(1) and the adjacent embankment there is a significant difference or even continuous special parts, shall ensure full compaction of subgrade, making it a certain range in and around the strength and stiffness of the roadbed are basically the same.
(2) dig roadbed filler-fill design. Soil excavation area, should give priority to the use of filling material with good water and road-80cm range in the excavation area soil backfill compaction of overbreak and laying across the cut-fill road at the junction of Georgia.
(3) vertical fill should be set at the junction of transition, transition level is suitable soil lots better ratio of gravel soil, sandy soil and gravel filling.