Research and application of large section pillar reduction technology in thick coal seam
In order to increase the recovery rate of coal resources and to improve the maintenance situation of section drift,a new way of roadway layout of the working face is put forward.Through theoretical analysis and engineering practice,section coal pillar is cut from original 50 m to 7.5 m.The large pillar left in the original design of roadway layout can be recovered,which achieved very good economic benefits.This research result provides theoretical basis for section drift layout design under similar geological conditions.
thick coal seam large coal pillar lateral stress coal recovery rate
Z.P.Guo Y.Wang
College of Resources and Environmental Engineering, Shandong University of Science and Technology,Qingdao, Shandong, China
国际会议
香港
英文
337-339
2012-12-01（万方平台首次上网日期，不代表论文的发表时间）