棋盘井煤矿水文地质特征分析及涌水量计算
Analysis of Hydrogeological Characters and Water Inflow Calculation in Qipanjing Coal Mine
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摘要: 分析了棋盘井煤矿水文地质特征，确定了井田西区9#、16#煤的直接充水水源是9#煤自身老空水及石炭系上统太原组~二叠系下统山西组第二岩段直接顶板含水层水，奥陶系中统桌子山组灰岩水为威胁最大的潜在充水水源，顶板导水裂缝带、底板原始导升带、疑似陷落柱、断层及封闭不良钻孔为主要充水通道，井田东区除不存在奥陶系中统桌子山组灰岩水外，充水因素与西区一致。基于不同出水点出水机理的差异，采取对固定水量和变化水量采用不同的涌水量计算方法预测了西区矿井正常涌水量为244.5 m3/h，最大涌水量为440.7 m3/h。Abstract: In this article, hydrogeological characters of Qipanjing Coal Mine were analyzed,it is concluded that the direct water-filling source of 9# coal seam and 16# coal seam are 9# coal seam goaf water and aquifer in carboniferous upper Taiyuan formation to the second section of immediate roof rock aquifer of permian lower Shanxi group, the limestone aquifer in middle ordovician Zhuozishan formation is maximum potential threat of water-filled water. The main water-filling channels are roof water flowing fractured zone, floor original water rising zone, suspected collapse column and fault and poor sealing borehole. Based on the different water yielding mechanism in different water yielding points, fixed water volume and changed water volume were calculated by different methods in western area where the normal mine discharge is 244.5 m3/h and the maximum mine discharge is 440.7 m3/h.
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