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Sediment modelling and design optimization for stormwater ponds

机译：雨水塘的泥沙建模与设计优化

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Stormwater ponds, including dry ponds, wet ponds and constructed wetlands, have been widely used for sediment removal from stormwater runoff. In this paper, sediment removal mechanisms, modelling approaches and optimization of design for stormwater ponds are reviewed and discussed. The settling velocity for discrete particles is introduced and compared. Settling velocity distribution should be characterized for individual sites for the most cost-effective design of new stormwater ponds. Different methods for estimating trap efficiency of stormwater ponds are then summarized, including empirical models and theoretical models. The sediment transport modelling method is also discussed. Optimization of pond design for improved sediment removal is described, with many key factors taken into account such as residence time, vegetation, wind, turbulence, stratification, inflow and outflow. A high system hydraulic efficiency can be achieved through proper design of the shape of the pond, length-to-width ratio, baffling, depth, and the location of inlets, outlets and vegetation. Finally, various issues associated with typical numerical models for sediment transport in stormwater ponds are discussed. This review paper intends to provide a state-of-the-art of sediment modelling in stormwater ponds and to point the direction for design optimizations.
机译：包括干池，湿池和人工湿地在内的雨水池塘已被广泛用于去除雨水径流中的沉积物。本文对雨水塘的除沙机理，建模方法和设计优化进行了综述和讨论。引入并比较了离散颗粒的沉降速度。对于新的雨水塘的最具成本效益的设计，应针对各个地点确定沉降速度分布。然后总结了估算雨水塘陷阱效率的不同方法，包括经验模型和理论模型。还讨论了泥沙运移的建模方法。描述了优化池塘设计以改善沉积物去除效果，并考虑了许多关键因素，例如停留时间，植被，风，湍流，分层，流入和流出。通过正确设计池塘的形状，长宽比，挡板，深度以及入口，出口和植被的位置，可以实现较高的系统水力效率。最后，讨论了与典型数值模型在雨水塘中输沙有关的各种问题。本文旨在为雨水池塘提供最新的泥沙模型，并为设计优化指明方向。

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