Emergency regulation and control method for water return gate in accident section of open channel water conveyance project

Abstract

The invention discloses an emergency regulation and control method for a water return gate in an accident section of an open channel water conveyance project, and the method comprises the steps: obtaining the starting time of the required water return gate, and timely and orderly arranging water return according to the water regimen in the early stage of emergency scheduling. In the later period of emergency dispatching, the water level prediction formula calculation result is combined, and the water return gate starting time is corrected; in the aspect of setting the closing water level of the recession gate, the design water level is replaced by the normal operation lower limit water level, so that the single recession time of the recession gate is prolonged. According to the method, the starting frequency of the water recession gate can be reduced, and the orderliness and reliability of emergency regulation and control are improved.

Description

technical field [0001] The invention belongs to the field of water conveyance engineering, and in particular relates to an emergency control method for a water return sluice in an accident section of an open channel water conveyance project. Background technique [0002] In order to adjust the uneven distribution of water resources, many long-distance open channel water delivery projects have been built in my country, such as the middle route project and the east route project of the South-to-North Water Diversion Project. In order to facilitate the adjustment of water level and flow, control gates are set at certain distances in the channel. In order to deal with emergencies, there is a backwater gate in the channel. [0003] During emergency dispatch, the control gates at both ends of the accident point are quickly closed to reduce the water flow. The water flow in the accident section keeps moving downstream under the action of inertia. After being hindered by the contr...

AI Technical Summary

Problems solved by technology

Due to the limitation of artificial prediction level and the conservative operation in the early stage, the water level deviation often needs to be corrected frequently in the later stage, and the number of opening and closing of the retreat gate is large

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