Sedimentation issues of the Four Major Rivers Restoration Project in South Korea

IF 2.4 3区 环境科学与生态学 Q2 ENGINEERING, CIVIL Journal of Hydro-environment Research Pub Date : 2023-09-01 DOI:10.1016/j.jher.2023.08.001
Hyoseop Woo , Pierre Y. Julien , Byungman Yoon , Sung-Uk Choi
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Abstract

In 2009, South Korea started a large multi-purpose water project on its four major rivers. The main purposes of the Four Major Rivers Restoration Project (FMRRP), which are directly related to water itself, were: (1) securing water resources to combat water scarcity; (2) reducing flood risks by riverbed dredging and reinforcing levees; and (3) restoring the river's environmental functions. Despite socio-environmental opposition, the project was completed in 2011. This article reviews the sedimentation issues raised during and after the FMRRP regarding technological developments and the lessons learned from the project. A total of five sedimentation issues raised directly from the project are reviewed in this article: (1) riverbed dredging and sediment redeposition; (2) tributary headcut; (3) riverbed scour downstream of the movable weir structures; (4) sedimentation management schemes; and (5) a near-prototype river experiment facility. Each issue is addressed by identifying and analyzing field data, developing new numerical models, and testing at a large-scale experiment facility. From this project, we have found that a comprehensive numerical technique is required to predict the sediment issues as mentioned above in a watershed-scale riverwork.

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韩国四大江河恢复工程的沉积问题
2009年,韩国在四条主要河流上启动了一项大型多用途水利工程。与水本身直接相关的四大江修复项目的主要目的是:(1)确保水资源以应对缺水;(2) 通过疏浚河床和加固堤坝来降低洪水风险;(3)恢复河流的环境功能。尽管社会环境反对,该项目于2011年完成。本文回顾了FMRRP期间和之后提出的关于技术发展的沉降问题以及从该项目中吸取的教训。本文综述了该项目直接提出的五个泥沙问题:(1)河床疏浚和泥沙再沉积;(2) 支流截头;(3) 活动堰结构下游的河床冲刷;(4) 沉淀管理方案;和(5)一个接近原型的河流实验设施。每个问题都通过识别和分析现场数据、开发新的数值模型以及在大型实验设施中进行测试来解决。从该项目中,我们发现需要一种综合的数值技术来预测流域尺度河流工程中的上述泥沙问题。
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来源期刊
Journal of Hydro-environment Research
Journal of Hydro-environment Research ENGINEERING, CIVIL-ENVIRONMENTAL SCIENCES
CiteScore
5.80
自引率
0.00%
发文量
34
审稿时长
98 days
期刊介绍: The journal aims to provide an international platform for the dissemination of research and engineering applications related to water and hydraulic problems in the Asia-Pacific region. The journal provides a wide distribution at affordable subscription rate, as well as a rapid reviewing and publication time. The journal particularly encourages papers from young researchers. Papers that require extensive language editing, qualify for editorial assistance with American Journal Experts, a Language Editing Company that Elsevier recommends. Authors submitting to this journal are entitled to a 10% discount.
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