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[1]HAN Jianqiao,DUAN Wenzhong.Influence of Bridge Building on River Flood Control in Narrow Reaches—A Case Study of Xianyang Reaches in Weihe River[J].Research of Soil and Water Conservation,2017,24(06):388-391.

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Influence of Bridge Building on River Flood Control in Narrow Reaches—A Case Study of Xianyang Reaches in Weihe River

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 24 Number of periods: 2017 06 Page number: 388-391 Column: Public date: 2017-11-24

Title:: Influence of Bridge Building on River Flood Control in Narrow Reaches—A Case Study of Xianyang Reaches in Weihe River

Author(s):: HAN Jianqiao^1,2, DUAN Wenzhong³; 1. Institute of Soil and Water Conservation, Northwest A & F University, Yangling, Shaanxi 712100, China;
2. Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi 712100, China;
3. Upper and Middle Yellow River Bureau, Yellow River Conservancy Commission, Ministry of Water Resources, Xi’an 710021, China

Keywords:: flood control; narrow reaches; bridge construction; numerical simulation

CLC:: TV131.4

DOI:: -

Abstract:: The bottle-neck reaches is the narrow part of the river. In the bottle-neck reaches, the flood carrying capacity is relatively weak and the bridges built here threaten to the flood control safety. Taking Weihe Bridge of Longhai railway in Xianyang, the influence of bridge building on the flood control safety is studied. The results show that coexistence of 4 bridges leads to the maximum water level increase during the construction period. The project with maximum dredging volume leads to the increase of flow area and the maximum water level decrease. After Project 1, the water level decreases during the 300 year return period, 100 year return period and 5 year return period are 0.9 m, 0.9 m and 0.6 m, respectively. The bridges built in the bottle-neck reaches should combine the dredging projects to increase the flood carrying width and flow area and increase the flood carrying capacity.

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