【摘 要】
：
为了安全有效的上行开采遗弃的煤炭资源,根据汾西张家庄煤矿煤层赋存条件及开采现状,通过理论分析及UDEC离散元数值软件模拟研究了10#煤层、9#薄煤层分别开采时上覆岩层破坏
【机 构】
：
中国矿业大学(北京)资源与安全工程学院,
论文部分内容阅读
为了安全有效的上行开采遗弃的煤炭资源,根据汾西张家庄煤矿煤层赋存条件及开采现状,通过理论分析及UDEC离散元数值软件模拟研究了10#煤层、9#薄煤层分别开采时上覆岩层破坏和移动规律。对比分析了泥岩和石灰岩2种典型岩性结构覆岩运动变形规律。通过监测煤层开采过程中覆岩随开挖时步位移变化,得出泥岩岩性结构覆岩开采稳定时间要短于石灰岩岩性结构覆岩,与现场情况一致。
In order to safely and effectively mine abandoned coal resources, according to the occurrence conditions and mining status of coal seams in Zhangjiashuang coalfield in Fenxi, theoretical analysis and UDEC discrete element numerical simulation were used to study the overlying strata Destroy and move the law. The deformation and deformation of overlying strata of two typical lithologic structures of mudstone and limestone are compared and analyzed. By monitoring the displacement of overlying strata along the excavation process during the process of coal seam mining, it is concluded that the stability time of overburden strata in mudstone lithology structure is shorter than that of limestone lithological structure, which is consistent with the on-site situation.
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