摘要
大同煤矿集团公司永定庄煤矿的8#、11#、12#、14#煤层已经回采完毕,15#煤层位于8#、11#、12#、14#煤层下方13 m^70 m处,其15#回采8914工作面与8#、11#、12#、14#煤层回采工作面"空间交错垂直",为了保证15#煤层在穿越多个采空区和煤柱下安全高效开采,预防相关事故灾害的发生,提高15#煤层的回采率和机械化水平,对多采空区下15#煤层的顶板矿压技术进行了研究。
8 #,11 #,12 #,14 # coal seams of Yongdingzhuang Coal Mine of DaTong Coal Mine Group has been stoped,the 15 # coal seam is located at 13 m ~ 70 m below 8 #,11 #,12 #,14 # coal seam,8914 stoping face of 15 # coal seam is ＂space staggered vertical＂with the stoping face of 8 #,11 #,12 #,14 # coal seams.In order to ensure that 15 # coal seam which is crossing multi gob and coal pillar is stoped safely,provide against accidents and improve extraction rate and mechanization level of the 15 # coal seam,the roof mine pressure technology of 15 # coal seam below multi gob is studied.
出处
《同煤科技》
2011年第3期15-17,20,共4页
Datong Coal Science & Technology
