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为真实地模拟拱坝拱端、置换洞、断层和蚀变带之间的相互作用,通过建立地质力学平面模型模拟某高拱坝工程的典型高程断面,采用超载法研究坝肩经混凝土置换洞塞加固处理后的破坏规律和破坏形态,同时建立了未加固方案和加固方案的有限元模型,对模型试验进行补充和对比分析。结果表明,左、右坝肩经加固处理后,坝肩拱推力向山体深部坚硬岩体传递,大坝的超载能力明显提高,坝肩的抗滑稳定性和变形稳定性增强,说明左、右坝肩采用混凝土置换洞塞的加固措施切实可行,研究成果可供类似工程参考。
In order to truly simulate the interaction between arch dam arch, replacement hole, fault and alteration zone, the typical elevation section of a high arch dam project is simulated by establishing a geomechanical plane model, After the reinforcement and failure modes were established, the finite element model of the unconfined solution and the reinforcement scheme was established and the model tests were supplemented and compared. The results show that after the reinforcement of the left and right abutments, the arch abutment thrust is transmitted to the deep hard rock mass in the mountainous area, the overloading capacity of the dam is obviously improved, and the anti-sliding stability and deformation stability of the abutment are enhanced. Reinforced concrete dam replacement with concrete dam reinforcement measures feasible, the research results for similar projects for reference.