Mirny Polytechnic Institute (Branch), Ammosov North-Eastern Federal University, Mirny, Russia:

E. E. Soloviev, Director, Candidate of Geologo-Mineralogical Sciences

Chersky Institute of Mining of the North, Siberian Branch, Russian Academy of Sciences, Yakutsk, Russia:
D. V. Savvin, Senior Researcher, Candidate of Engineering Sciences, deophysic@mail.ru
L. L. Fedorova, Leading Researcher, Candidate of Engineering Sciences

The studies on the characteristic features of the georadar wave fields, as well as the development and adaptation of GPR for integration with other geophysical methods are presented. The results of the joint use of GPR and electrical resistivity tomography, as part of the in-method complex, having common electrophysical bases, to solve the problems of studying the negative cryogenic processes in soil foundations of mining and engineering structures are analyzed. It is shown that several types of anomalous wave patterns are distinguished according to georadar data, confirmed both by the data of geoelectric sections and by the data of borehole drilling. The article describes geocryological conditions of frozen rock mass, their main electrophysical properties, georadar models of seasonal thawing–freezing layer and talik. The experimental geophysical studies are presented in terms of the dam survey within the Kangalas coal mine, protecting the open pit mine from surface water, as well as in the right-of-way of the main pipeline. The field geophysical technique as well as the data processing and interpretation results are considered.
This study was supported by the Russian Foundation for Basic Research, Project No. 18–45–140061-r_a.

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