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首页> 外文会议>World Environmental and Water Resources Congress >Sand Dam Hydraulics, Hydrology, and GIS Modeling Simulation in Predicting River Behavior under Multiple Weather Conditions to Solve Water Shortage Problem
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Sand Dam Hydraulics, Hydrology, and GIS Modeling Simulation in Predicting River Behavior under Multiple Weather Conditions to Solve Water Shortage Problem

机译：砂坝液压，水文和GIS建模仿真在预测多天气条件下的河流行为下解决水资源短缺问题

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摘要

Surface water would easily be lost in stream flow and evaporation, especially in semi-arid and arid climates. Therefore, sand dams provide an effective and sustainable water access strategy by capturing surface water for an economic way of storage. To prevent losses from runoff, building sand dams can help solve water shortage problems during dry seasons. This work focuses on evaluating the behavior of the river system with and without sand dams under high, medium, and low stream flow conditions. The study was conducted by setting up an HEC-RAS model and using ArcGIS to support the spatial calculation of areas and watershed volumes needed for the simulation. Digital Elevation Models (DEMs) are used to provide the cross section profiles of the watershed and the storage area evaluation. The water surface elevation of the model is mainly affected by the discharge of the Tippecanoe River at Winamac, Indiana, and by the groundwater flow and the storage areas interaction. Moreover, using a HEC-RAS model, in this paper, a comprehensive analysis and discussions are provided which give a better understanding of the behavior of the complicated river systems. Calibration was also conducted to provide a more precise model environment for the study. This work found that sand dams can help control the flow peak during low and medium stream flow and are able to store water. However, under a high flow condition, sand dams are not capable of handling stormwater because of overtopping. These findings relate directly to the size and height of the dams design. Moreover, roughness coefficient, vegetation, groundwater inflow and storage area also indirectly influence the storage capability of the sand dams. Therefore, this work found that constructing sand dams can help delay the time of flow peaks, and thus, providing better water storage in wet seasons that can be useful later during dry seasons.
机译：表面水很容易丢失流动流动和蒸发，特别是在半干旱和干旱气候中。因此，砂水坝通过捕获地表水以获得经济储存方式提供有效和可持续的水访问策略。为防止径流损失，建筑砂水坝可以帮助解决干燥季节的缺水问题。这项工作侧重于评估高中，介质和低流动条件下的河流系统的行为和没有砂岩。该研究是通过建立HEC-RAS模型并使用ArcGIS来支持模拟所需区域和流域体积的空间计算。数字高度模型（DEMS）用于提供流域的横截面轮廓和存储区评估。该模型的水面升高主要受到Winamac，印第安纳州的蒂普·纳泊河流和地下水流量和存储区域相互作用的影响。此外，在本文中使用HEC-RAS模型，提供了全面的分析和讨论，这使得更好地了解复杂的河流系统的行为。还进行了校准以提供更精确的研究模型环境。这项工作发现，砂坝可以帮助在低中和中流流期间控制流动峰值，并能够储存水。然而，在高流量条件下，由于初始化，砂坝能够处理雨水。这些发现直接涉及水坝设计的尺寸和高度。此外，粗糙度系数，植被，地下水流入和储存区域也间接影响砂坝的储存能力。因此，这项工作发现，构造砂坝可以有助于延迟流动峰的时间，从而提供更好的潮湿季节，在旱季期间可以有用。

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