【摘要】 采用地层结构及其结构因素特征分析方法 ,在覆岩结构、结构类型、水文地质结构类型和水体类型划分的基础上 ,对下沟矿在白垩系基岩裂隙承压强含水层下特厚煤层综放开采 ,首采工作面导水裂缝带高度及上覆含水层透水性进行预测研究。更多还原

【Abstract】 The paper studies the height of water flowing fractured zone and the permeability of strata over the first longwall with top-coal caving face in Xiagou coal mine based on the division of strata structure and hydrological condition which is fracture confined water of cretaceous system basement rock.更多还原