Earthwork opening is an organic component in foundation pit construction and attention must be paid to the crustal stress release in treating the packedsoil piles.
土方开挖是基坑工程的有机组成部分，对挤土桩，须重视地应力释放问题。
2
Soil shear strength has a significant decrease due to disturbance after construction of the packed drains, which should be seriously considered for practice technicians and academic authorities.