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Author:

Yang, Weichao (Yang, Weichao.) | Zheng, Chuanxing (Zheng, Chuanxing.) | Jiang, Xuelian (Jiang, Xuelian.) | Wang, Hao (Wang, Hao.) | Lian, Jijian (Lian, Jijian.) | Hu, De (Hu, De.) | Zheng, Airong (Zheng, Airong.)

Indexed by:

EI Scopus SCIE

Abstract:

Urban flood is a serious challenge that increasingly affects the residents. Simulation of urban flood is becoming increasingly relevant in the world. However, how to improve the simulation accuracy is still a challenge in the field. This paper is developed to propose a novel model of SWTM (SWMM model and TELEMAC-2D model) coupling D8 flow direction and backflow effect, improving the simulation accuracy of inundation area, inun-dation depth and inundation duration. The model is organized into three parts: one-dimensional pipe network model establishment, two-dimensional surface inundation model, and coupling model SWTM construction. The D8 algorithm is introduced to subcatchment division. The linear interpolation in DEM is applied to improve the accuracy of D8 algorithm. It enables more accurate simulation of rainfall runoff processes using the path weighted average method for the calculation of feature width and feature slope in watershed. The overflow and backflow effect of inspection wells are both considered to simulate the flood inundation in the two-dimensional surface inundation model, which can obtain the maximum inundation depth and inundation area more accu-rately. In the coupled model, the overflow and backflow process of inspection wells are used as the input con-dition of the two-dimensional model to simulate the flooding process. The new model is applied to rainstorm waterlogging in Fangzhuang area, Beijing. It shows that SWTM model can simulate the changes of inundation range, inundation depth and inundation duration more accurately comparing with the traditional model.

Keyword:

Flooding process Subcatchment division Coupled model Simulation accuracy

Author Community:

  • [ 1 ] [Yang, Weichao]Tianjin Chengjian Univ, Tianjin Key Lab Soft Soil Characterist & Engn Envi, Tianjin 300384, Peoples R China
  • [ 2 ] [Zheng, Chuanxing]Tianjin Chengjian Univ, Tianjin Key Lab Soft Soil Characterist & Engn Envi, Tianjin 300384, Peoples R China
  • [ 3 ] [Jiang, Xuelian]Tianjin Chengjian Univ, Tianjin Key Lab Soft Soil Characterist & Engn Envi, Tianjin 300384, Peoples R China
  • [ 4 ] [Hu, De]Tianjin Chengjian Univ, Tianjin Key Lab Soft Soil Characterist & Engn Envi, Tianjin 300384, Peoples R China
  • [ 5 ] [Yang, Weichao]Tianjin Univ, State Key Lab Hydraul Engn Simulat & Safety, Tianjin 300350, Peoples R China
  • [ 6 ] [Lian, Jijian]Tianjin Univ, State Key Lab Hydraul Engn Simulat & Safety, Tianjin 300350, Peoples R China
  • [ 7 ] [Wang, Hao]Beijing Univ Technol, Beijing 100124, Peoples R China
  • [ 8 ] [Zheng, Airong]CCCC Tianjin Port Engn Inst Ltd, Minist Commun, Key Lab Geotech Engn, Key Lab Geotech Engn Tianjin,PRC, Tianjin 300222, Peoples R China
  • [ 9 ] [Zheng, Airong]CCCC First Harbor Engn Co Ltd, Tianjin 300461, Peoples R China

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Source :

JOURNAL OF HYDROLOGY

ISSN: 0022-1694

Year: 2023

Volume: 621

6 . 4 0 0

JCR@2022

ESI Discipline: ENGINEERING;

ESI HC Threshold:19

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 19

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 2

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