开平煤田宋家营勘查区煤层开采充水因素分析

Kaiping Coal Seam Exploitation SongGuYing Exploration District Water Filling Factor Analysis

通过对宋家营勘查区的水文地质条件、含隔水层特征、地下水动态及各含水层之间的水力联系等因素的分析,为矿井开采水害防治提供参考资料和决策依据。影响煤层开采主要直接充水含水层为各主要可采煤层顶、底板及煤层间砂岩含水层,上第三系底部半胶结砂、砾岩仅在局部为直接充水含水层。奥灰含水层上距12煤层144.38～150.81m,其间有厚层粉砂岩、泥岩隔水层,正常情况下,奥灰水不会对煤层开采构成威胁,结合邻区钱家营矿井水文地质资料对比,勘查区矿床水文地质类型除断层导水外为水文地质条件中等的裂隙(局部孔隙)充水矿床,即:二类二型。

Based on the SongGuYing exploration hydrogeologieal conditions, including water-resisting layer characteristics, dynamic groundwater and each aquifer of hydraulics relations between the analysis of factors, for mine mining flood prevention and control reference material and decision- making basis. Coal seam mining directly affect mainly for the main water filling aquifer reeogrtize base-level cycle of roof and floor, and coal seam between the upper tertiary middle and bottom aquifer, sandstone half cemented sands, in local conglomerate only for direct water filling aquifers. Mr Grey aquifer on 144.38 ~ from 12 coal seam 150.81 m, there is thick layer silty sandstone and mudstone water-resisting layer, under normal circumstances, Mr Grey water will not pose a threat to coal seam mining, combined with adjacent area money home camp mine hydrogeologieal data comparison, exploration district deposit hydrogeology type except fault guide water outside for hydrogeological conditions of fracture pore medium （local） water filling deposits, namely： the category of type ii.