GPR Technologies for Predicting the Development of Dangerous Cryogenic Processes in Subsurface Soils

Abstract

Abstract The paper presents the results of comprehensive engineering and geophysical studies on road sections of the city of Yakutsk. Actual studies aimed at improving modern geophysical technologies and methods for studying frozen rocks are considered. The results of studying the characteristic features of wave fields to develop signs of interpretation and prediction of the development of dangerous cryogenic processes in subsurface soils according to GPR data are presented. The data of two-stage autumn-spring measurements are presented, the results of which made it possible to study the complex cryogenic structure of the road section of Dzerzhinsky Street. Good convergence of the GPR results with the data of electrical exploration (non-contact measurement of apparent resistance) on the section of Lenin Avenue is shown. Potentially dangerous areas of the development of dangerous cryogenic processes associated with permafrost degradation were identified on the basis of low resistivities on the obtained ρk graphs and on the basis of the presence of discontinuities in the events, chaotic signals and low-frequency reflections in the radar section.