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【目的】提出考虑渗流驱动力作用下的岸坡稳定的修正传递系数法。【方法】分析《重庆市地质灾害防治工程设计规范》(DB50 5029-2004)(后简称《规范》)中三峡库区岸坡渗流驱动力计算方法的不足,建立类土质岸坡渗流驱动物理模型,提出岸坡渗流驱动力精细化计算方法,考虑渗流驱动力修正了类土质岸坡稳定性计算的传递系数法。【结果】三峡库区凉水井滑坡实例分析表明,《规范》中的方法和本文方法得到的稳定系数分别为1.061和1.074,《规范》中的方法关于渗流驱动力计算过于保守。【结论】考虑渗流驱动力精细化计算方法对于大型、特大型岸坡稳定性计算具有实际工程意义。
【Objective】 The correction transfer coefficient method for slope stability considering seepage driving force is proposed. 【Method】 The calculation method of seepage driving force in the bank of the Three Gorges Reservoir in the “Code for Design of Geological Hazard Prevention and Control Project of Chongqing Municipality” (DB50 5029-2004) (hereinafter referred to as “Specifications”) was analyzed. A physical model of seepage driven soil bank , Proposed a refinement calculation method of seepage driving force of bank slope, and corrected the transfer coefficient method of stability calculation of quasi-soild slope considering seepage driving force. 【Result】 The results of Liangshuijing landslide in the Three Gorges Reservoir area show that the stability coefficient of the “standard” method and the method of this paper are 1.061 and 1.074, respectively. The “standard” method is too conservative in calculating the driving force of seepage. 【Conclusion】 Considering the detailed calculation method of seepage driving force has practical engineering significance for the calculation of large and extra large bank slope stability.