River flow distribution device for hydraulic engineering model test

The invention discloses a water conservancy project model test river channel flow distribution device which comprises a rectangular water tank, a splitter plate is arranged in the water tank, the splitter plate is arranged in the longitudinal direction of the water tank so as to divide the corresponding section of the splitter plate and the water tank corresponding to the downstream of the splitter plate into a beach river channel and a main channel river channel, and the bottom of the beach river channel is higher than the bottom of the main channel river channel. The bottom of the main channel is flush with the bottom of the water tank; a flow adjusting unit is arranged at the inlet end of the beach river channel and used for adjusting the flow ratio of water flow entering the beach river channel to the main channel river channel. A flow velocity measuring unit is arranged at the downstream end of the splitter plate and used for measuring the flow velocity of water flow in the bottomland river channel and t