Big diameter and long drilling-holes technology and its application in drainage gas in Dingji coal mine

摘要：

　　Taking advantage of the method of big diameter and long drilling-holes in coal seam roof instead of roadway method to drainage gas from coal seam, aimed at the condition of deep coal seam and high risk of outburst in Dingji coal mine.The amount and rate of drainage gas was increased, and decreased the time and engineering amount of drainage gas, and effectively diminished the risk of outburst of coal and gas.And a new approach adapt to Dingji coal mine to drainage gas is acquired.

关键词： big diameter and long drilling-hole drainage gas outburst of coal and gas

作者: CAI Feng

作者单位: Key Laboratory of Safety and High-efficiency Coal Mining, Ministry of Education, Anhui University of Science and Technology, Huainan 232001, China;School of Energy and Safety, Anhui University of Science and Technology, Huainan 232001, China

会议类型: 国际会议

会议名称: International Mining Conference 2014(2014国际采矿论坛)

会议地点: 安徽淮南

会议语种:英文

页码: 311-315

在线出版日期: 2014-09-19（万方平台首次上网日期，不代表论文的发表时间）