中文摘要：

以工程地质条件详细调查为基础，采用宏观地质分析与极限平衡法、数值模拟法相结合的研究手段，分层次对乌东德水电站右岸引水洞进口边坡整体稳定和局部稳定性进行了系统研究。结果表明：乌东德水电站右岸引水洞进口边坡整体稳定性较好，三维离散元数值模拟结果显示，人工边坡变形以少量回弹变形为主，变形特征不突出。在分析边坡开挖后可能形成的块体边界条件基础上，提出了人工边坡可能出现的块体失稳模式，从块体稳定性影响因素分析人手，建立块体稳定性工程地质评价标准，对块体稳定性进行了宏观地质分析，并采用三维刚体极限平衡方法对可能产生的块体模型进行了计算分析，得到块体开挖后的稳定系数。结果表明，人工边坡可能出现的块体多处于基本稳定状态。综合整体稳定性和局部稳定性研究成果，提出人工边坡加固方案建议。研究成果为工程设计与施工可提供重要依据，并对类似工程提供可以借鉴的经验。

英文摘要：

Based on detailed study on engineering geological conditions, a combined research method of engineering geological analysis evaluation method, limit equilibrium method and numerical calculation method on global is applied to analyse the local stability of the slope at right inlet diversion tunnel of Wudongde Hydropower Station. The results show that global stability is well, 3D distinct element simulation results show that, artificial slope deformation dominated by a small amount of rebound deformation and deformation characteristics without highlighting. Based on the boundary condition analysis of block may be formed after excavation, block instability mode was proposed. Starting with block stability influencing factors, block stability engineering geological evaluation standards has been established. Block stability was evaluated by these standard, 3D rigid limit equilibrium method was used to analyze the stability of the potential failure block in inlet slope, results show that most block was basically stable. Based on global and local stability research result, reinforcement measures were put forward for the slope.