基于传递系数法的岸坡稳定性分析——以某电站库区涉水边坡为例

Analysis and research of bank slope stability based on transfer coefficient method——Case of a waterfront slope in a hydropower station

为了评估某电站库区内天然岸坡的稳定性,在传统刚体极限平衡法基本理论上,采用更为先进的传递系数法,计算某工程区内两段典型涉水边坡在不同工况下的稳定性;结果表明,在枯水期,两段岸坡的稳定系数均大于1.15;在考虑不利运行时,岸坡安全系数低于1,说明边坡需要采取加固措施才能保持自身稳定。该成果可为有关部门设计合理的边坡治理措施提供参考和借鉴。

In order to evaluate the stability of the natural bank slope in the reservoir area of a power station,based on the basic theory of the traditional rigid body limit equilibrium method,a more advanced transfer coefficient method is used to calculate the typical wading slopes of two sections in a project area.The stability is shown as follows:Under the condition of dry season,the stability coefficients of the two banks are greater than 1.15;However,when the unfavorable operating conditions are considered,the safety factor of the bank slope object below 1,it shows that the slope needs to be strengthened to maintain its stability.The stability of the bank slope object is greatly affected by water and earthquake effects.The calculation results can provide reference and reference for the design of reasonable slope control measures by relevant departments in the later period,so as to ensure the safe operation of the power station.