Steep and antithetic platy structure of rock mass and geomorphology of the longitudinal valley in the dam site area cause wide-range toppling deformation on the cross-strait slope.
对该水电站坝址区陡立反倾板状结构岩体而言，纵向河谷的地形特征，使坝址两岸边坡大范围发育倾倒变形。
Prospective problems are discussed in high CFRD built in narrow valley, the arching effect on dam's deformation and stress is analyzed and the corresponding engineering measure is proposed.
分析了狭窄河谷的拱效应对大坝的变形和应力的影响，建议了相应的工程措施。
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