摘要
针对中煤平朔井工二矿碎裂厚煤层工作面运输巷道片帮严重,且存在冒顶危险,提出了锚杆锚索联合支护技术。根据该矿的实际地质条件确定了相应的支护方案。运用FLAC3D数值软件对该方案进行了模拟分析,认为该方案可以有效增加巷道围压,减小巷道位移变形。现场应用显示,该支护方案可行,控制效果良好。
In view of the caving danger of the haulage roadway with thick and broken coal roof in No. 2 Mine of Pingshuo Group, the combined support technology with bolt and anchor cable was proposed. According to the geological conditions of the mine, the appropriate support program was determined. The simulation analysis by FLAC3D software showed that the program could effectively increase the roadway confining pressure, reduce roadway displacement and deformation, and thus keep the stability of the surrounding rock. Site practice showed that the support program was feasible and the control effect was good.
出处
《中国煤炭》
北大核心
2013年第10期46-49,共4页
China Coal
基金
中央高校基本科研业务费资助项目(2011YZ02)
关键词
碎裂厚煤层
松软巷道
巷道支护
支护方案
FLAC3D数值模拟
现场观测
fractured thick coal seam, soft roadway, roadway support, support program, FLAC3D numerical simulation, field observation
