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

本研究试图描述主要因素 影响水井或含水层的排水和含水层污染 潜在的沉降环境，检查其影响， 在开采前量化其规模，并提出方法 以减轻不期望的影响。以前的工作已经说明了 长壁矿井上方的地层降水是由 地面沉降变形破裂模式 在面板上方。水力传导性和储存变化可能 用简单的物理模型表示，并用于数值计算。 模型，以确定脱水潜力的先验。拟 扩展这项工作，以确定瞬态行为，并提供一个 在定义水质变化方面的逻辑扩展。

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.