Method of calculating ponding depths of site of coastal nuclear power plant

Abstract

The invention relates to a method of calculating ponding depths of a site of a coastal nuclear power plant. The method comprises the following steps of (I) establishing a surface runoff model capable of representing the relation between a surface water depth and drainage quantity of a rainwater pipe network according to the rainfall condition of the site of the nuclear power plant, overtopping of seawater at the periphery, a surface slope and the site surface solidification condition; (II) as for a drainage process of the rainwater pipe network, considering the jacking effect of overtopping of the seawater at the periphery on rainwater and establishing hydrodynamic model of the rainwater pipe network; (III) dividing computational grids of the site, through causing the drainage quantity of the rainwater pipe network to be equal to the displacement of the rainwater in a pipe network system, realizing coupling calculation of the surface runoff model and the hydrodynamic model of the pipe network, and determining the ponding depths of different areas of the site. According to the method, through combinatorial computing of the influence caused by rainfall of the site and overtopping of the seawater at the periphery of the site, the obtain values of the ponding depths are more scientific and reasonable, so that a flood control plan and a flood control measure are pointedly proposed for important buildings of the nuclear power plant, thus the flood control capacity of the site is improved.

Description

technical field [0001] The invention belongs to the technical field of ponding depth calculation, and in particular relates to a method for calculating the depth of ponding in a coastal nuclear power plant. Background technique [0002] According to the importance of the structures in the plant area, the Binhai Nuclear Power Plant adopts different design standards for the rainwater pipe network system in different areas. The main factory area where the nuclear island is located is designed with the intensity of the once-in-a-millennium rainstorm, and the possible maximum rainstorm intensity is checked. The rainwater pipe network system in the front area of ​​the factory is designed according to the design standards of general large-scale industrial and mining enterprises. The roof of the buildings in the factory area is equipped with a roof drainage system to collect, transport and discharge rainwater. The ground of the factory area is set with different slopes to guide the...

AI Technical Summary

Problems solved by technology

Because the design of the rainwater system in the factory area only considers the discharge of ground rainwater generated by rainfall, but does not consider the discharge of seawater over the sea, and also does not consider the high tide level in the open sea at this time, the outlet of the rainwater pipe network is located below the sea surface, and the drainage of rainwater is affected by the tide level The jacking of the factory area will cause poor drainage of rainwater in the factory area, which may lead to the retention of rainwater and seawater in the factory area, causing local flooding in the factory area

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