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相关概念视频

Conservation of Mass in Moving, Nondeforming Control Volume01:14

Conservation of Mass in Moving, Nondeforming Control Volume

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Stormwater detention basins are essential in managing runoff during heavy rainfall, particularly in urban areas where impervious surfaces increase the risk of flooding. Understanding the conservation of mass in these systems allows engineers to optimize basin performance, balancing inflow, outflow, and water storage.
In the context of a detention basin, the conservation of mass states that the total mass of water entering the basin must equal the mass leaving the basin plus any accumulation of...
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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: Design of an Irrigation Channel01:27

Design Example: Design of an Irrigation Channel

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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...
129
Design Example: Creating a Hydraulic Model of a Dam Spillway01:21

Design Example: Creating a Hydraulic Model of a Dam Spillway

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Scaled hydraulic models of dam spillways provide a practical way to replicate and study the intricate flow dynamics of these structures. Often built to a 1:15 ratio, these models allow for observing critical water behavior, such as velocity distribution, flow patterns, and energy dissipation.
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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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Design Example: Alignment of a Road Line Using GIS01:17

Design Example: Alignment of a Road Line Using GIS

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The alignment of a road line using Geographic Information Systems (GIS) is a critical process in civil engineering, combining advanced technology with practical decision-making. This methodology begins with the collection of geospatial data, including information on land cover, geomorphology, drainage patterns, slope, and contour details. Such data is typically acquired through satellite imagery and GIS tools, offering a comprehensive understanding of the terrain.Once the data is gathered, it...
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Updated: Jul 16, 2025

Vegetated Treatment Systems for Removing Contaminants Associated with Surface Water Toxicity in Agriculture and Urban Runoff
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开发多种证据来降低排水与地表面积比率,以有效地使用生物保留来控制风暴水的尺寸.

Thomas P O'Connor1

  • 1Environmental Engineer, United States Environmental Protection Agency, Stormwater Management Branch, 2890 Woodbridge Ave. (MS-104), Edison, NJ 08817.

Journal of sustainable water in the built environment
|September 13, 2023
PubMed
概括
此摘要是机器生成的。

较小的生物保留装置促进了更健康的植被生长和更好的雨水透. 低尺寸的控制适用于旨在获得更绿色道路权和改善环境质量的市政当局.

关键词:
生物保养 生物保养 生物保养建筑材料成本 建筑材料成本设计设计设计设计设计设计.绿色基础设施 (GI)风暴水的风暴水是什么意思

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Vegetated Treatment Systems for Removing Contaminants Associated with Surface Water Toxicity in Agriculture and Urban Runoff
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Design and Construction of an Urban Runoff Research Facility
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科学领域:

  • 环境工程 环境工程
  • 城市水文学 城市水文学
  • 园艺科学 园艺科学

背景情况:

  • 生物保留装置对于管理雨水下水流量至关重要.
  • 定位生物保留雨水控制器的尺寸涉及到平衡多个设计目标.
  • 以前的研究还没有完全阐明单位尺寸对植被健康和性能的影响.

研究的目的:

  • 为了评估排水与地表排水的比率,用于测量生物保留雨水控制器的尺寸.
  • 评估生物保留单元大小和面积比对植被生长和土壤状况的影响.
  • 确定生物保护区的最佳尺寸,优先考虑植被健康和雨水透.

主要方法:

  • 构建和仪器仪表的不同尺寸和尺寸比的液压隔离生物保温装置.
  • 使用水含量反射计 (WCR) 和热敏度计监测土壤水分含量.
  • 进行了植被调查,并分析了有机物和含量的种植基.

主要成果:

  • 较小的生物保留单位 (较高的流域与地表面积比率) 由于更频繁的根区和,表现出优越的灌木生长.
  • 较大单位的植物,特别是远离入口的植物,通常仅依赖于直接降雨,这表明雨水控制体积的不足利用.
  • 较小的单位显示有机物和的积累较大,这表明污染物保留能力更强.

结论:

  • 低尺寸的生物保留控制可以有效地促进健康的植被,并实现雨水透.
  • 市政当局可以利用较小的优先权进行生物保护,从而有助于雨水管理和其他环境效益.
  • 分布式生物保留系统,捕捉频繁的降雨事件,应纳入市政雨水管理计划.