岩土力学2011，Vol.32Issue(2)：398-402,416,6.
降雨条件下土坡变形机制的离心模型试验研究
Centrifuge model tests for deformation mechanism of soil slope during rainfall
摘要
Abstract
A series of centrifuge model tests for deformation mechanism of soil slopes under rainfall were conducted using the rainfall simulation system in centrifuge.The models were loaded to 50g; and then the rainfall was generated.The displacements of slopes during the rainfall were measured by the image-analysis-based system; and the suctions of typical positions were measured by the tensiometers TS.The results show that the displacements of slopes increased as the rainfall proceeded and the deformation area centralized on the face of the slope and gradually enlarged as the water penetrated into the soil.The strain changing of soil elements has a close relationship with the suction variations.The strain of a typical soil element started to increase quickly just as the water content increased of the element.The strain of the soil element increased as the rainfall proceeded.The strain-rainfall curve has two inflexions; and based on which two fronts are defined.The slope is divided into three parts by the two fronts; and the deformation process of the slope can be described by the fronts' movement.关键词
降雨/边坡/离心模犁/变形分类
建筑与水利引用本文复制引用
钱纪芸,张嘎,张建民..降雨条件下土坡变形机制的离心模型试验研究[J].岩土力学,2011,32(2):398-402,416,6.基金项目
中国水利水电科学研究院开放研究基金973课题(No.2007CB714108). （No.2007CB714108）
