摘要
湘西北岩溶石山缺水地区地形条件复杂,电磁干扰较强,在地下水勘查工作中,优先选用抗干扰能力较强的直流电法较为适宜。工程实践表明:在地势相对较缓且勘探深度相对较浅(0~150 m左右)时,采用小极距视电阻率联合剖面法+高密度电阻率法;在地形条件较差或勘探深度相对较深(0~400 m左右)时,采用小极距联合剖面法+三极激电测深法,并进行适当的反演与解释,既可提高工作效率又解决了实际问题,取得了较好的找水效果。
In the water shortage area of karst mountain in northwest Hunan,the terrain condition is complex and the electromagnetic interference is strong.In the groundwater exploration,the DC method with strong anti-interference capability is preferred.The engineering practice shows that,when the terrain is relatively gentle and the exploration depth is relatively shallow(about 0~150 m),the small distance combined section method of apparent resistivity+high-density resistivity method is adopted,and when the terrain condition is poor or when the exploration depth is relatively deep(about 0~400 m),the small distance combined section method of apparent resistivity and three-pole IP sounding method are used,and proper inversion and interpretation are carried out,which not only improves the working efficiency but also solves the practical problems,and achieves better water finding effect.
作者
李望明
易强
刘声凯
肖利权
李俊
LI Wang-Ming;YI Qiang;LIU Sheng-Kai;XIAO Li-Quan;LI Jun(No.416 Geological Party,Hunan Bureau of Geology and Mineral Exploration and Development,Zhuzhou 412003,China)
出处
《物探与化探》
CAS
北大核心
2020年第6期1294-1300,共7页
Geophysical and Geochemical Exploration
关键词
直流电法
找水
岩溶地区
强电磁干扰
湘西北
DC method
water exploration
karst area
strong electromagnetic interference
northwest Hunan
