MOTOR ROAD ON PERMAFROST Russian patent published in 1999 - IPC

FIELD: road building; construction of main pipeline. SUBSTANCE: motor road has pavement, road embankment made of mineral ground and side interlayers of nonwoven synthetic material laid on base. Outer edge of each interlayer is placed on part of corresponding slope of embankment and is driven into embankment body. Road is made with underslope trenches of rectangular section, depth not less than ice bed thickness and width not less than season melted ground bed thickness, and is provided with two continuous cutoff walls arranged in trenches. Each cutoff wall is made up of set of containers of equal thickness filled with mineral ground with height equal to depth of trench. EFFECT: enhanced reliability of road. 3 cl, 2 dwg