The horizontal thickness of covering soil is 1.6m (including the cutting thickness of 0.3m). How to ensure the stability of aeolian sand subgrade in the process of widening and reconstruction will be related to the warranty period of expressway, Shen Sui.
Preparation of the lower bearing layer: after adjustment to the design elevation, it will be leveled and rolled. 2.2 Report to the laboratory that the detection compaction degree is 90. Plastic slope repair: the deviation of subgrade width is 0~200mm, and the slope will not fall; Deviation of subgrade top elevation: 30 ~ 100 mm