砂土边坡稳定性离心模拟试验研究

Study on Centrifuge Modeling Test for Sandy Slope Stability

根据全国水利学会岩土物理模拟试验专委组织的离心模拟平行试验,进行了砂土边坡稳定性离心模似试验研究。试验采用福建标准砂,研究不同边坡倾角和含水率对砂性土边坡稳定性的影响和试验后边坡含水率的变化。试验设置了三组不同坡角和含水率的试验来进行对比,验证了在一定范围内含水率的变化对边坡稳定性的影响,坡角变化对边坡稳定性的影响,并利用非饱和土的强度与含水率的关系理论,探讨了砂性土边坡稳定性与含水率的关系,并得出了试验后含水率的变化规律。

According to the parallel centrifuge modeling test organized by the Geotechnical Physical Simulation Test Committee of Chinese Hydraulic Engineering Society,this paper studied sandy slope stability by centrifuge modeling test,wherein Fujian standard sand was used to study the influence of slope inclination and moisture content on sandy slope stability,and the change of moisture content in the slope after the test.By the setting of three different groups of inclination angle and moisture content for comparison in the test,it was verified within certain range the change effects of the moisture content and the slope angle on the slope stability,then the relation between the sandy slope stability and moisture content was discussed by using the theory of relation between unsaturated soil strength and moisture content to conclude the change law of moisture content after the test.