【摘要】 通过对保护水资源重要性与采煤条件的分析,指出了在洛河砂砾岩含水层下采煤是目前彬长矿区在理论上和技术上亟待解决的突出难题之一。以某井田为例,通过对其地质条件、水文地质条件、覆岩结构类型的分析、以及综放开采覆岩破坏导水裂隙带高度的预计,确定了洛河砂砾岩含水层下防水煤岩柱留设的原则,着重分析了在工程实践中要注意观测和研究的问题。更多还原

【Abstract】 The paper introduces importance of water conservation and mining conditions.It is one of many problems that how to excavating coal under Hydrous Luohe Grit Rock in Bincharg mining area.The paper forecasts the fracture height in the condition of top coal caving mining by analyzing geologcal and hydrogelological condition,coving rock types,then puts forward a reasonable method of how to choose safety pillars under water-bodies.It is suggested that special attention should be paid in practise.更多还原