PROBLEM SOLUTION FOR EXPLOITATION OF ROAD STRUCTURES AT THE RUSSIAN FAR EAST NORTHERN AREAS

The paper covers some issues of safety and continuous work on railroads at northern parts of the Russian Far East, the Baikal-Amur Mainline (BAM) and Amur-Yakutsk Mainline (AYaM) in particular. The permafrost-bound problems of a railway construction and operation are described. The aim of the research is to find the solutions for a stable work of railroads in the conditions of increased freight traffic and a growing road deformability. Some experimental sections on the above mentioned roads are determined after the monitoring observations, and new reinforcement structures are installed. The solutions are offered taking into account the causes of the problems. The problems that cause the increased deformability are solved with a combination of traditional and new methods suggested by the authors who also offer the devices invented to do the research. Some of the authors' developments for the subgrade stabilization in the frost heave, thermokarsts, polygonal-veined ice formation and aufeis conditions are given as they are applied at real working projects. The reliable work of the reinforcing structures for 10 to 18 years and more proves the effectiveness of the solutions. The authors' 30-year experience of survey, monitoring and software development for the areas with above mentioned problems can be useful for the specialists working in the similar conditions.