Application Study on Boreholes-Wall Joint Excavation and Drainage Technology

摘要：

When the gas drainage technology ofsectorjoint excavation and drainage is applied to extra-thick coal seam it cant reduce the gas from the coal wall effectively, this paper analyzed that default and studied the gas drainage principle of the boreholes-wall joint excavation and drainage; after having used the technology of the boreholes-wall joint excavation and drainage in the Chen Jiashan Coal Mines 421 lanway, the effect indicated that the gas drainage rate of it could reach more than 75 per cent which is far more than that of the gas drainage technology ofsectorjoint excavation and drainage, so the technology is a very effective gas drainage method to fit the extra-thick coal seam.

关键词： extra-thick coal seam boreholes-wall joint excavation and drainage gas drainage rate

作者: WANG Zhaofeng XU Dongfang CHEN Xiangjun

作者单位: School of Safety Science and Engineering,Henan Polytechnic University,Jiaozuo 454003,Henan,China

会议类型: 国际会议

会议名称: The 2008 International Symposium on Safety Science and Technology(2008年安全科学技术国际会议)

会议地点: 北京

会议语种:英文

页码: 1451-1455

在线出版日期: 2008-09-24（万方平台首次上网日期，不代表论文的发表时间）