内蒙古陈旗煤田构造作用对基岩含水层的影响分析

Analysis of Influence of Tectonic Fault Blocks on Bedrock Aquifer in Chenqi Coalfield, Inner Mongolia

通过对内蒙古陈旗煤田水文地质单元、补泾排特征、充水通道、地下水流场分析、矿化度分析,明确其基岩含水层的水文地质单元为周边的控盆断层。南部以F3断层为界,北部以F4断层为界,东部以东大沟断层为界。受盆内南北向断层的发育,其地下水流场及矿化度呈明显的分区性。中东部地下水水位较高,地下水活动性较强烈;中西部地下水水位较低,活动性较弱,矿化度较高。

Through the analysis of hydrogeological unit in Chenqi coalfield,Inner Mongolia,the condition of groundwater recharge-runoff-discharge,water filling channel,groundwater flow field,salinity, defining that the hydrogeological unit of its bedrock aquifer is the surrounding basin-bounding faults. The south is bounded by F3 fault and bounded by F4 fault in the north,Dongdagou-fault is east boundary.Controlled by the south-north faults,the groundwater flow field and salinity show obvious regionalization.The mideast area has higher groundwater level and stronger groundwater activity. Conversely,the groundwater level in midwest regions is lower,the activity is weaker,and the mineralization is higher.