Ice discharging structure for open channel

The invention discloses an open channel ice discharge structure which comprises an open channel control water blocking gate, an overflow weir body, a weir crest gate, an ice-water flow dividing gate, a discharge water backflow channel, a discharge water backflow channel outlet control gate, an ice discharge channel and an ice accumulation area, the discharge water backflow channel comprises an upstream section and a downstream section, and the upstream section is located on the lower portion of the discharge channel and perpendicularly intersects with the discharge channel; the top of the drainage channel is communicated with the drainage channel through an ice-water shunting gate, the outlet of the drainage channel is connected with the main open channel through a check gate, the check gate is arranged at the downstream of the open channel check water blocking gate in the main channel and is connected with the main channel and the drainage water backflow channel, the ice drainage channel is the downstream pa