摘要
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 of arch abutment,concrete plug,faults and alteration zone,a typical elevation section of a high arch dam project is simulated through geomechanics plane model test.And the failure mechanism and failure pattern of the arc dam abutment after applying the concrete plug is figured out corresponding to the overload method.At the same time,we built finite element plane models which included unreinforced plan and reinforcement to compare and complete the geomechanics plane model test.The results show that the arch thrust is transferred into the deep mountain with hard rock after applying the concrete plug on the abutments.It is obvious that the overload ability,anti-sliding stability and deformation stability of the arc dam are improved.It shows that applying concrete plug to reinforce the abutment is feasible.This study can be referred by other projects.
出处
《水电能源科学》
北大核心
2016年第5期132-136,共5页
Water Resources and Power
基金
国家自然科学基金项目(51379139
51409179)
