地下水的损伤作用及对基坑失稳的影响分析  

Calculation of Slope Stability of Foundation Pit Subjected to Groundwater

作　　者：朱世平[1] 孙强[2] 

机构地区：[1]中国地质大学(北京),北京100029 [2]中国科学院地质与地球物理研究所,北京100029

出　　处：《中国非金属矿工业导刊》2007年第3期75-76,58,共3页China Non-Metallic Minerals industry

摘　　要：地下水的存在给工程带来了巨大的隐患。如何研究分析地下水对工程的作用是地质工程界的一个重点和难点。本文基于地下水的破坏效应,分析研究了地下水引起的应力的变化,并推导了饱水情况下平面滑动的临界角变化公式。随着地下水的加入,在水压力以及地下水对土体力学性质改变的基础上,发生失稳破坏的临界角θ变小,造成了在地下水的作用下土体容易发生失稳破坏。Ground water is the key factor which does more harm to the foundation pit project. How to analyze and study the effect of ground water on the project is a difficult and important subject. In this paper, based on the destruction effect of ground water, the change of stress of ground water is analyzed, and the equation to calculate critical angel of planar slide under saturation condition is deduced. When the groundwater is calculated, the critical angel of failure t9 is smaller, However, the increase of ground water pressure helps the effect stress lessen, that is to say the ground water pressure makes the soil mass is easier to fell into failure.

关 键 词：基坑失稳 地下水压力 临界角 

分 类 号：TU462[建筑科学—结构工程]