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相关概念视频

Design Example: Analyzing Capacity Contours for Flood Risk Assessment01:17

Design Example: Analyzing Capacity Contours for Flood Risk Assessment

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Flood risk assessment involves careful planning and analysis to ensure the safety of communities near water retention structures. Capacity contours are a vital tool in this process, as they illustrate the potential spread of water at specific levels in a given area. In the context of building a bund across a small valley, these contours play a critical role in evaluating the safety of nearby residential areas.In this example, the bund is intended to store stormwater in the valley. The engineers...
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Design Example: Maintaining Level of an Embankment01:19

Design Example: Maintaining Level of an Embankment

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Constructing a roadway embankment over uneven terrain requires precise leveling to ensure stability and proper drainage. Surveyors use a leveling instrument and staff to calculate ground elevations and determine the required fill material at each point along the embankment alignment.The process begins by positioning a leveling instrument near a benchmark with a known elevation. A backsight reading establishes the instrument height, which serves as a reference for subsequent measurements. A...
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Water plays a significant role in the life cycle of plants. However, insufficient or excess of water can be detrimental and pose a serious threat to plants.
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Design Example: Design of an Irrigation Channel01:27

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Trapezoidal channels are widely used in irrigation systems due to their cost-effectiveness and efficiency in conveying water. Trapezoidal channels feature a flat bottom and sloping sides, making them stable and easier to construct compared to other shapes. The bottom width and side slope ratio are determined based on the required flow capacity and site conditions. The side slope is kept gentle for unlined channels to prevent soil erosion.Hydraulic parameters in channel design include the flow...
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Typical Model Studies01:30

Typical Model Studies

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Fluid mechanics model studies often utilize scaled-down systems to predict fluid behavior in full-scale environments, such as river flows, dam spillways, and structures interacting with open surfaces. Maintaining Froude number similarity in river models is crucial, as it replicates surface flow features like wave patterns and velocities.
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Community Based Intervention01:30

Community Based Intervention

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Community-based interventions in mental health represent a paradigm shift from institution-centered care to treatments embedded within the fabric of local communities. By prioritizing inclusion and leveraging existing societal structures, this approach fosters a supportive environment conducive to addressing mental health challenges while promoting individual dignity and agency.
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Watershed Planning within a Quantitative Scenario Analysis Framework
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社区规模的非结构性洪水减缓优化:中锡达的案例研究.

Enes Yildirim1, Yazeed Alabbad2, Ibrahim Demir3

  • 1Iowa Department of Natural Resources, Iowa City, USA.

Journal of environmental management
|September 22, 2023
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概括
此摘要是机器生成的。

爱荷华州的洪水风险很高,雪梨布和雪梨急流需要显著的缓解. 干式防洪是研究社区中最具成本效益的解决方案.

关键词:
进行成本效益分析.洪水 洪水 洪水 洪水缓解缓解缓解的方法优化优化 优化优化

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科学领域:

  • 环境科学 环境科学
  • 城市规划 城市规划
  • 土木工程 土木工程是指土木工程.

背景情况:

  • 洪水是爱荷华州的主要自然灾害,由于土地使用变化和降水变化,造成数十亿美元的损失.
  • 洪水频率和规模的增加需要强有力的缓解策略,以减少未来的经济损失.

研究的目的:

  • 为了对爱荷华州的Cedar Falls,Cedar Rapids和Waterloo进行全面的洪水减缓评估.
  • 确定具有成本效益的缓解策略,并优先考虑投资,以最大限度地提高社区利益.

主要方法:

  • 利用财产数据,洪水淹没地图,缓解成本和深度损害功能进行分析.
  • 进行了成本效益分析 (BCA) 和基于气候数据的评估.
  • 分析了缓解预算,以确定避免的损失和效益成本比率 (BCR).

主要成果:

  • 沃特卢在200年洪水事件以下的影响最小;雪梨布和雪梨急流是高度脆弱的.
  • 干式防洪已成为所有社区最可行的缓解选择.
  • 升高的结构增加了各种气候预测中的缓解选择.

结论:

  • 调查结果为社区决策者提供了关键的见解,以优先考虑具有成本效益的洪水减缓.
  • 建议旨在指导战略规划,以尽量减少爱荷华州脆弱地区的洪水影响.