Assessment, prediction and management of long-term post-closure water quality: a case study — Hlobane Colliery, South Africa
Assessment, prediction and management of long-term post-closure water quality: a case study — Hlobane Colliery, South Africa
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DOI：
10.1144/gsl.sp.2002.198.01.20
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发表时间：
2002
期刊：
影响因子：
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通讯作者：
R. Hattingh;W. Pulles;R. Krantz;C. Pretorius;S. Swart
中科院分区：
文献类型：
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作者：
R. Hattingh;W. Pulles;R. Krantz;C. Pretorius;S. Swart
位于南非Vryheid煤田的Hlobane煤矿在经历了一个多世纪的采矿活动后，将关闭其业务。本文回顾了为确定矿山关闭后的长期水质风险并评估各种水管理行动的影响而进行的评估。采用了一种综合评估方法，其中包括水文、水文地质、矿物学和地球化学评估以及建模技术，以预测在没有实施水管理备选方案的基本情况下，从矿山不同地点排出的水量和水质。确定了主要旨在防止清洁水污染的各种水管理备选方案，并预测了这些战略的效果，并与基本情况进行了比较，以便为选择最适当的战略提供合理依据。
Abstract Hlobane Colliery, located in the Vryheid Coalfields of South Africa, is to close down its operations after more than a century of mining activities. This paper presents a review of the assessments that were undertaken in order to determine the long-term water quality risks after mine closure and evaluate the effects of various water management actions thereon. An integrated assessment approach was adopted that incorporated hydrological, hydrogeological, mineralogical and geochemical assessment, and modelling techniques to predict the volumes and qualities of water discharging from various points on the mine for the base case situation where no water management options were implemented. Various water management options were identified that are primarily aimed at preventing the contamination of clean water, and the effects of these strategies were predicted and compared with the base case situation in order to provide a rational basis for the selection of the most appropriate strategies.