摘要
超前钻孔是煤与瓦斯突出矿井中煤巷掘进工作面的局部防突措施之一。QFZ - 2 2钻机是一种实施超前钻孔的有效工具 ,在华蓥山李子垭南井对用该钻机实施的89mm超前钻孔的有效排放半径进行了试验考察 。
Advancing hole is one of local prevent outburst measure at coal road heading face in coal-and-gas outburst mine.QFZ-22 borehole is an effective tool for implementing advancing hole.After mesureing the effective degassing radius of advancing hole with diameter of eighty-nine implemented by the borehole in south mine of Huayingshan Liziya,it can provide the basis for rational & effective preventive outburst measures worked out.
出处
《煤炭技术》
CAS
2005年第1期41-43,共3页
Coal Technology
基金
国家自然科学基金项目 (5 0 1340 4 0 )
关键词
局部防突措施
超前钻孔
有效排放半径
local prevent outburst measure
advancing hole
effective degassing radius
