DOI 10.35776/MNP.2020.07.08
UDC 628.311:556.164

Volkov Sergei, Zhitenev A. I., Kurganov Iu. A., Kostenko I. G., IGNATCHIK V. S., Ignatchik S. Iu., Kuznetsova N. V., Seniukovich Mikhail

Substantiation of the method for estimating the climatic parameters of rain showers by the data of the precipitation gauge system (for the discussion)

Summary

The standard procedure of the hydraulic calculation of surface runoff disposal systems, given in CP 32.13330.2018 «Sewerage. External networks and structures», is implemented within the framework of the method of limiting intensities developed about 100 years ago by Professor P. F. Gorbachev, based on the «theory of rain showers», that was subsequently improved. Herewith the rated parameters of rains determined by the results of many years of observations several years ago were used as initial data. Due to climate change, the need for updating local climate constants is obvious; however, this cannot be implemented in each region due to the lack of self-recording rain gauges or due to the small amount of information accumulated. Using the example of St. Petersburg, an experimental substantiation of the method for accelerated estimation of the climatic parameters of rain showers according by the data of a system of 34 precipitation gauges was carried out. It is established that the revealed rainfall patterns over 5 years do not contradict the classical theory. Moreover, in the interval of periods of a single excess of p > 10 years, their validity is the highest compared to other methods due to a more representative sample.

Key words

surface runoff disposal system , method of limiting intensities , climatic parameters , force of rain , rainfall duration

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