摘要
尾矿库是矿山生产环节的必建场所,对周边生态环境有深远影响。以甘肃南畔铜矿为研究对象,运用Visual MODFLOW建立三维可视化水文地质模型,并通过MT3DMS溶质运移模块对4种特征污染物在无防渗和防渗破损两种非正常工况下进行污染物运移规律模拟和预测,从而验证尾矿库的可靠性,为尾矿库周边环境污染治理提供依据。结果表明:污染物在地下水中沿水流方向运移,随运移距离的增大,污染物浓度逐渐减小;总磷和氨氮运移距离远,对水环境的影响超过总砷和六价铬;相对于尾矿库无防渗,尾矿库采取防渗措施,可以有效降低对地下水污染的风险。
Tailing pond is a necessary construction for mining production,which has a profound impact on the surrounding ecological environment. This paper takes a copper mine at southern Gansu Province as the research object,using Visual MODFLOW to establish visible three-dimensional hydrogeological model. The MT3 DMS module was used to simulate and predict solute transport characteristics of 4 kinds of pollutants under two kinds of working conditions（ no impervious layer and damaged impervious layer） so as to verify the reliability of the tailings pond and provide the basis for the surrounding environment pollution control.The results indicated that the pollutants transported along the flow direction in the groundwater,and the pollutant concentration decreased with the increase of the migration distance. Total phosphorus and ammonia nitrogen’s migration distance were far,the impact on the water environment was more than that of total arsenic and six valence chromium; compared with no impervious layer,tailings with anti-seepage measures can effectively reduce the risks of groundwater pollution.
出处
《水资源与水工程学报》
CSCD
2017年第2期120-125,共6页
Journal of Water Resources and Water Engineering
