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首页> 外文期刊>Australian journal of water resources >Design rainfall temporal patterns in Australian Rainfall and Runoff: Durations exceeding one hour
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Design rainfall temporal patterns in Australian Rainfall and Runoff: Durations exceeding one hour

机译:设计澳大利亚降雨和径流中的降雨时间模式:持续时间超过一小时

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The current edition of Australian Rainfall and Runoff espouses the design event approach in which a single flood is the "event" with which the hydraulic structure is expected to cope during its working life. The uniform rainfall of the selected average recurrence interval requires a temporal pattern before input to a catchment model. Australian Rainfall and Runoff provides temporal patterns for each of eight defined zones, with 20 specific durations and two classes of average recurrence interval. These patterns are inconvenient to use, especially for other than specified storm durations, and at zone boundaries when differently-shaped patterns apply. This paper shows that distinctions between zones and average recurrence intervals are not significant. Only two of the 144 temporal patterns for durations 1.5 to 24 h are significant in flood design practice, and these are replaced with continuous equations that allow design storm durations to be divided into any number of increments.
机译:当前版本的《澳大利亚降雨与径流》拥护设计事件方法,在该方法中,一次洪水是水力结构在其使用寿命期间可以应对的“事件”。在输入到集水区模型之前,所选平均复发间隔的均匀降雨需要时间模式。澳大利亚降雨和径流为八个定义的区域中的每个区域提供了时间模式,具有20个特定的持续时间和两类平均复发间隔。这些模式使用起来很不方便,特别是对于特定的暴风雨持续时间,以及在应用不同形状的模式时在区域边界。本文表明,区域和平均复发间隔之间的区别并不明显。在持续时间为1.5到24小时的144个时间模式中,只有两个是重要的,在洪水设计实践中,这些模式已被连续方程式取代,这些方程式可将设计风暴持续时间分为任意数量的增量。

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