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

地面沉降对地下水水量和水质的短期和长期影响

• 批准号: 9209059
• 负责人: Derek Elsworth
• 金额: $ 20万
• 依托单位: Pennsylvania State Univ University Park
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-11-15 至 1997-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9209059&HistoricalAwards=false
• 关键词: Short; Long; Term; Impacts; Ground

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.

本研究试图描述沉陷环境中影响井或含水层脱水和含水层污染潜力的主要因素，研究其影响，在开采前量化其程度，并提出减轻不良影响的方法。以往的研究表明，长壁矿山的地层脱水是由底板上方地面沉降引起的变形和破裂模式控制的。水导率和蓄水量的变化可以用简单的物理模型来表示，并用于数值模型来先验地确定脱水势。建议将这项工作扩展到确定瞬态行为，并提供定义水质变化的逻辑扩展。