Computation of Hydraulic Characteristics of Flood Flow Downstream from the Reservoir with Dam Safety Scenarios in North Vietnam

10 pages•Published: September 20, 2018

Abstract

Using a reservoir is an effective solution to prevent lowland flooding and mitigate socio-economic damages. However, due to the high density of river network and the presence of reservoirs, dam safety assurance is becoming one of the most important mission in water resource management in Vietnam. Hydraulic characteristics of dam-break wave are necessary information to generate early warning plans for downstream area of reservoir. To aim this purpose, the Finite Volume Method with Godunov-type is considered to solve two-dimensional shallow water equations and develop a numerical model. In this study, the numerical model for dam-break simulation is suggested and verified through a comparison between calculated results and observed data of two reference tests. Very good agreement shows the effectiveness and accuracy of the proposed model. The Nam Chien reservoir in Vietnam has been chosen and the numerical model is applied to simulate flooding wave for the scenario of arch dam collapse. Alternative solutions are produced, such as: water depth, discharge hydrographs, arrival time, time to reach maximum water level; flooding map. The simulated result implies that this model is an indispensable tool for simulating dam-break scenarios.

Keyphrases: arch dam, flood propagation, numerical model

In: Goffredo La Loggia, Gabriele Freni, Valeria Puleo and Mauro De Marchis (editors). HIC 2018. 13th International Conference on Hydroinformatics, vol 3, pages 1113-1122.

Links:	https://easychair.org/publications/paper/cZKC
	https://doi.org/10.29007/7gg6

BibTeX entry

@inproceedings{HIC2018:Computation_Hydraulic_Characteristics_Flood,
  author    = {Thu Hien Thi Le and Viet Hung Ho},
  title     = {Computation of Hydraulic Characteristics of Flood Flow Downstream from the Reservoir with Dam Safety Scenarios in North Vietnam},
  booktitle = {HIC 2018. 13th International Conference on Hydroinformatics},
  editor    = {Goffredo La Loggia and Gabriele Freni and Valeria Puleo and Mauro De Marchis},
  series    = {EPiC Series in Engineering},
  volume    = {3},
  publisher = {EasyChair},
  bibsource = {EasyChair, https://easychair.org},
  issn      = {2516-2330},
  url       = {/publications/paper/cZKC},
  doi       = {10.29007/7gg6},
  pages     = {1113-1122},
  year      = {2018}}

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