Soft soil foundation is common in the eastern inshore alluvial plain areas in our country where soil strength low and underground water level high . Instability accidents happened frequently in soft soil foundation pits and basal upheave is one of the most common form of destruction .

我国东部沿海冲积平原地区多为软土地基，地下水位高、地基土强度低，经常发生基坑失稳事故， 坑底 隆起破坏是其中常见的一种基坑失稳形式。

In 1950 s the method to analyze upheave of deep excavation was given .

50年代 科学家给出了分析深基坑 底板 隆起的方法。

Design and Clinical Application of Device to Upheave Depressed Nipple

乳头 隆起器的设计与临床应用