Flood control and drainage calculation method for lake and river gate pump system in plain lake area

Abstract

The invention discloses a flood control and drainage calculation method for a lake and river sluice pump system in a plain lake area, which comprises the following steps of: designing an in-lake floodprocess and an in-river flood process by adopting a rainfall runoff model according to day-by-day rainfall and day-by-day water level data of a plain lake area hydrological survey station; calculating the water level below the first-stage sluice, the water level above the last-stage sluice, the water level in front of a pump station and the water level of a riverway measuring point of the two-stage series sluice group by utilizing an open channel non-constant flow basic equation with lateral inflow; establishing gate outflow models under different flow states of the sluice to calculate sluicedischarge capacity; establishing a flood diversion area flow calculation model to calculate flood diversion flow; and establishing a pump station drainage model to calculate the drainage capacity ofthe pump station. According to the method, the model of the flood control and drainage system state result can be effectively solved according to the known conditions and the specified scheduling strategy; and according to a computer simulation result of the flood control and drainage system state, opinions of large-scale flood drainage pump station scheduling and main lake control application areproposed.

Description

technical field [0001] The invention relates to the technical field of water resources and the environment, in particular to a calculation method for flood control and drainage of lake and river sluice pump systems in plain lake areas. Background technique [0002] The lake area in southern my country is an alluvial plain of rivers and lakes, with flat terrain, fertile land, abundant rainfall, dense river network, and numerous lakes. It is an important agricultural and sideline production base. However, since the ground elevation is mostly lower than the flood level of the outer river, the safety of flood control depends on the protection of dikes. The rainfall in the flood season is heavy and concentrated, and the flood in the lake area is supported by the continuous high water level of the outer river, making it difficult for self-flowing drainage and easy to cause waterlogging disasters. After treatment, most of the lake areas have formed lakes and rivers composed of reg...

AI Technical Summary

Problems solved by technology

So far, most domestic and foreign studies on the optimal scheduling of flood control systems in plain lake areas and urban river and lake sluice pump group drainage systems have focused on construction planning or project demonstration. For the optimization of large drainage systems composed of flood control and drainage facilities in plain lake areas Few studies have been done on drainage scheduling and operation

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