The characters of freeze-thaw deformation and the treatment technics of road slopes in plateau and mountain area

摘要

According to the analysis,there are five types of deformation failure of the slopes along the road which are shallow freeze-thaw creeping of gravel soil slopes in plateau meadow area,cracking of soft rock high slopes by weathering and freeze-thaw cycling,freeze-thaw slump along the planes of consequent rock slopes,freeze-thaw collapse of big colluvial gravel slopes and freeze-thaw slide along basal rock of residual gravel soil slopes.Grassing,water draining,SNS flexible protection net,concrete insert repair,anchored retaining wall or concrete pier,root pile and anti-sliding pile are selected to treat these deformation failures based on different situation.