地基回弹是工程地质学用语，指地基由于开挖基坑卸荷或在水的饱和下发生膨胀的现象，以软土和膨胀土地基表现最明显。
地下水回升引起地基回弹，沉降变化速率为负值，累计沉降量减少。
The variation rate of subsidence will become a negative value when the groundwater causes the rebound of foundation, in addition, the cumulative subsidence will decrease.
处理后的地基十字板强度增加了3倍，静力触探锥尖阻力增长了5倍，回弹模量满足设计要求。
The strength of vane of silt after treatment increase by 3 times and the static point resistance by 5 times. So, its lasting elastic modulus can meet the design requirements.
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