三峡库区兴山县某挡土墙变形破坏成因机制分析

Analysis on Mechanism of Deformation and Destruction of a Retaining Wall in Xingshan County of The Three Gorges Reservoir Area

简要介绍兴山县某挡土墙的的基本现状,阐述挡土墙主要变形破坏形式。针对挡土墙的变形破坏特征,结合边坡地质条件,分析了挡土墙的变形破坏的成因及形成机制,认为挡土墙较高,导致墙后主动土压力大,是造成挡土墙变形破坏的主要原因;工程建设后期堆载过大、墙后填土截排水措施不完善等也是影响挡土墙稳定性的重要因素。

The current situation,as well as the mode of deformation and destruction of the retaining walls in Xingshan county are introduced in this paper.On the basis of the feature of the retaining wall＇s deformation destruction,and combining with the slope geological condition,mechanism of deformation and destruction is analyzed.The result shows that the higher retaining walls are easer to lead to great active earth pressure,the height of the retaining walls is the main factor,inducing the retaining walls＇ deformation and destruction.Surcharge load in post-construction phase,incomplete drainage measure are the main factors which affect the stability of the retaining walls.It has a certain reference value for similar engineering construction.