中硬偏硬覆岩高强度综采覆岩裂缝带发育规律研究

 为了研究中硬偏硬覆岩高强度综采条件下覆岩裂缝带发育规律，根据潞安矿区王庄煤矿6206工作面开采地质条件，利用现场实测、数值仿真、相似材料模拟等手段综合研究确定了中硬偏硬覆岩综放一次采全厚导水裂缝带的发育高度。结合潞安五阳煤矿分层综采裂缝带高度观测资料，分析表明中硬偏硬覆岩高强度综采条件（分层综采和综采放顶煤）覆岩裂缝带高度与 成正比更符合现场实际情况，裂高采厚比达到20.2倍，所得经验公式可以用来类似条件下开采覆岩破坏高度预计，获得的裂高可以作为潞安矿区水体下采煤留设保护煤柱及保水采煤方案制定的参考依据。

Study on Height of Water Flowing Fractured Zone Induced by High-Strength Fully Mechanized Mining Under Medium-Hard Overlying Strata

According to mining geological conditions of fully mechanized sublevel caving face of 6206, height of water flowing fractured zone under medium-hard overlying strata is determined by the way of field measurement, numerical simulation and similar material simulation. Combining observation data of fully mechanized slicing mining in Wuyang coal mine, it is stated water flowing fractured zone height is in direct proportion to , and the proportional coefficient is 20.2, which is suitable for field condition. Experiential formula can be used to predicted height of water flowing fractured zone in similar conditions. It provides reference for determining dimension of coal pillar when mining under water bodies and water conservation.