摘要
瓦斯抽采半径的确定是制定防突措施的根本依据,合适的选取能充分利用钻孔以提高矿井的瓦斯抽采率。本文利用相对瓦斯压力指标来现场试验测定凤凰山煤矿16~#煤层抽采瓦斯半径,得出抽采时间为80 d时,抽采有效半径为2.2 m,抽采影响半径为3.2 m。
Determination of gas drainage radius was the fundamental basis of formulating gas outburst prevention measures, suitable choice of drainage radius could make the most of boreholes to improve gas drainage rate. This paper used relative gas pressure index to take in-situ test to measure drainage radius of No. 16 coal seam at Fenghuangshan Mine, the test results showed that effective drainage radius was 2.2 m and influenced radius was 3.2 m when drainage time was 80 days.
出处
《中国煤炭》
北大核心
2017年第4期137-139,144,共4页
China Coal
关键词
抽采半径
相对压力指标
顺层钻孔
极限抽采时间
drainage radius, relative pressure index, drilling along level bed, limit drainage time
