Open channel gate front floating ice state prediction model and construction method and application thereof

Abstract

The invention discloses an open channel gate front floating ice state prediction model and a construction method and application thereof, and the method comprises the steps: exploring the relation between gate front ice accumulation and transportation data based on open channel gate front floating ice monitoring data in ice-water two-phase water flow, building an ice transportation and accumulatedice discrimination model based on a support vector machine, and therefore, the ice accumulation and transportation state in front of the open channel bulkhead gate in the ice-water two-phase water flow is judged. According to the invention, the support vector machine is used for obtaining the optimal classification hyperplane of the gate front floating ice accumulation and transportation state according to the gate front ice-water two-phase water flow incoming flow condition and the boundary condition, accurate prediction of the gate front floating ice state is achieved, and therefore effective data support is provided for open channel gate front ice accumulation and transportation research and cold region water conservancy projects.

Description

technical field [0001] The invention belongs to the technical field of water conservancy and hydropower engineering, and relates to water conservancy in cold regions, in particular to judging the state of floating ice in front of an open channel gate in an ice-water two-phase flow in a cold region. Background technique [0002] The existence of ice in winter increases the resistance of channel water flow and reduces the area of ​​channel passing water, which will directly affect the channel's water delivery capacity. Water transfer structures such as tunnels, aqueducts, inverted siphons, and gates are common in water diversion channels. The antifreeze design and winter operation of these structures are a major problem. Especially in the application of channel gates, due to the complex water flow characteristics in front of the gates and the existence of ice, its dispatching management is extremely complicated. If you do not understand its characteristics, it will not only af...

AI Technical Summary

Problems solved by technology

The research on mathematical models has developed from one-dimensional to two-dimensional models. The parameters in the model need to be calibrated based on prototype observations or data monitored by upstream and downstream hydrological stations. Usually, some parameters cannot be calibrated.

The development of physical models is mostly based on the understanding and understanding of the physical mechanism. In front of the ice-water two-phase flow gate of the open channel pipeline, there is an interaction among the gate, water flow, ice slush and entrainment vortex, and its mechanism is relatively complicated.

Images