杨房沟水电站拱坝坝肩抗力体稳定性分析

Stability analysis of arch dam abutment resisting mass in Yangfang hydropower station

杨房沟水电站拱坝两岸Ⅳ、Ⅴ级结构面发育,特别是平行拱轴力的侧向结构面连通性较好,对坝肩抗滑稳定不利。本文分析两岸坝肩抗力体内可能组合块体,研究块体结构面的力学参数,查明其连通率,评价对坝肩抗力体的稳定影响。

The IV,V level structural plane on both sides of the arch dam in Yangfang hydropower station,especially the lateral structural plane of parallel arch axis force has good connectivity,which is harmful to anti-slide stability of dam abutment.In this paper,possible combination of blocks in dam abutment resisting mass is analysed,mechanical parameters of the block structural plane is studied,the connecting rate is investigated and its influence on dam abutment resisting mass is evaluated.