渗流对抗滑桩加固滑坡后的影响效果评价

对抗滑桩布设于滑坡体后,导致滑坡体有效渗流断面下降和地下水位抬高,从而造成滑体重度增加,滑带综合黏聚力和摩擦角下降,致使滑坡治理后的稳定性难以达到预期设计效果等方面问题进行研究。运用体积平均法、自洽法和Hashin-Strikman法,对采用抗滑桩治理后滑坡的加固效果进行探讨,提出较为可行的抗滑桩加固效果评价方法。最后,对某县滑坡采用抗滑桩治理后的稳定性进行分析,对治理效果进行评价。

EVALUATION OF EFFECTS OF SEEPAGE ON LANDSLIDE REINFORCED BY ANTI-SLIDING PILES

The anti-sliding piles have been used in the treatment of geological hazards;the construction technology and theories of anti-sliding piles have been researched and developed.After the construction of the anti-sliding piles is completed,the effective seepage section of landslide will diminish,the underground water level of landslide will increase,the unit weight of landslide will increase but the effective cohesion and friction angle of sliding zone of landslide will decrease.The designed anti-sliding stability of landslides after pile construction is studied.The effects of landslide treatment by anti-sliding piles are also investigated by using volume average method,self-consistent method and Hashin-Strikman method;an available method is proposed to evaluate the effectiveness of anti-sliding pile reinforcement.Finally,the stability of landslide reinforcement by anti-sliding pile is performed.The effect of anti-sliding pile treatment is evaluated.