矿井水回灌后的水位数值模拟及预测

Water line modeling and predicting after recharging with mining water

为定量评价矿井水回灌对含水层水动力条件的影响,以梧桐庄矿为例,在分析矿井构造及水文地质基础上,应用水位观测数据模拟矿井水回灌后地下水的流场分布特征。概化地层含水性质,建立水文地质概念模型,设定模型的边界条件。根据抽水和注水试验数据初始化模型,使用FEFLOW软件对目标层的两种涌水量模式进行数值模拟;结合停灌后水位观测数据评价矿井水回灌对奥陶系灰岩含水层水位的影响,预测回灌水量固定情况下含水层渗流条件的变化,为矿井生产排水量设计提供依据。

The influence of recharging mining water was evaluated quantitatively to the power of water in aquifer.Evaluation was done after recharging.Structure and hydro-geology condition were analyzed in Wutongzhuang mine.Distribution of underground water flowing was modeled with observed data in well.Hydrology concept model was set up by approximating water storing ability of stratum.Boundary condition was set up.Modeling was initialized with observed data from pumping and injecting experiment.Two proportion of water amount were chosen to modeling with FEFLOW software.Comparing with stable water line depth after injection, the influence to Ordovician limestone aquifer was evaluated.Changes on leaking and flowing in Ordovician limestone aquifer were predicted.Fundamental material for draining water in mine was got from the modeling.