摘要
为了快速测定穿层钻孔的有效排放半径,提出了基于初始释放瓦斯膨胀能确定安全临界瓦斯压力和含量,进而确定穿层钻孔有效排放半径的新方法。通过在泉水沟煤矿的现场实测,得到钻孔的安全临界瓦斯压力为0.63 MPa,安全临界瓦斯含量为5.99 m3/t,有效排放半径为1.5 m。
In order to rapidly measure the effective emission radius of the cross-measure boreholes, this paper put forward anew method for determining the gas pressure and content based on the expansion energy of the initial gas release and thendetermining the effective emission radius of cross-measure boreholes. Through the site test in Quanshuigou Coal Mine, themeasured safety critical gas pressure is 0.63 MPa,, the safety critical gas content is 5.99 m3/t and the effective emission radius ofcross-measure boreholes is 1.5 m.
出处
《矿业安全与环保》
北大核心
2014年第3期85-87,91,共4页
Mining Safety & Environmental Protection
基金
中国矿业大学青年科技基金项目(2009A004)
关键词
初始释放瓦斯膨胀能
瓦斯压力
穿层钻孔
有效排放半径
expansion energy for initial gas release
gas pressure
cross-measure boreholes
effective emission radius
