摘要
结合高家梁煤矿工作面开采条件及岩石力学性能,利用UDEC数值模拟软件,对自开切眼至充分采动全过程覆岩随工作面推进时的变形、冒落情况进行了数值模拟,得到浅埋煤层不同开采阶段上覆弱胶结顶板的破断及运动规律。研究表明:浅埋弱胶结顶板在初次来压期间经历直接顶垮落、形成"类基本顶"、基本顶断裂三个阶段。
Based on the mining conditions of Gaojialiang Coal Mine and its rock mechanical performance.the deformation and caving of overlying strata during the whole process from open off cut to fully mining were simulated with UDEC. Break and movement laws of weakly cemented roof in shallow seam at different mining stages were obtained. Studies show that the weakly-cemented roof in shallow seam experiences three stages during the initial pressure：col lapsing of immediate roof, forming of similar basic roof,and breaking of basic roof.
出处
《山东科技大学学报（自然科学版）》
CAS
2015年第2期36-40,共5页
Journal of Shandong University of Science and Technology(Natural Science)
基金
山东省"泰山学者"建设工程专项经费项目
山东科技大学"矿山压力与岩层控制"创新团队基金项目(2010KYTD105)
山东科技大学研究生创新基金项目(YC140301)
关键词
浅埋煤层
弱胶结
顶板破断
数值模拟
shallow seam
weak cementation
roof break
numerical simulation
