DOI 10.35776/VST.2021.04.05
UDC 628.221

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

Evaluation of the effectiveness of mechanisms for eliminating flooding of urbanized areas with surface runoff

Summary

Flooding of urbanized areas happens quite often, while, during periods of heavy rains, water rises to the surface flooding streets and basements. Flooding occurs for different reasons or due to their combination. The list of measures to reduce the flooding rate has been worked out in the world practice. These include measures aimed at reducing the runoff coefficient of drainage areas, as well as increasing the spare regulating capacities of the networks and sewers, etc. However, evaluating their effectiveness in the Russian Federation is complicated by the fact that the standard method of hydraulic calculation provides for taking into account the values ​​of the periods of one-time excess of the calculated rainfall rates p that indicates the overflow rate in the networks. However, this method does not determine the rate pp of area flooding that results from the water spills. Through the example of St. Petersburg, a calculation method is presented for determining the average annual number of floods, as well as the results of evaluating the effectiveness of measures aimed at reducing them.

Key words

drainage area , surface runoff disposal system , climatic parameters , force of rain , rainfall duration , travel time , flooding

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