龙南离子型稀土矿山地质环境质量评估研究

龙南县离子型稀土矿存在三废排放产生污染、土地破坏和废渣的不规范堆放等问题,导致了生态环境的极度恶化.以该县区典型稀土矿区环境为研究对象,提出了矿山地质环境质量评估指标体系和评估方法,由此得到了矿区的地质环境质量评估等级,分析了造成重大矿山地质环境问题的主要成因.研究结果表明,富坑、龙南县矿和关西稀土矿3个典型稀土矿的质量评估等级分别为极差、极差和差,其主要原因是稀土矿开采、尾砂和废石排放以及大雨降水所导致.该成果为该县稀土矿山地质环境的治理提供重要的指导依据,研究结果对南方其它离子型稀土矿山地质环境的治理具有借鉴作用.

Quality assessment of geological environment of ion-absorbed rare-earth mine in Longnan County

Problems such as three wastes, damage of lands and non-standard stacking of residue waste in ionabsorbed rare-earth mines result in the serious deteriorating of ecological environment in Longnan Country. In this paper, the present situation mine environment is analyzed with the typical mine geological environment after rare-earth mining as subject. The environment quality assessment index system and the method of environmental evaluation is built as well. Quality evaluations to the three rare-earth mines of Longnan County are carried out based on this. The results show that the environmental qualities of the three typical mines of Fukeng, Longnan and Guanxi are poor and very poor. The main causes can be attributed to the mining, rocktailings emissions and mass precipitation. The locale experiment indicates that this work can serve as an important guidance for the environmental management of the rare-earth mines in Longnan County, and has popularizing significance for other rare-earth mines in South China.