Geo-radar work in the Arctic: the experience of ROSDORNIA

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Alexander Kulizhnikov, Head of the Department of Design Methods of the Federal State Enterprise "ROSDORNII", Professor, Doctor of Technical Sciences, made a report on the prospects of using GPR technologies in the transport construction of the Arctic zone at the 77th research conference "Prospects and solutions of problems in the field of transport construction in the Arctic".

The length of the federal highway network in the Arctic zone is 730 km. Given the climatic features, the development of transport infrastructure here is impossible without the use of innovative technologies.

The experience of ROSDORNIA, which includes work on road facilities in the Arctic region for two decades, has shown the effectiveness of georadar surveys of highways, engineering and geological surveys during the laying of routes, exploration and evaluation of stocks of road-building materials and pre-track quarries, etc.

- The advantages of using GPR in the Arctic are obvious: with a relative permittivity from 2 to 5, the electrical resistance of permafrost rocks is enormous, - Alexander stressed Kulizhnikov. - This causes small absorption coefficients and a high speed of propagation of radio waves in them, and, consequently, a large depth of radar research by georadar. At the same time, it should be noted that these high-performance non-destructive methods solve the problem of saving a unique ecological system in the Arctic.

In this direction, the Institute has developed and put into effect by Rosstandart two interstate standards, amended the Code of Rules 78.13330.2012 "Highways", and also prepared and introduced by Rosavtodor four industry road techniques.