Discussion on failure modes of concrete dams and geometric parameters of dam break

Dam & Safety ›› 2022, Vol. 0 ›› Issue (3): 1-9.

Discussion on failure modes of concrete dams and geometric parameters of dam break

by YANG Yanlong, SHEN Haiyao and HUANG Wei

Large Dam Safety Supervision Center, National Energy Adminstration

Received:2021-08-24 Online:2022-06-10 Published:2022-08-26

混凝土坝破坏模式及溃口几何参数探讨

杨彦龙，沈海尧，黄维

国家能源局大坝安全监察中心

作者简介:杨彦龙（1986—），男，甘肃陇南人，高级工程师，主要从事大坝安全技术管理工作。

Abstract

Abstract: The calculation and analysis of dam break flood is an important basic work for dam risk assessment and emergency management. The size of dam break has a great impact on the calculation of dam break flood. At present, most research on the development of dam break is about earth rock dams, while the research on concrete dam break is less. So in the calculation of dam break flood, the geometric size of concrete dam break is usually assumed based on experience. According to the database of historical concrete dam break cases at home and abroad, combined with structural characteristics of concrete dams, the causes and failure modes of concrete dam break are counted and analyzed, and the general principle for estimating the size of concrete dam break is introduced, which provides a reference for determining the parameters of concrete dam break in flood calculation.

Key words: concrete dam, failure mode, parameters of dam break

摘要： 溃坝洪水计算分析是大坝风险评价及应急管理的一项重要基础工作，大坝溃口尺寸对溃坝洪水计算结果影响很大。目前大坝溃口发展研究以土石坝居多，混凝土坝相关研究较少，溃坝洪水计算中溃口几何尺寸通常根据经验假定。根据国内外混凝土坝历史溃决案例数据库，结合混凝土坝结构特点，统计分析了混凝土坝溃坝原因及破坏模式，介绍了混凝土坝溃口尺寸估算的一般原则，为溃坝洪水计算中溃口参数的确定提供参考。

关键词: 混凝土坝, 破坏模式, 溃口参数

CLC Number:

TV642

by YANG Yanlong, SHEN Haiyao and HUANG Wei. Discussion on failure modes of concrete dams and geometric parameters of dam break[J]. Dam & Safety, 2022, 0(3): 1-9.

杨彦龙, 沈海尧, 黄维. 混凝土坝破坏模式及溃口几何参数探讨[J]. 大坝与安全, 2022, 0(3): 1-9.

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