EH4高频大地电磁法探明地下水埋深的应用  

Application of EH4 High-frequency Magnetotelluric Method in Detecting Groundwater Depth

作　　者：闫永峰 YAN Yongfeng(Xinjiang Water Resources and Hydropower Survey and Design Institute Co.,Ltd.,Changji 831100,China)

机构地区：[1]新疆水利水电勘测设计研究院有限责任公司,新疆昌吉831100

出　　处：《广东水利水电》2024年第2期57-60,共4页Guangdong Water Resources and Hydropower

摘　　要：采用EH4高频大地电磁法,通过二维反演处理,确定低阻异常区,进行定量解释,进而根据物探测试剖面确定基岩界面、埋深和地下水水位埋深情况。结果表明,EH4高频大地电磁法能够有效探明地下水埋深情况,结合水文地质、钻孔资料可较大提高解释精度,可为区域地下水环境调查提供理论依据。EH4 high frequency magnetotelluric method is used to detect the depth of bedrock and groundwater table,which provides a theoretical basis for regional groundwater environment investigation.EH4 high-frequency magnetotelluric data are inversed by two-dimensional inversion to determine the low-resistance anomaly area and explain it quantitatively.According to the geophysical test section,the bedrock interface is determined,and the groundwater depth is deeper than 70m.The results show that EH4 high frequency magnetotelluric method can effectively detect the depth of groundwater,combined with hydrogeology,borehole data can greatly improve the interpretation accuracy.

关 键 词：EH4高频大地电磁法 地下水 电性差异 视电阻率 

分 类 号：P631.325[天文地球—地质矿产勘探] TV211.12[天文地球—地质学]