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Assessment of Water-Protective Sequence at the Verkhne-Kamsky Deposit of Salts from 3D Inversion Results of EMS-IPNormal access

Authors: A. Belova, Y. Davydenko, A. Zhukov, D. Bogdanovich, S. Bukhalov, M. Shkirya and K. Abornev
Event name: 25th European Meeting of Environmental and Engineering Geophysics
Session: Geophysics for Geotechnics
Publication date: 11 September 2019
DOI: 10.3997/2214-4609.201902448
Organisations: EAGE
Language: English
Info: Extended abstract, PDF ( 645.77Kb )
Price: € 20

Summary:
Application of ground-based methods of electromagnetic sounding in geology-and-engineering survey allows assessment of geological structure in terms of discovering potentially dangerous low-resistivity zones. For this purpose, the method of electromagnetic sounding and induced polarization (EMS-IP) turned out to be highly efficient. The method implies excitation of transitional processes with grounded dipole and registering with receiver lines. Considering inversion within 1D model, it was feasible to specify the horizontally bedded structure of sedimentary sequence above the potassium mine, and to outline potentially dangerous objects of increased conductivity. At the next stage, the obtained model produces initial approximation for 3D inversion of transitional processes. As a result, position of the increased conductivity field was rectified both in plan and over depth.


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