库水位升降作用下填土岸坡稳定性的分析

库水位升降是诱发库岸滑坡的重要因素之一。将渗流场有限元计算与极限平衡分析结合起来,针对潘口库区水位升降对鳌鱼沟填土岸坡稳定性的影响进行分析。结果表明:该岸坡的安全系数随库水位的升降均呈现先减小后增大的变化规律,岸坡变形加剧主要可能发生在蓄水、泄水的初期,但水位升降过程中该岸坡仍将处于稳定状态。

Analysis of the Stability of the Filled Embankment Slopes under Reservoir Pool Level Fluctuations

Reservoir pool level fluctuation is considered as one of important factors that induced the reservoir landslides.The impact of the pool level fluctuation of Bokou Reservoir on the Aoyugou filled embankment slopes is analyzed be the combinations of seepage field finite element method（FEM）and limit equilibrium method.The results indicate：the safety factors on the embankment slopes are reduced initially and increased later under the pool level fluctuations.The large deformation of the embankment slopes occurred during the initial stage of pooling and discharging periods.A stable status can be found during the later stages of both operations of pooling and discharging.