含软弱夹层边坡稳定性分析及预加固处理研究

Study on stability analysis and pre-reinforcement treatment of slope containing weak interlayer

以某高速公路含淤泥质土软弱夹层高边坡为例,采用理正分析软件,对边坡未开挖到位和边坡开挖到位两种情况,进行边坡稳定性分析。结果显示,未开挖到位边坡处于基本稳定状态,开挖到位边坡处于不稳定状态,其剩余下滑力达到1230.5 kN。根据整体边坡稳定验算成果、剩余下滑力的大小及分布,对现坡脚采取抗滑桩+挡土板预加固处治,以保证边坡后期开挖后的整体稳定。

Taking a high slope with silt-containing soil and weak interlayer as an example,using Lizheng analysis software,the slope stability calculation are carried out for the two cases of unexcavated slope and slope excavation in place.Power checking.The results show that the unexcavated slope is basically stable.The excavated slope is in an unstable state,the remaining sliding force reached 1230.5 kN.According to the results of the overall slope stability check and the size and distribution of the remaining sliding force,anti-slide piles+retaining plates are used to pre-reinforce the existing slope foot to ensure the overall stability of the slope after the later excavation.