渗流与抗滑桩的抗滑稳定性分析

在分析滑坡体水力条件的基础上,指出由于抗滑桩的施工,滑坡体的自然排水通道受阻,导致边坡地下水位的抬高,因而可能会对滑坡体构成新的威胁;讨论了抗滑桩对滑坡体的渗透性影响与滑坡体在抗滑桩作用下的稳定性分析,同时给出了简化条件下抗滑桩桩体部位的渗透系数计算方法。某水利枢纽工程利用抗滑桩和混凝土挡墙加固滑坡体,稳定性计算结果表明抗滑桩的阻渗作用对于滑坡体的稳定性具有较大影响,有必要对坡面坡体进行合理的疏排水处理。

Stability analysis of slope with seepage and anti-sliding piles effect

Based on the analysis of the landslide component elements and hydrogeological characters, it was suggested in this paper that the drainage of the natural slope influenced by the anti-sliding piles might be reduced, which probably raised the underground water level. This could be a new danger to the slope stability potentially. Some efforts focused on the penetrability change of the slope were made with the reinforcement of the anti-sliding piles. Some suggestions about stability analysis of the slope influenced by the anti-sliding piles were proposed. A certain landslide reinforced with the anti-sliding pile was introduced here. The slope stability analysis was performed by limited equilibrium method. The result indicated that anti-sliding piles might lay great effect on the seepage of the slope, so it is necessary for the slope stability to design a reasonable dredging and drainage system.