水利学报Issue(6)：640-649,10.DOI:10.13243/j.cnki.slxb.20150251
特高坝及其梯级水库群设计安全标准研究Ⅱ：高土石坝坝坡稳定安全系数标准
Evaluations on the safety design standards for dams with extra height or cascade impacts. Part II:Slope stability of embankment dams
摘要
Abstract
The existing Chinese embankment dam design code specifies an allowable factor of safety of 1.5 in slope stability evaluations, which can be compared to the reliability index of 4.2, also specified by the dam design code. However, the code emphasizes that this criterion is only applicable to dams with heights less than 200 m. Using the theory of“ratio of safety margin”proposed by the authors, and applying case studies for a number of dams higher than 200 m currently being constructed or planned in China , it has been found that the new criteria of factors of safety can be 1.7 and 1.6 for dams with heights of over 250 m and 200-250 m respectively. They are at the same level of safety control to 4.7 and 4.45,their respec⁃tive allowable reliability indices as proposed in Part I. This finding may be useful in code revision works.关键词
相对安全率/边坡稳定/高土石坝/可靠指标/安全系数/风险控制Key words
ratio safety margin/height embankment dam/reliability index/safety factor分类
建筑与水利引用本文复制引用
杜效鹄,李斌,陈祖煜,王玉杰,孙平..特高坝及其梯级水库群设计安全标准研究Ⅱ：高土石坝坝坡稳定安全系数标准[J].水利学报,2015,(6):640-649,10.基金项目
国家重点基础研究发展计划（973计划） （）
