【摘要】 大跨度复合泥岩顶板煤层巷道是围岩变形剧烈且顶板易冒落、极难维护的巷道。针对该类巷道围岩破坏特点,提出桁架锚索组合支护技术,结合白龙煤矿2-1101切眼,采用有限元软件进行支护参数优化模拟分析,并对桁架锚索组合支护技术的经济效益进行分析。更多还原

【Abstract】 The coal seam tunnel of compound mudstone roof of large span is the tunnel that is violent out of shape,roof is easy falling and safeguard is very difficult.In accordance with the destroyed characteristic of the kind tunnel wall rock,puts forward the technology of combination support of truss and anchor rope,combines the 2-1101 cross tunnel in Bailong coal mine,by adopting the limited element software carries on optimizing to imitate and analyse support parameter and analyses economic benefits of the technology of combination support of truss and anchor rope.更多还原