目前国内外在饱和软弱地层中进行基坑开挖,都要减少基坑开挖对周围环境所造成的影响,从而在基坑开挖时不仅要保证基坑的稳定,还必须严格控制基坑的隆起变形。上世纪90年代上海的工程建设者们探索采用时空效应理论指导基坑开挖的方法,即对基坑分层分条块的开挖,严格控制每块土体 At present, excavation of foundation pit in saturated and weak strata both at home and abroad should reduce the impact on the surrounding environment caused by the excavation of the foundation pit so as to not only ensure the stability of the foundation pit when excavating the foundation pit, but also to strictly control the foundation pit The bulge deformation. The project builders in Shanghai in the 90s of last century explored the method of guiding the pit excavation using the theory of space-time effect, that is, the excavation of the sub-block in the pit and the strict control of each soil