谷幅变形对拱坝工程安全影响案例分析及有关启示  

Case Study and Reflections on Arch Dams Affected by Valley Deformation

作　　者：武明鑫[1] 赵全胜[1] WU Mingxin;ZHAO Quansheng(China Renewable Energy Engineering Institute,Beijing 100120,China)

机构地区：[1]水电水利规划设计总院,北京100120

出　　处：《水力发电》2021年第1期68-72,89,共6页Water Power

摘　　要：为充分认识谷幅变形对拱坝的安全影响,收集了国内外受到谷幅变形收缩影响的拱坝案例,分析并讨论了拱坝的运行情况和应对谷幅变形的措施。综合这些工程案例,建议高拱坝工程建设应尽早开展谷幅变形相关监测,对出现的谷幅变形需开展相关机理研究,同时应结合大坝安全监测资料,采用多种方法分析谷幅变形对拱坝的安全影响,并可采取提高水库最低运行水位等措施改善大坝受力状态,避免谷幅变形对拱坝造成损伤。A case study is conducted on the arch dams affected by the valley deformation at home and aboard.The operation conditions and engineering measures are particularly introduced for these projects.This study is helpful to strengthen the understanding of the effect of the valley deformation on the arch dam and several suggestions are put forward in the paper.It is recommended that the safety monitoring about the valley deformation should be carried out as early as possible in the construction of arch dams.The mechanism of the valley deformation shall be analyzed.Meanwhile,various methods should be used to analyze the effect of the valley deformation on arch dam in combination with monitoring data.It is also suggested that an operational level limit of the reservoir may be set to improve the performance and avoid damage of the arch dam structure.

关 键 词：拱坝 谷幅变形 安全影响 应对措施 启示建议 

分 类 号：TV642.4[水利工程—水利水电工程]