【摘要】 向家坝水电站大坝坝基具有深浅层滑移破坏的地质背景 ,采用以刚体极限平衡法为主并结合多种数值分析方法 ,对深浅层抗滑稳定及加固处理方案进行了详细的比较 ,确定采用“扩大坝基 +坝踵齿槽 +硐塞 +深孔固结灌浆”综合处理方案。更多还原

【Abstract】 There are several shallow-lying soft interlayers and deep-lying soft interlayers in the foundation rock of Xiangjiaba gravity dam. The stability against sliding of foundation rock is computated by means of rigid-body limit equilibrium analysis as the principal method, and by diversified numerical analysis method as supplementary, and several strengthening treatment schemes are compared. The result shows that a comprehensive treatment scheme (i.e. extending the area of dam foundation, building notched grooves at the dam heel, filling the cavities and performing deep-hole consilidation grouting) is available.更多还原