Changjiang Institute of Survey Planning Design and Research Wuhan 430010 China;
Bureau of Hydrology Changjiang Water Resource Commission Wuhan 430010 China;
State Key Laboratory''of Simulation and Regulation of Water Cycle in River Basin.China Institute of Water Resources and Hydropower Research Beijing 100038 ChinaDepartment of Geotechnical Engineering China Institute of Water Resources and Hydropower Research Beijing 100048 China;
Changjiang Institute of Survey Planning Design and Research Wuhan 430010 China;
State Key Laboratory of Eco-hydraulics in Northwest Arid Region Xi''an University of Technology'' Xi''an 710048 China;
Changjiang Survey Institute of MWR Wuhan 430011 China;
State Key Laboratory''of Simulation and Regulation of Water Cycle in River Basin.China Institute of Water Resources and Hydropower Research Beijing 100038 ChinaDepartment of Geotechnical Engineering China Institute of Water Resources and Hydropower Research Beijing 100048 China;
dam breach; back analysis; baige barrier lake; emergency response; downstream flood propagation;