草及灌木根系对不同土质边坡稳定性影响分析

Effect Analysis of Grass and Shrub Roots on Stability of Different Soil Slopes

通过建立土边坡有限元模型,运用强度折减法,针对砂、粘土两种土质边坡及有无降雨情况,分析植被根系对不同土质边坡稳定性的影响。结果表明:植被根系能有效的提高边坡的安全系数;坡角的变化不影响植被根系对边坡安全系数的提高;在降雨条件下,边坡稳定性会有一定程度的降低,但植被根系仍能提高边坡的安全系数。

In this paper,considering the effect of vegetation roots changes along with the depth of soil slope,establish finite element model,using the strength reduction method,,focus on clay soil two kinds of soil slope and whether rain or not,to analyze the effects of different vegetation roots on the soil slope stability. The results showed that the vegetation roots can improve the safety coefficient of slope effectively; change of slope angle does not affect the raising of vegetation on the slope safety coefficient of slope; in the rainfall condition,the stability will be reduced to a certain extent,but the roots still can improve the relative safety coefficient of slope.