Flood Wave Propagation in Jingjiang Reach with the Three Gorges Reservoir in Operation
- DOI
- 10.2991/iccte-16.2016.13How to use a DOI?
- Keywords
- kinematic wave, surge, celerity, flood travelling time
- Abstract
The Jingjiang River is the reach of Yangtze River just downside of the Three Gorges Reservoir (TGR), and most oftenly threatened by the flood. In this reach the natural flood normally routed as kinematic wave, but since TGR put into operation the outflow can be changed dramatically once the controlling valves was opening or closing, and the flood propagates as surge wave in a certain section. As it routed down and being attenuated, the surge gradually transformed into kinematic wave again. The celerity of surge was much faster than that of kinematics, hence the flood travelling time decreased significantly. Accurate prediction of the travelling time is a fundamental factor for effectively controlling flood, and deeper understanding of the flood motion pattern in Jingjiang reach is extremely important. Based on MIKE 11 model built for this reach, scenarios of flood process and propagation time were simulated as accounting for different reservoir regulation strategy. By analysing the results, it was found that the larger the leap to the outflow discharge, and/or the longer time the discharge lasted, a longer section favours for surge propagation and shorter flood routing time.
- Copyright
- © 2016, the Authors. Published by Atlantis Press.
- Open Access
- This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).
Cite this article
TY - CONF AU - Li Chen AU - Haiyun Cheng AU - Yinshan Xu PY - 2016/01 DA - 2016/01 TI - Flood Wave Propagation in Jingjiang Reach with the Three Gorges Reservoir in Operation BT - Proceedings of the 2016 International Conference on Civil, Transportation and Environment PB - Atlantis Press SP - 65 EP - 76 SN - 2352-5401 UR - https://doi.org/10.2991/iccte-16.2016.13 DO - 10.2991/iccte-16.2016.13 ID - Chen2016/01 ER -