基于自然循环雨水径流流量优化调控方法

通过分析现有雨水径流流量调节方法在应用过程中存在的优缺点和发展趋势，介绍了基于雨水自然循环的雨水分流管理方法。该方法将雨水径流分为蒸发、渗滤和排放3部分，通过调节这3部分的比例来模拟区域开发前雨水自然循环过程。分流方法认为：蒸发是降低地面径流量的主要途径之一，蒸发量受当地气象条件的制约，一般为固定值，小的降雨事件以蒸发为主，中等降雨事件以蒸发和渗滤为主。大的降雨事件以排放为主。通过实例分析，详细描述了雨水分流技术的实际应用方法和效果。结果表明．雨水分流技术对于降低雨水径流量和峰流速率，实现雨水的自然循环，保护开发区域的生态环境具有重要实际意义。

A Novel Methods to Regulate Runoff Volume on the Basis of Natural Recycle

This article reviews the development and application of existing runoff volume regulation theories with a focus on emulating natural on site hydrological processes and discusses the design intentions, merits, and weaknesses of each theory. Stormwater split theory is then introduced using elements found in each of these existing theories. This new theory proposes to systematically split runoff into three volumes and evaporate, infiltrate and discharge; and manage these volumes in ways that emulate natural hydrological site processes, thereby creating stormwater management systems that are more ecologically based. The intent is to provide a stormwater management theory that can be used to emulate natural processes of evapotranspiration, infiltration, and runoff and, by extension, emulate pre-development stormwater rate, quality, frequency, duration, and volume.