渗流作用下软硬互层砂岩边坡稳定性研究

文章利用Midas GTS有限元岩土分析软件,建立了软硬互层砂岩边坡模型,模拟开挖边坡内部土体的变化特征,并把渗流引入计算中,分析渗流作用下边坡的稳定性及影响因素。研究表明:互层边坡滑动特征为土体滑动,切割砂岩形成破坏;渗流对边坡影响显著,但是边坡稳定性对入渗边界和入渗水头压力不敏感;土层厚度对边坡稳定性影响显著。

Slope Stability Studies of Soft and Hard Interbedded Sandstones under Seepage Action

The article established the soft and hard interbedded sandstone slope model by using the Midas GTS finite element geotechnical analysis software,to simulate the variation characteristics of internal soil body in excavation slope,and by introducing the seepage into the calculation,it analyzed the stability and influencing factors of slope under the seepage action.Studies have shown that the sliding characteristic of interbedded slope is the soil-body sliding,which cuts the sandstone and then forms the damage;the seepage has a sig-nificant effect on the slope,but the slope stability is insensitive to the infiltration boundary and the infiltration water-head pressure;and the soil-layer thickness has a significant impact on the slope stability.