软土地区由于土体强度低，地下水位高，流塑性强，基坑失稳事故频发。
Due to low soil strength, high underground water level and strong soil plasticity flow, unstability accidents happened frequently in soft soil area.
在软土地基上建造的高层建筑，有时因地下围护结构的失稳或基坑挖土方法的不当造成基础群桩发生严重位移的工程事故。
The underground pit wall structure unstability or foundation pit excavations accident will cause multi -pile(group- pile) serious movements when high- rise building built on soft ground.
在地下水位较高的地区开挖基坑时，地下水会不断渗入基坑，容易造成流砂和边坡失稳。
When a foundation pit is excavated in high water level, groundwater may cause drift sand and slope failure due to the influent from seepage.
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