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所在平台: Udemy |
课程主页: https://www.udemy.com/course/hec-hms-tutorial-attenuationstormwater-neutrality-modelling/
课程评论：没有评论
**Coursera课程总结：HEC-HMS 滞留/雨水零排放模型** 本课程简要介绍了“雨水零排放”的概念，即开发后场地排放的雨水峰值流量不超过开发前场地雨水径流的峰值流量。 当场地从草地（可渗透）变为硬质铺装（不可渗透），例如车道、建筑、屋顶和平台时，雨水径流的量和速度会增加。 对于小型住宅开发项目，若需实现雨水零排放，《管理雨水径流》指南提供了详细的参考信息和四种实现方案。 雨水零排放通常通过滞留系统实现，该系统能暂留场地雨水排放，并以不超过场地原始排放速率的慢速释放。常用于此目的的是带有可控出流孔（孔口）的滞留池。市面上有多种滞留池产品，提供地上和地下安装选项。此外，过大尺寸的管道和蓄水池也可用于实现雨水零排放。 本课程教授了一种为拟建开发项目建模雨水零排放的简便方法。
In simple terms stormwater neutrality means that the peak flow rate of stormwater that discharges from a site after it is developed is not greater than the peak flow rate of stormwater runoff prior to development.Often as part of developing or building on a site, grassed (permeable) areas are replaced with sealed (impermeable) areas, such as driveways, buildings, roofs and decks. This change in surface from permeable to impermeable increases the amount (and speed) of stormwater that will run off these areas.For small residential developments that require stormwater neutrality, Managing Stormwater Runoff is an easy to read guideline that provides information and guidance regarding why stormwater control is required and four options to achieve stormwater neutrality.Often stormwater neutrality is achieved by the use of a system which holds back or detains the stormwater discharge from the site, and only allows a slow release of the stormwater at a rate that is no more than the sites original discharge.Commonly the stormwater that is held back or detained is stored in a (detention) tank, which has a controlled outlet (orifice). There are a large number of detention tank products available with above ground or below ground options depending on the situation and preference. Oversized pipes and ponds are also used to achieve stormwater neutrality.This course provided a simple method on how to model stormwater neutrality for a proposed development
