CAJ | 학술논문

研究矿业活动重金属的释放、迁移及累积特征对于控制和治理矿区水土环境污染具有重要的意义。本文通过广东大宝山矿区水土污染源调查及横石河流域沿岸水土样品采集，以研究区土壤对照值及国家环境质量为标准，试图探讨了大宝山矿区重金属迁移及累积特征。研究结果表明，横石河沿岸土壤重金属元素主要来自采矿活动的酸性废水的排放，土壤中Cd、Pb、Cu和Zn的含量均超过对照值，呈现出明显的累积特征，且Cd、Cu含量超过了国家土壤环境质量标准；土壤中重金属累积程度及其风险等级呈现出从源头向下游递减的特点，其中凉桥、水楼下地段农田重金属处于高风险区，阳河-莲心村虽有累积，但无风险；上坝村地处土壤重金属累积的中风险区，下坝村处于低风险区。研究结果为矿区重金属污染防治提供了重要依据。
연구광업활동중금속적석방、천이급루적특정대우공제화치리광구수토배경오염구유중요적의의。본문통과엄동대보산광구수토오염원조사급횡석하류역연안수토양품채집，이연구구토양대조치급국가배경질량위표준，시도탐토료대보산광구중금속천이급루적특정。연구결과표명，횡석하연안토양중금속원소주요래자채광활동적산성폐수적배방，토양중Cd、Pb、Cu화Zn적함량균초과대조치，정현출명현적루적특정，차Cd、Cu함량초과료국가토양배경질량표준；토양중중금속루적정도급기풍험등급정현출종원두향하유체감적특점，기중량교、수루하지단농전중금속처우고풍험구，양하-연심촌수유루적，단무풍험；상패촌지처토양중금속루적적중풍험구，하패촌처우저풍험구。연구결과위광구중금속오염방치제공료중요의거。
The study of the release,migration and accumulation characteristics of heavy metals by mining activities is of important sig-nificance for the prevention and control of environmental pollution of soil and water in the mining area. In this paper, through collec-tion of soil and water samples along the Hengshi River during the survey of Dabaoshan mining pollution and with the soil control val-ues of the study area and the national environment quality as the evaluation standard, the authors studied migration and accumulation characteristics of heavy metals in the Dabaoshan mining area. The result shows that the soil heavy metal elements along the Hengshi River mainly come from mining activities of acid waste water emissions, the concentrations of soil Cd, Pb, Cu and Zn are higher than the local control values, showing obvious accumulation characteristics, with Cd, Cu content exceeding the national standard of soil environmental quality. Heavy metal accumulation in soil and its level of risk degree show decreasing characteristics from the source to the downstream area. Liangqiao Village and Shuilouxia Village are areas of high risk in soil heavy metals;Yanghe River-Li-anxin Village area has no risk in spite of some accumulation of heavy metals;Shangba Village is located in medium risk zone of the ac-cumulation of soil heavy metals;Xiaba Village is located in low risk zone. The research results provide an important basis for the pre-vention and control of heavy metal pollution in mining areas.