Hydraulics & Waterways

Oral

398085 - Flow Discharge from Dam Failure Induced Unsteady Flow

Tuesday, June 5
10:30 AM - 12:00 PM
Location: Greenway CD
Co-Authors: Lei Liu, CEEM – University of Arizona

A series of experiments were conducted to investigate flood flow generated by the failure of landslide earthen dams due to overtopping. This study aimed to quantify the effects of inflow discharge, downstream slope, dam crest width, dam height, and dam material on the dam breach flow. High-speed camera images were used to determine the profiles of the dam body and the outflow discharge during the failure processes. Results indicate that the water level in the upstream reservoir and the erosion of dam body are the dominant factors affecting the downstream flood flow. A physically-based model was established to calculate the peak discharge and the time to the peak discharge. Both analytical and numerical solutions were derived. The modelling results were verified using data from this and several other laboratory experiments. The agreement between the calculated and measured data indicates the applicability of the proposed model for predicting the peak discharge of overtopping induced dam break flow.

Jennifer Duan

Associate Professor
University of Arizona

Professor Jennifer Duan, Assocate Professor, in the Department of Civil Engineering and Engineering Mechanics, at the University of Arizona. She is the Delbert Lewis Distingusihed Professor in CEEM, and also director for graduate program. She hold PHD degree from University of Mississippi, MS degree from Tsinghua Univ, and BS degree from Wuhan Univ. She has been in water reosurce engineering research for over 30 years, with 100 more paper publications in peer-reviewed journals and proceedings. She is a NSF Career Award Winner, and has been PIs in many federal, state, and loacl funded research projects.

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