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在工厂上下水道設計中,雨水道管網的计算工作量相当繁重。首先,必须蒐集当地的雨量公式;如当地沒有雨量公式,就要蒐集有关的气象资料,以便据以推算出适合于工厂地区的雨量公式。然后將雨量公式绘制成阵雨强度曲线表,并按照管纲的布置、各管段的排水面积和集雨延續时间,分段查对降雨强度曲线表及管径計算表,求出各管段的管径、流速及坡度。如此逐段計算的方法是非常繁琐的,而且容易出差錯。在58年技术革命和向元旦献礼高潮中,我組同志发揮了敢想、敢说、敢幹的精神,提出了許多新的課題,簡化雨水道计算方法是其中的一个。題目确定
In the design of the upper and lower waterways of the factory, the calculation workload of the rainwater pipeline network is rather heavy. First, the local rainfall formula must be collected; if there is no rainfall formula, the relevant meteorological data should be collected so that the rainfall formula suitable for the factory area can be derived. Then formulate the rainfall formula into the shower intensity curve table, and in accordance with the layout of the pipeline, the drainage area of each pipe section and the rain collection duration, check the rainfall intensity curve table and the pipe diameter calculation table in sections, and find the pipe diameter of each pipe segment. , flow rate and slope. This method of calculating segment by segment is very tedious and error-prone. In the 58th technological revolution and the climax to New Year’s Day, Comrades of our group played a spirit of daring to think, dare to speak, and dare to do things. They put forward many new topics, and simplifying the calculation method of storm waterways is one of them. Subject determination