Flood routing model incorporating intensive streambed infiltration

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• 作者：Liang Cheng ; ZongZhi Wang ; SiYi Hu ; YinTang Wang…
• 关键词：flood simulation ; flood forecasting ; flood routing ; streambed infiltration ; Muskingum ; Cunge method ; Haihe River Basin
• 刊名：Science China Earth Sciences
• 出版年：2015
• 出版时间：May 2015
• 年：2015
• 卷：58
• 期：5
• 页码：718-726
• 全文大小：953 KB
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• 作者单位：Liang Cheng (1)
  ZongZhi Wang (1)
  SiYi Hu (1)
  YinTang Wang (1)
  JuLiang Jin (2)
  YuLiang Zhou (2)
  
  1. State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Nanjing Hydraulic Research Institute, Nanjing, 210029, China
  2. School of Civil Engineering, Hefei University of Technology, Hefei, 230009, China
  
• 刊物主题：Earth Sciences, general;
• 出版者：Springer Berlin Heidelberg
• ISSN：1869-1897

文摘

Flood routing models are critical to flood forecasting and confluence calculations. In the streams that dry up and disconnect from groundwater, the streambed infiltration is intensive and has a significant effect on flood wave movement. Streambed infiltration should be considered in flood routing. A flood routing model incorporating intensive streambed infiltration is proposed. In the model a streambed infiltration simulation method based on soil infiltration theory is developed. In this method the Horton equation is used to calculate infiltration capacity. A trial-and-error method is developed to calculate infiltration rate and determine whether the flood wave can travel downstream. A formula is derived to calculate infiltration flow per unit length. The Muskingum-Cunge method with streambed infiltration flow as lateral outflow is used for flood routing. The proposed model is applied to the stream from the downstream of the Yuecheng Reservoir to the Caixiaozhuang Hydrometric Station in the Zhangwei River of the Haihe River Basin. Simulation results show that the accuracy of the model is high, and the infiltration simulation method can represent infiltration processes well. The proposed model is simple and practical for flood simulation and forecasting, and can be used in river confluence calculations in a rainfall-runoff model for arid and semiarid regions.