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为评价花山拱坝右坝肩溶洞对坝体及坝肩的影响,采用三维有限元方法,对不同工况不同方案下坝体和坝肩岩体应力变形进行计算分析,并利用超载法分析了不同方案下的坝肩稳定状况.结果表明:溶洞的存在对坝体的应力变形及坝肩的整体稳定性影响较小,对坝肩岩体应力变形的影响也仅限于溶洞附近区域;溶洞回填处理后,其附近的变形得到有效控制.综合来看,溶洞的存在对整个工程影响较小,经过回填处理后,整个工程的安全性是有保障的.
In order to evaluate the influence of the right abutment caverns on the dam body and the abutment, the three-dimensional finite element method was used to calculate and analyze the stress and deformation of the dam body and abutment under different working conditions and the overloading method The results show that the existence of cave has little effect on the stress and deformation of the dam and the integral stability of the abutment, and the influence on the stress and deformation of the dam abutment is limited to the area near the cave. After treatment, the deformation in the vicinity is effectively controlled.Overall, the existence of cave has little effect on the whole project, and the safety of the whole project is guaranteed after the backfill treatment.