Breaches of the Baige Barrier Lake: Emergency response and dam breach flood

查看全文 作　　者：CAI [1]YaoJun;CHENG [2]HaiYun;WU [3,4]ShuaiFeng;YANG [1]QiGui;WANG [5]Lin;LUAN [6]YueSheng;CHEN [3,4]ZuYu

机构地区：[1]Changjiang Institute of Survey,Planning,Design and Research,Wuhan 430010,China;[2]Bureau of Hydrology,Changjiang Water Resource Commission,Wuhan 430010,China;[3]State Key Laboratory'of Simulation and Regulation of Water Cycle in River Basin.China Institute of Water Resources and Hydropower Research,Beijing 100038,China;[4]Department of Geotechnical Engineering,China Institute of Water Resources and Hydropower Research,Beijing 100048,China;[5]State Key Laboratory of Eco-hydraulics in Northwest Arid Region,Xi'an University of Technology',Xi'an 710048,China;[6]Changjiang Survey Institute of MWR,Wuhan 430011,China

出　　处：《Science China(Technological Sciences)》索引2020年第63卷第7期,共13页

基　　金：supported by the National Key R&D Program of China(Grant No. 2018YFC1508600)。 摘　　要：This paper documents the emergency response to the breaches of the Baige Barrier Lake. The lake was successively formed by landslides that occurred on October 10 and November 3, 2018 at the provincial border between Sichuan and Tibet in China. The barrier lake created by the '10.10' landslide breached on October 12 and triggered a flood with a peak discharge around 10000 m^3/s. The residual landslide barrier was enhanced by a second landslide on November 3, resulting in a higher barrier with larger flood potential. An overflow channel was excavated in the crest of the barrier to prompt the breach to be triggered at a lower water level. The second breach happened on November 12 with a measured peak discharge of 31000 m^3/s. Nearly 75000 people were evacuated before the two breaches. In order to prevent the downstream dams from possible over-topping, nearly 3.27×10~8 m^3 of the stored volume was released from the Liyuan reservoir 688 km downstream of Baige Barrier Lake. This paper presents the measured hydrographs and the back-analysis results for the '11.03' barrier lake. It is shown that the modern models of dam breach hydraulics can reasonably reproduce the barrier breach hydrographs;however, further studies are needed to define the key parameters which highly influence the calculated results. Knowledge acquired during the emergency response to the case can be shared with experts working on breaches of embankment dams and can be referenced to promote both the theory study and the engineering practice to mitigate the potential risks caused by this type of catastrophic events. 关键词：dam breach back analysis baige barrier lake emergency response downstream flood propagation

相关文献

参考文献（42）
引证文献（24）
耦合文献（317）

参考文献(42)

引证文献(24)

耦合文献(317)

互联网出版许可证新出网证(渝)字10号全国400电话 - 免长途话费

Breaches of the Baige Barrier Lake: Emergency response and dam breach flood

参考文献(42)

引证文献(24)

耦合文献(317)

用户提示