River channel research model of combined curve channel bank and test method of river channel research model

The invention discloses a river channel research model of a combined curve channel bank and a test method thereof, and relates to the technical field of medium and small river governance, the river channel research model comprises a combined linear channel model and a combined curve channel model, the left end of the combined curve channel model is provided with a second initial water area; compared with the prior art, through comparison of eight schemes, on the basis of different submerging degrees and lengths of fish bodies for testing, the passing success rate of the combined linear river channel is 70-80%, the passing success rate of the combined curve river channel is 80% or above, the average passing time of the combined linear river channel is 110-130 s, the average passing time of the combined curve river channel is 80-100 s, the passing success rate is increased by about 10%, and the average passing time is shortened by 28%; through analysis of four flow velocity fields, compared with a combined line