导墙对地下墙泥浆槽壁的稳定作用分析

Analysis of Stability Actions of Guide Wall on Slurry Trench Sides of Diaphragm Wall

通过对导墙在防止地下墙泥浆槽壁塌坍方面的各种作用因素的分析，建立起计及导墙稳定作用和考虑了土拱效应的槽壁稳定分析方法，导出在导墙作用下的坍体底斜面临界倾角αｆ和护壁泥浆临界相对密度ｄｆｍａｘ的计算公式。所得计算分析结果符合工程实际情况，为工程计算提供了科学依据。

Based on analysis of all stability actions factors of guide walls on slurry trench sides of diaphragm wall,the methods of stability analysis of slurry trench sides of diaphragm wall,considering the actions of guide wall and soil arch action,are founded,and the critical dip angle of slump mass′ bottom and the corresponding critical specific gravity of slurry propping trench sides are deducted.The theoretical calculating and analyzing results for some cases fit in practice.It is clear,that the method presented in this paper is correct and provides a scientific basis for engineering calculating.