断层f_2对锦屏左岸坝坡静力稳定性的影响

Influence of Fault f_2 on Jinping Dam Left Abutment Slope Static Stability

利用分块极限平衡法分析锦屏左岸由断层f5及f2形成的多刚体模型,并与单刚体模型做了对比。对多刚体模型,充分研究了断层f2对左岸坝坡稳定性的影响。结果表明,断层f2对左岸坝坡稳定性的影响显著,多刚体模型比单刚体模型更适用于锦屏左岸的地质情况。建议在对f5进行混凝土置换加固的同时,也对断层f2进行混凝土置换、加固、灌浆等处理,以提高坝坡的稳定性。

In this paper rigid block partitioned limit equilibrium method is used to analyse the multiple rigid block model formed by faults f_5 and f_2 in Jinping Dam left abutment.Compared with single rigid block model,the multiple rigid block model fully studies the influence of fault f_2 on the dam left abutment slope stability.The study results indicate that the fault f_2 exerts a significant impact on the dam left abutment slope stability and the multiple rigid block model is more appropriate than the single rigid block model to simulate Jinping Dam left abutment condition.It is suggested that while the fault f_5 is treated by concrete replacement and strengthened,the fault f_2 should also be treated with concrete replacement,strengthed and grouted in order to improve the high dam abutment slope stability.