柳塔煤矿煤层上覆含水层特征及其对矿山充水影响分析

Characteristics of Aquifer over Coal Seam and Analysis of Water Filling in Liuta Coal Mine

针对柳塔煤矿矿井涌水量增加的趋势,为探究柳塔煤矿12上、12煤层开采期间的矿井充水影响,评价了煤层上覆含水层的富水性及各含水层之间的水力联系,分析了上覆基岩力学特征,预计了煤层开采破坏覆岩高度和防水安全煤柱尺寸,在此基础上分析了12上、12煤层同时开采时上覆含水层对采掘工作面的影响。

Aiming at the increasing trend of water inflow in Liuta coal mine,in order to probe the effect of water filling during 12 upand 12 coal seam mining,evaluated the water abundance of overburden aquifers and their hydraulic connection,made analysis of the mechanical characteristics of overlying bedrock,predicted the height of overlying bedrock destroyed and the size of waterproof and safe coal pillar.Based on the above,analyzed the influence of overlying aquifer on working face during12 upand 12 coal seam mining simultaneously.