Peculiarities in changes of geocryological conditions on the section of the federal highway «Amur» Chita–Khabarovsk

The paper considers the peculiarities of changes in geocryological conditions on the section “288 km” of the “Amur” highway Chita–Khabarovsk. A comprehensive analysis of cryogenic processes and deformations of the roadbed in the conditions of formation and functioning of a special natural-anthropogenic “highway” system has been carried out. A landscape-geocryological schematic map has been compiled with the boundaries of the natural- anthropogenic system and zones of influence outlined. Engineering geocryological profiles of the deformed section of the highway was built on the basis of seven drilled wells with a depth of 7.5 to 30 m. Thermometric observations were carried out in five wells with the study of the peculiarities of temperature distribution under and near the roadbed. Studies have shown that the causes of deformations of the roadbed are heterogeneous, multidirectional and uneven changes in geocryological conditions as a result of the spatiotemporal formation and development of interdependent natural and man-made processes in the natural-technical system. A number of organizational measures have been proposed to control changes in geocryological conditions and the development of the natural-anthropogenic “highway” system in local areas.