Short-and-Long-Term Impacts of Ground Subsidence on Ground- water Quantity and Quality

这项研究试图描述影响井或含水层降水的主要因素和下沉环境中含水层的污染潜力，检查它们的影响，在开采之前量化它们的大小，并提出减轻不良影响的方法。前人的工作表明，长壁矿山上方的岩层降水受盘区上方地表下沉引起的变形和破裂模式控制。水力传导性和蓄水能力的变化可以用简单的物理模型来表示，并在数值模型中用于先验地确定降水潜力。建议将这项工作扩展到确定瞬时行为，并在定义水质变化方面提供一个合乎逻辑的扩展。

This research attempts to characterize the main factors influencing well or aquifer dewatering and aquifer contamination potential in subsiding environments, examine their effect, quantify their magnitude in advance of mining and propose methods to mitigate undesirable effects. Previous work has illustrated that strata dewatering above longwall mines is controlled by the deformation and fracturing patterns induced by ground subsidence above the panel. Hydraulic conductivity and storage changes may be represented by simple physical models and used in numerical models to determine dewatering potential a priori. It is proposed to extend this work to determine transient behavior and provide a logical extension in defining changes to water quality.