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详细介绍了锦屏水电站坝址区岸坡的地质结构特征和变形破坏模式,以雾化雨诱发边坡失稳的机理为基础,结合泄洪雾化区的雾化量级、范围,采用定性和定量方法重点分析了位于雾化区范围内边坡的稳定性状况,按岸坡稳定程度将雾化区分为6个区,提出了雾化区边坡可能的失稳模式。结果表明,两大规模变形破裂体所在的D、E区边坡在水库泄洪雾化的条件下稳定性较差且对工程施工的危害大。针对各区雨雾边坡的失稳模式和稳定性状况提出了相应的工程处理措施,为工程设计和施工提供了科学依据。
The geological structure characteristics and deformation failure modes of bank slope in Jinping hydropower station are introduced in detail. Based on the mechanism of slope instability caused by atomizing rain and by combining with the magnitude and range of atomization in the atomization area, Quantitative analysis focuses on the stability of slopes located in the area of the atomization zone. According to the stability of the slope, the atomization zone is divided into six zones, and the possible instability mode of the slope in the atomization zone is proposed. The results show that the slopes of D and E sections where the two large-scale deformed and fractured bodies are located are less stable and have a great impact on the construction of the project due to the flood discharge and atomization of the reservoir. Aiming at the instability mode and the stability condition of the rain-fog slope in each area, the corresponding engineering measures are put forward, which provides a scientific basis for engineering design and construction.