淮南煤矿采空沉积区重金属生态危害研究  

Potential ecological risk of sediments in initial stage coal mining subsidence water area

作　　者：范廷玉[1] 王顺[1] 张梅丽 陈威[1] 

机构地区：[1]安徽理工大学,安徽淮南232001 [2]合肥天泽土地勘测规划有限公司,安徽合肥230000

出　　处：《湖南城市学院学报（自然科学版）》2015年第3期93-95,共3页Journal of Hunan City University:Natural Science

基　　金："动态沉陷区氮素在积水区-包气带中迁移转化机制研究"(国家自然科学基金41402309);安徽理工大学硕博士基金;安徽理工大学第三批中青年学术骨干基金;大学生创新创业计划项目资助

摘　　要：以典型的沉陷初期（0-10年）的采煤沉陷积水区作为研究对象,选择了4个沉陷积水区,布设了11个底泥采样点,进行了春、夏两季的表层底泥的样品采集,分析测试了Cu、Pb、Zn、Cd、As共5种重金属元素,采用地积累指数法和潜在生态危害指数法对张集矿区塌陷塘底泥重金属污染进行分析和评价,结果表明：采煤沉陷区底泥中地累积指数Cd最高,达到了6级严重污染其次为Pb、Cu、Zn,属0~1级轻度污染,As处于0级清洁无污染,沉陷区底泥中各种重金属的污染程度由强至弱依次为：Cd〉Pb〉Cu=Zn〉As;Cd、Pb的Hakanson生态危害系数均值分别为332.81、1.76,Cd达到了强生态危害水平;综合来看,采煤沉陷区底泥中重金属Cd污染情况最严重。4 subsidence water areas were chosen among initial stage（0~10years） coal mining subsidence water areas, 11 sediments sample spots were located and samples were collected, monitoring five heavy metals such as Cu、Pb、Zn、Cd、As, and using geoaccumulation index（Igeo） and potential ecological risk index（Er） to analyze and evaluate heavy metal pollution. Results showed that Igeo of Cd was highest and reached heavy pollution degree of 6 class, then Pb、Cu、Zn belonged to slightly polluted degree of 0~1 class. Er of Cd and Pb were 332.81, 1.76, Cd reached strong ecological risk level. On the whole, pollution of Cd was serious in sediment of coal mining subsidence water area.

关 键 词：采煤沉陷积水区 底泥 重金属 地积累指数 潜在生态危害 

分 类 号：X32[环境科学与工程—环境工程]