Due to the strong attenuation effect of loess cover on seismic and electromagnetic waves, the successful application of seismic reflection wave method and electromagnetic wave method in loess covered area is limited.In view of the characteristics of large thickness and fine stratification of loess cover, the active source and passive source surface wave methods are combined in this paper, so that the advantages of the two surface wave methods are complementary and the geological stratification of loess covered area can be accurately detected.The study area is located in the suburb of Fengxiang County,Weihe Basin.It is a typical loess covered area, and the thickness of loess cover is 80~120 m.By processing the measured data of active and passive surface waves in the study area, the positions of the main strata on the 2D shear wave velocity profile are basically consistent with the actual borehole test results, and the 3D stratum structure in the study area is also obtained.The results of joint imaging show that it is feasible and effective to use passive and active surface wave joint exploration for stratification of loess covered area, which provides technical support and beneficial idea for geological mapping of loess covered area.
邵广周, 李远林, 岳亮. 主动源与被动源面波联合勘探在黄土覆盖区三维成像中的应用[J]. 物探与化探, 2022, 46(4): 897-903.
SHAO Guang-Zhou, LI Yuan-Lin, YUE Liang. Joint application of active and passive surface wave in 3D imaging of loess covered area. Geophysical and Geochemical Exploration, 2022, 46(4): 897-903.
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