抚顺煤矿西露天采场裸露岩石的污染潜势研究  

Study on Potential Pollution of Original Rocks of the Opencast in the West of Fushun City

作　　者：孙丽娜[1] 王洪[1] 李玉双[1] 李英华[1] 

机构地区：[1]沈阳大学环境工程重点实验室,沈阳110044

出　　处：《水土保持研究》2006年第2期78-80,97,共4页Research of Soil and Water Conservation

基　　金：国家自然科学基金(20477029);国家自然科学基金重点基金项目(20337010);国家973项目专题(2004CB418506);沈阳大学博士启动基金

摘　　要：利用净产酸量、净产酸势实验和连续化学浸取实验,研究了抚顺西露天采场裸露岩石的酸化潜势和重金属的表生活动性。结果表明,露天采场的裸露岩石在自然风化过程中会发生酸化,油母页岩属于中高度产酸范围,绿色泥岩、褐色泥岩处于低度产酸范围。原岩中Zn的潜在表生活动性最强,原岩中Zn含量的95%左右可被带出,进入表生环境;Cd,Cu,N i的潜在表生活动性有所差异,但原岩中Cd,Cu,N i含量的50%以上可被浸出进入表生环境;Pb的潜在表生活动性相对较小,只有20%的可被浸出进入表生环境。研究结果为预测煤矿开采环境污染的程度和防治提供了理论依据。The acidification potential of bareness rocks and potentially surficial mobility of heavy metals in bareness rocks were studied by acid production potential test ,net acid production test and sequential extraction experiment. The results showed the bareness rocks would produce acidification during weathering. The net production of the kerogen is in the range of middle-high produced acid,yet green and brown shale is lower. The potentially surficial mobility of Zn in bareness rocks was the highest, and 95% of Zn in bareness rocks is extractable fraction. The potentially surficial mobility of Cd, Cu and Ni were some different, but the extractable fraction were more than 50% of those in bareness rocks respectively. Potentially surficial mobility of Pb is the lowest with the extractable fraction 20%. Those results provided scientific basis for forecast and control on coal mine exploitation.

关 键 词：露天采场 酸化潜势 重金属污染 赋存状态 化学活动性 

分 类 号：X53[环境科学与工程—环境工程]