"ring theory,the horizontal distance is determined as 35.1 m.In view of the abnormal phenomenon of gas drainage during the drainage process in high level drainage roadway,the reason of it was analyzed,and the rationality of the selected parameters is proved indirectly.
【Fund】: 国家自然科学基金项目(51604091);; 河南省科技攻关项目(172102310738);; 河南省科技开放合作项目(172106000073);; 河南工程学院博士基金项目(D2015025 D2016021)
【CateGory Index】: TD712.6
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