4、填方边坡施工要求：采用砂类土、碎石类土回填并分层压实（分层厚度约3

4, the construction fill slope requirements: use of sandy soil, gravel and the layers separated earthen backfill compaction (layer thickness about 300mm), the coefficient of compaction of not less than 92%, surface using clay, loam and compacted backfill backfill shall not sandwiched roots, shells and other organic and inorganic debris and construction waste; prohibited the use of expansive soil, silty soil, cultivated soil backfill.

4, filling slope construction requirements: the use of sand soil, gravel soil backfilling and layered compaction (layered thickness of about 300mm), compaction coefficient is not less than 92%, the surface using clay, sub-clay backfilling and compaction, backfilling soil must not be sandwiched with grass roots, shells and other organic and inorganic debris and construction waste; Cultivate the soil backfilling.

4. Requirements for construction of filling slope: sand soil and gravel soil shall be used for backfilling and compacted in layers (thickness of layers is about 300 mm), and the compaction coefficient shall not be less than 92%. Clay and loam shall be used for backfilling and compaction of the surface layer. There shall be no organic and inorganic sundries such as grass roots and shells and construction waste in the backfill. It is strictly prohibited to use expansive soil, muddy soil and arable soil for backfilling.