In hills region, a new equilibrium system will formed after the original stability of slop body was collapsed by excavationworks of underground engineering.
在丘陵地区进行地下工程开挖将破坏坡体原有的稳定性，并形成新的平衡体系。
2
The presented computation methods are also applicable to stability analysis of catch drain, impended wall, open caisson and other excavationworks 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
The excavation speed of pilot shaft is one of the key difficulties for the excavation of shaft, high ones in special, of hydropower works.