水利学报2017，Vol.48Issue(10)：1157-1166,10.DOI:10.13243/j.cnki.slxb.20170124
梯级水库群控制梯级极端工况泄洪安全分析
Safety analysis of flood discharge structures of the control cascade reservoir under extreme operating condition
摘要
Abstract
The risk of the whole cascade reservoirs of the earth rockfill dams under extreme operating condition is rely on the security of the control cascade reservoir.Such earth rockfifl dam with extra height is classified into Class Ⅰ and Class Ⅱ dam based on the existing Chinese dam classification systems recently,but which one should design the unusual discharge facilities to reduce the risk level of the dams during the extreme operating condition is blank.Based on the theoretical framework of single DB-IWHR model,a cascade dam break flood simulation software was firstly established.Considering the extreme operating condi tion (super standard flood combine with discharge gate failure caused by earthquake)and the discharge capacity,the paper simulated the dam break discharge,flood routing and water level of the control cascade reservoir to evaluate the safety of the whole cascade dams.The simulated results show that,for the layout ‘Class Ⅰ dam-earth rockfill dams-Class Ⅰ',the unusual discharge facility should be considered in the design of the up Class Ⅰ dam.For the layout ‘Class 11 dam-earth rockfill dams-Class Ⅰ dam',by adding unusual discharge facility or improve the discharge capacity for the Class Ⅰ dam,it can lower the water level of the reservoir obviously after the break of the up Class Ⅱ dam which vacate larger storage capacity to deal with this break discharge.This analysis and discharge capacity improvement method not only can be used as an important tool to evaluate cascade dams risk under extreme operating condition,but also provide suopports for the design criteria of the unusual discharge structures for extra height dam.关键词
水库群/控制梯级/泄水建筑物/连溃/超标准洪水Key words
cascade reservoirs/control cascade reservoir/discharge structure/cascade dam break/super standard flood分类
建筑与水利引用本文复制引用
郭新蕾,周兴波,夏庆福,付辉,李邵军..梯级水库群控制梯级极端工况泄洪安全分析[J].水利学报,2017,48(10):1157-1166,10.基金项目
国家重点基础研究发展规划“973”项目(2013CB036405) （2013CB036405）
国家自然科学基金项目(51679262) （51679262）
国家重点研发计划课题(2016YFC0401706) （2016YFC0401706）
