【作者】 苏红；

【导师】 刘志斌；

【作者基本信息】 辽宁工程技术大学 ， 环境工程， 2007， 硕士

【摘要】 本文研究了辽宁省排山楼金矿的环境风险评价问题。从物质危险性和工程项目潜在危险性两方面对该金矿进行了风险识别,运用层次分析法从中筛选出含氰废水污染地下水为最大可信事故;然后采用数据频率分析与事件树分析相结合的方法对其进行了定量分析;再根据氰化物污染地下水的幕景假设建立了数学模型。由Matlab求解的计算结果可知,一年一遇降雨淋溶水中氰化物超过地下水Ⅲ类质量标准,防渗工作主要应针对一年一遇的降雨。最后根据氰化物排放对水生生物和人体健康两方面影响的风险评价,得到氰化物污染地下水属于可接受风险。鉴于氰化物是剧毒物质,且在评价中存在很多不确定因素,因此减少尾矿中氰化物的含量、做好露天采坑防渗工作以及闭库后立即覆土绿化是非常必要的。更多还原

【Abstract】 The environmental risk assessment for Paishanlou gold mine in Liaoning was studied in this paper. The risk recognition to the gold mine had been carried out from the material risk and the engineering project risk. The cyanide polluting groundwater had been selected as the maximum credible accident by Analytic Hierarchy Process. Then by the method combined the data frequency analysis with the event tree analysis, the maximum credible accident had been analyzed quantitatively. Subsequently the mathematical model had been established according to the curtain scenery supposition of the cyanide pollution ground water. The results computed by Matlab indicated that the concentration of cyanide caused rainfall surpass III kind of quality standards of the ground water. The measures against infiltrate deal mainly with the rainfall taked place once a year. Finally according to the risk assessment about the influence of cyanide discharged on aquatic lives and human health, it was reached that the cyanide contaminating groundwater belong to acceptable risk. As cyanide is highly toxic substances and there are many uncertain factors in the evaluation, therefore it is very necessary to strengthen risk management.更多还原