贵州糯东井田水文地质条件分析

通过对井田内泉和暗河流量的调查研究，认为永宁镇组一、三段碳酸盐岩裂隙溶洞水为井田的主要含水层，含水层主要接受大气降水及河流的渗透补给；煤层上覆地层飞仙关组为相对隔水层，厚度大于500m，下覆无强含水层，其地下水对煤层的开采影响不大，井田水文地质条件较简单。采用比拟法对井田的涌水量进行了预算，推算该矿井开采设计涌水量为13 238m^3/d。

Hydrogeological Condition Analysis of Nuodong Minefield, Guizhou

Through investigation and research on discharge rates of springs and sunken streams in the minefield, considered that the main aquifer is Yongningzhen Formation No.1 and No.3 members carbonate rock fissured karstic cave aquifer, mainly recharged by atmospheric precipitation and stream percolating water. Coal seam overlying strata Feixianguan Formation is a relative confining bed with a thickness 〉500m, no underlying strong aquifers existed, thus no major threat to coal mining from underground water, minefield hydrogeological condition is rather simple. Simulation method is used to estimate mine inflow, estimated design water yield of coalmine is 13,238m^3/day.