Test adjusting method for flood diversion project

The invention discloses a test adjustment method for a flood diversion project, and the method comprises the steps: selecting a geometric scale, and determining a simulation range of a flood diversion project model; a model is manufactured, a flood discharge gate water inlet canal is obliquely crossed with an upstream river channel, an upstream wing wall is arranged on the upstream of a water discharge gate, and a first stilling pool, a first apron, a flexible apron, an overflow weir, a second stilling pool and a second apron are sequentially arranged on the downstream of the water discharge gate; arranging a water gauge and a flow velocity measuring system; determining a flood diversion control water level according to the flood diversion quantity, and performing a flood diversion test; the deflection angle of the upstream wing wall and the bank slope line type of the water inlet canal are adjusted, so that the upstream water level of the sluice meets the requirement; the bottom elevation of the first stilli