高密度电法不同电极排列方式的探测效果对比

Interpretation on Survey Results from High-density Resistivity Electricity Methods with Different Electrode Arrays

本文以甘肃景泰小红山断层隐伏段为探测目标,对同一剖面采用α排列、β排列、γ排列及α2排列四种电极排列方式进行了高密度电法探测及效果对比,探测结果表明,同一电性结构在不同电极排列方式下的视电阻率剖面互不相同,各有特点,反演结果虽然都能基本揭示真实电性结构,但解译中一定要注意根据所选择的探测方式剔除相应的电性结构假象。

High-density resistivity tomography was conducted by using α array,β array, γ array and a2 array measurements along the same survey line aimed to investigate the XiaoHongshan blind fault in Jingtai, Gansu Province. The results show that the apparent resistivity pseudosection of each measurement method is different to each other and has its own features. Although all inverse model resistivity section can reveal the real underground electrical structure, in interpretation, the false electrical structure should be identified in survey practice.