摘要
对于极近距厚煤层开采,易诱发冲击地压。本文以岳城煤矿3号煤层为工程背景,提出"区段窄煤柱护巷+工作面错位布置"在巨厚坚硬岩层下极近距厚煤层冲击地压防范技术。通过数值模拟验证了区段窄煤柱护巷避免了在上煤层遗留煤柱和采动覆岩内产生高应力集中区,工作面错位布置既减小了巷道围岩压力,又减小了下煤层开采的冲击危险性。
For the mining of extremely close and thick coal seam,it is easy to induce rock burst.Based on the engineering background of No.3 coal seam of Yuecheng Coal Mine,this paper puts forward the protection technology of the rock burst in the extremely close and thick coal seam under the thick and hard rock formations of ＂narrow coal pillar roadway ＋ the dislocation arrangement of working face＂.The numerical simulation shows that the narrow coal pillar roadway in the section avoids the high stress concentration area in the upper coal seam and the mining overburden.
作者
冯杰
Feng Jie(Yuecheng Coal Mine of Shanxi Jincheng Anthracite Mining Group Co., LTD., Shanxi Jincheng 04800)
出处
《山东煤炭科技》
2018年第8期159-162,共4页
Shandong Coal Science and Technology
关键词
极近距厚煤层
冲击地压
数值模拟
extreme short distance
thick coal seam rock burst
numerical simulation
