破碎围岩巷道变形特征及支护参数优化OA北大核心CSTPCD
Deformation Characteristics and Supporting Parameters Optimization of Broken Surrounding Rock Roadway
巷道帮部破碎围岩在采动应力诱发下的动力灾害问题严重制约现场安全高效掘进.针对破碎围岩巷道帮部突然性断裂垮落致诱动力灾害问题,根据巷道地质条件和布局,考虑顶底板帮部裂隙分布规律和开采扰动影响,采用现场勘察、理论分析、数值计算和微震现场监测等手段和方法,综合分析破碎围岩巷道变形特征及支护参数优化设计.结果表明:受重力作用,岩层顶板在拉伸应力作用下拉伸应力区呈U形破坏分布,巷道经过支护后,顶板运移量大幅度减小,同时减缓覆岩整体性破坏程度;受巷道掘进扰动…查看全部>>
The dynamic disaster induced by mining stress seriously restricts the safety and efficiency of tunneling. To solve the problem of induced dynamic disaster caused by sudden collapse of the side of broken surrounding rock roadway, according to the conditions and layout of roadway, consider the roof and floor for fracture distribution and mining disturbance, the field survey and theoretical analysis, numerical calculation and field monitoring means and methods,…查看全部>>
杨皓博
陕西彬长小庄矿业有限公司,陕西 彬县 713500
矿业与冶金
破碎围岩巷道支护顶板失稳巷道片帮安全掘进
broken surrounding rockroadway supportroof instabilitywall cavingsafe driving
《煤矿安全》 2019 (9)
160-163,4
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