潘北矿灰岩地下水流场动态变化及影响因素分析

Dynamic Changing of Groundwater Flow Field and Analysis of Its Influenced Factors in Panbei Limestone Deposit

潘北矿地面灰岩观测孔水位监测数据表明:井田灰岩地下水位随矿井疏放水呈现不同幅度近直线型下降,在放水试验期间有一定起伏。受灰岩含水层集中疏放位置影响,东、西翼分别形成一个以E5、WS1为中心的降落漏斗;放水试验后,因集中疏放位置发生改变,形成了以E5至WS1为中心的大型降落漏斗。灰岩地下水流场的这种动态变化特征与灰岩含水层疏放量、集中疏放位置、所接受的补给来源及径流条件关系密切。

The groundwater level observation data collected from observation sites in Panbei limestone deposit shows that groundwater level there decreases along with drainage. Before the drainage test, E5 - centered and WS1 - centered cone of depression located in east and west wing of Panbei deposit respectively. The result of test indicates that dynamic change of groundwater flow field affected by the variation of drainage volume, location of drainage well, recharge source and runoff condition.