利用废弃露天采场干排尾矿工程的环境风险评价

Environmental risk assessment of discharging mine tailings engineering by using open pit abandoned

研究了排山楼金矿利用废弃的露天采场作为尾矿库工程的环境风险评价问题。首先识别了工程的环境风险,分析了污染途径,然后根据氰化物在流域内的降解规律及其流域内的水文条件,确定了氰化物降解系数,估计了工程的环境风险,最后依据氰化物的排放标准和质量标准对工程进行了环境风险评价,并提出了相应的防渗措施和规避环境风险的对策。

In this paper environment risk assessment of the mine tailings reservoir engineering making use of open pit abandoned at Paishanlou Gold Mine was carried out. First the environment risks of the engineering were recognized, then the pollution pathways were analyzed, after that according to the degrading law of cyanide and the hydrographic condition in this river basin, degrading coefficient was determined, the environment risks of the engineering were estimated. On the basis of the discharge standards and quality standards about cyanide, the environment risk assessment of the engineering were carried out, and the precautions preventing cyanide seepage and the countermeasures avoiding environment risks are presented.