房柱式残采区蹬空开采可行性研究

以大同精通兴旺整合重组煤矿为研究背景，首先采用理论计算初步判定了9#煤层蹬空开采的可行性和12#煤层残采区煤柱稳定性，然后借助钻孔注水和钻孔窥视等技术从现场实测的角度揭示了9#煤层蹬空开采的岩层结构特征。研究结果表明：房柱式残采区上覆岩层冒落带高度距离不超过10m，裂隙带高度约为25m，9#煤层位于12#煤层房柱式开采形成的弯曲下沉带，岩层仅出现内部损伤，未出现大范围台阶下沉，整体性和完整性较好，可以进行蹬空开采。

Research on the feasibility of kicking mining with room and pillar mining in residual area

Based on the research background of Datong mastery of the integrated and reorganized coal mine, the feasibility of 9# coal bed kicking and the stability of coal pillar in 12# coal bed pillar type mining area are first determined by theoretical calculation, and then the rock stratum structure in the kicking of 9# coal seam is revealed by the technology of borehole flooding and borehole peeping. The results show that the height distance of the overlying strata in the room column residual zone is not more than 10m, the height of the fracture zone is about 25m, and the 9# coal seam is located in the curved subsidence belt .The rock stratum has only internal damage, no large-scale step subsidence, good integrity and integrity, can be exploited by kicking mining.