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首页> 外文会议>World environmental and water resources congress >Integrating fluvial geomorphology and two-dimensional hydraulic and sediment transport modeling to support sustainable design of large river and floodplain improvements: The Trinity River Corridor Project, Dallas, Texas, USA
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Integrating fluvial geomorphology and two-dimensional hydraulic and sediment transport modeling to support sustainable design of large river and floodplain improvements: The Trinity River Corridor Project, Dallas, Texas, USA

机译：将河流地貌学与二维水力和泥沙输送模型相结合，以支持大河和洪泛区改进的可持续设计：美国德克萨斯州达拉斯的三位一体河走廊项目

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The Trinity River Corridor Project in Dallas, Texas will realign and naturalize eightmiles of the Trinity River channel and create a wide variety of recreational andhabitat features on the floodplain within the boundaries of the Dallas floodway. Majorflood control projects in the 1920s and 1950s relocated, straightened, and channelizedthe river, and regular mowing on the floodplain has maintained homogenousconditions with limited habitat value. Primary river naturalization elements of theproject include restoration of channel meanders, creation of more natural channelgeometry, integration of natural geologic controls into the channel profile, andcreation of an oxbow lake. Floodplain improvements include creation of wetlands,lakes, recreational features such as trails and playing fields, and establishment ofmore natural vegetation assemblages. This suite of channel and floodplainimprovements will create more complex hydraulics and sediment transportcharacteristics that will strongly influence the operation and maintenance of theProject area, and therefore the overall sustainability of the Project. Therefore, thedesign of channel and floodplain features has been guided by detailed analysis ofhistorical geomorphology of the Project site and the region, and two-dimensionalhydraulic and sediment transport modeling of the proposed channel and floodplaindesign. We present results from the integrated fluvial geomorphology and twodimensionalhydraulic and sediment transport modeling based design processintroduced in Tompkins et al (2008) and describe how these results, which includedvelocity and shear stress distribution and sediment deposition patterns, were used todevelop and refine channel alignment, geometry, and bank treatment designs as wellas configuration and design of floodplain features.
机译：德克萨斯州达拉斯的三位一体河走廊项目将调整并归化八个 三位一体河道的英里，并创造了各种各样的娱乐和 达拉斯河道边界内的漫滩上的栖息地特征。主要的 1920年代和1950年代的防洪工程搬迁，拉直并渠化 河流，并定期在洪泛区割草，保持了均质 栖息地价值有限的条件。主要河道归化要素 该项目包括恢复河道曲折，创建更自然的河道 几何形状，将自然地质控制集成到通道剖面中，以及 牛湖的创建。洪泛区的改善包括湿地的建立， 湖泊，休闲小径和运动场等特色设施，以及 更天然的植被组合。这套渠道和洪泛区 改进将产生更加复杂的水力和泥沙输送 会严重影响设备运行和维护的特性 项目区域，因此项目的整体可持续性。因此， 航道和洪泛区特征的设计已通过以下方面的详细分析为指导 项目场地和区域的历史地貌，以及二维 拟建河道和洪泛区的水力和泥沙输送模型 设计。我们提出了综合河床地貌和二维的结果 基于水力和泥沙输送模型的设计过程 在Tompkins等人（2008）中进行了介绍，并描述了这些结果如何实现，其中包括 速度和切应力分布以及沉积物沉积模式，用于 还开发和完善通道对齐，几何形状和堤岸处理设计 作为洪泛区功能的配置和设计。

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