地下水位变化对某边坡稳定性影响的分析

The Influence of Groundwater Level Change on Slope Stability

为了更加清楚地了解地下水对边坡稳定性的影响,基于强度折减法,运用FLAC 3D软件对某非均质土质边坡进行了数值模拟分析,计算土质边坡的安全系数,找出边坡的可能滑动面,考虑在地下水的影响下边坡安全系数的变化。结果表明:在不考虑地下水作用时,边坡稳定性较好,安全系数为1.551;地下水位升高后,会对边坡稳定性产生较大影响,安全系数从1.551下降至1.168,需要对此边坡进行支护以提高边坡稳定性。

In order to know more clearly how groundwater affects slope stability,based on strength reduction method,this paper uses FLAC 3 D software to carry out numerical simulation analysis on a heterogeneous soil slope,calculates the safety factor of the soil slope,finds out the possible sliding surface of the slope,and considers the change of slope safety factor under the influence of groundwater.The results show that the slope stability is good and the safety factor is 1.551 when the action of groundwater is not considered.After the groundwater level rises,it will have a great impact on the stability of the slope,and the safety factor will drop from 1.551 to 1.168.Therefore,the slope needs to be supported to improve the stability.