The method of using thin-wallcaisson as the supporting structure is quick and economical.
采用薄壁沉箱作为开挖的支护结构，施工快捷又经济合理。
2
The presented computation methods are also applicable to stability analysis of catch drain, impended wall, open caisson and other excavation works during construction.
所述计算原则和方法也适用于分析截水槽、倒挂井、沉井及其他土石开挖工程在施工期的稳定性。
3
A series of measures such as open caisson, thickening protective wall and decreasing length, etc. are taken to overcome problems of sand drafting, collapse and water gushing, which get better effect.