Up or Out?—Economic-Engineering Theory of Flood Levee Height and Setback
Up or Out?—Economic-Engineering Theory of Flood Levee Height and Setback
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涨还是退？——防洪堤高退的经济工程理论
DOI：
10.1061/(asce)0733-9496(2009)135:2(90
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发表时间：
2009
影响因子：
3.1
通讯作者：
J. Lund
中科院分区：
文献类型：
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作者：
T. Zhu;J. Lund
堤身回缩位置和回缩高度是防洪堤系统设计和改造中的重要问题。本文导出了原防洪堤和改建防洪堤的退高最优折衷的经济工程理论，论证了退高、高度、费用和风险的相互关系，以及经济最优设计。这些分析假设固定洪水水文和静态比率之间的损坏财产价值，单位建设成本和土地价格。堤防退高的经济权衡主要取决于经济成本效益和水力参数，而仅间接取决于洪水频率和经济损失参数。在本文中推导出的重新设计规则表明，现有的堤坝应提高或移动，以应对条件的变化条件。数值例子说明了结果。本文阐述了经济防洪堤系统规划和政策的几个思想和理论，而不是提供直接的设计实践指导。
Levee setback location and height are important issues in flood levee system design and modification. This paper derives an economic-engineering theory of the optimal trade-off of levee setback for height both for original and redesigned flood levees, demon- strating the interconnection of levee setback, height, costs and risks, and economically optimal design. These analyses assume stationary flood hydrology and static ratios among damageable property value, unit construction cost, and land price. The economic trade-off of levee setback for height depends on economic cost and benefit and hydraulic parameters, and only indirectly on flood frequency and economic damage parameters. The redesign rules derived in this paper indicate conditions where existing levees should be raised or moved in response to changes in conditions. Numerical examples illustrate the results. This paper demonstrates several ideas and theory for economic flood levee system planning and policy rather than providing guidelines for direct design practice.
DOI：
--
发表时间：
2007
期刊：
--
影响因子：
--
作者：
国土交通省国土技術政策総合研究所
通讯作者：
国土交通省国土技術政策総合研究所