MOTOR ROAD AT PERMAFROST GROUNDS Russian patent published in 2020 - IPC E01C3/06 

FIELD: construction.

SUBSTANCE: invention relates to construction and operation of motor road on permafrost soils. Automobile road on permafrost soils, including roadbed from local off-grade soil with reinforcing waterproof geosynthetic and heat-insulating materials arranged in sloping parts, characterized by that in the longitudinal trenches developed on both sides of the base, the depth below the active layer, vertically there is a reinforcing waterproof geosynthetic material, and in the sloping part of the roadbed, above the level of short-term water, are arranged in a trapezoidal form of big bags with heat-insulating granulated material, free edges of waterproof reinforcing geotextile are put on the surface of big bags with maximum tension and minimum overlapping width of 30 cm, reinforcing waterproof geosynthetic material limits penetration of water into base of road and into road bed, above reinforcing waterproof geotextile there is layer-by-layer filling with compacting of road bed, with device of road clothes, and on sloping part of road bed there are biomats with powdering with substandard soil.

EFFECT: this solution provides higher stability of roadbed, allows to reduce vertical and horizontal deformations of coating, stabilize water-and-heat mode of base and roadbed of motor road, to keep ground of base in frozen state.

1 cl, 2 dwg