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土方工程施工中,当在含水率过大的腐植土、粘土、粉质粘土等原状土上进行回填土施工;或用粘土、粉质粘土进行回填土施工时,由于场地内地下水位过高或原土中含水率过大等原因,土常会呈软塑状态,在受务打时发生颤动,且体积不能被压缩,这种土称为橡皮土或弹簧土。如对这种土进行夯击振动,非但不能务实,反而会因振动破坏了土的天然结构,强度会迅速降
In earthwork construction, backfilling shall be carried out on undisturbed soil such as humified soil, clay and silty clay with excessively high water cut; or when clay or silty clay is used for backfill construction, groundwater level in the site is too high or The original soil moisture content is too large and other reasons, the soil often appear soft plastic state, occurred in the fight when the service flutter, and the volume can not be compressed, this soil is called rubber or spring soil. Such as tamping vibration of this soil, not only can not be pragmatic, but due to vibration destroyed the natural structure of soil, the intensity will rapidly drop