高密度电法在城市地下水和土壤有机污染调查中的应用  

The application of high-density resistivity method in organic pollution survey of groundwater and soil of cities

作　　者：姜月华[1] 吴吉春[2] 李云[1] 周迅[1] 周权平[1] 刘林[1] 贾军元[1] 苏晶文[1] 施小清[2] JIANG Yuehua;WU Jichun;LI Yun;ZHOU Xun;ZHOU Quanping;LIU Lin;JIA Junyuan;SU Jingwen;SHI Xiaoqing(Nanjing Center, China Geological Survey, Nanjing 210016, Jiangsu, China;Nanjing University, Nanjing 210093, Jiangsu, China)

机构地区：[1]中国地质调查局南京地质调查中心,江苏南京210016 [2]南京大学,江苏南京210093

出　　处：《华东地质》2021年第1期1-8,共8页East China Geology

基　　金：中国地质调查局“长江经济带地质环境综合调查工程(编号:0531、0802)”;“长江经济带地质资源环境综合评价(编号:DD20190260)”;“长三角南京—上海—温州城镇规划区1∶5万环境地质调查(编号:DD20160246)”项目联合资助。

摘　　要：运用高密度电法对苏南某城市NH化工厂场地地下水和土壤进行了勘查,发现在地下17~45 m的含水层和土壤存在多个超过100Ω·m高电阻异常区。通过钻探和化学测试验证,发现这些高电阻异常区均为受到高浓度有机污染物影响的污染晕,据此进一步扩大了勘察范围,从而圈定出地下污染物的空间分布状况,并确定了污染物的来源和迁移规律。研究表明,应用高密度电法勘查化工厂场地地下水和土壤有机污染是行之有效的,是探测地下有机污染晕非常经济方便的方法,建议加以推广使用。High-density resistivity method has been applied to explore groundwater and soil pollution of NH chemical plant in the south of Jiangsu in this paper.The results indicate that there are several anomaly areas with high resistance more than 100Ω·m in the aquifer underground of 17~45 m.The anomaly areas virtually are pollution plumes of dense non-aqueous phase liquids with high concentrations,which are verified by drilling and chemical analysis.According to the characteristics of anomaly areas,further exploration has been carried out in the site to identify spatial distribution,sources and migration of underground pollutants.The study shows that the application of high-density resistivity method to explore organic pollution of groundwater and soil in chemical plants is effective,economic and convenient.It is recommended to popularize the method in the exploration of organic pollution plume.

关 键 词：高密度电法 地下水 土壤 有机污染 污染晕 

分 类 号：P631.3[天文地球—地质矿产勘探] X53[天文地球—地质学]