穿层钻孔有效排放半径测定新方法  

A New Measurement Method for Effective Emission Radius of Cross-measure Boreholes

作　　者：蒋承林[1,2] 王智立[1] 李晓伟[1,2] 

机构地区：[1]中国矿业大学安全工程学院,江苏徐州221116 [2]煤炭资源与安全开采国家重点实验室,江苏徐州221008

出　　处：《矿业安全与环保》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)

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.

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 

分 类 号：TD712[矿业工程—矿井通风与安全]