Water conservancy project detection gate convenient to adjust and use method thereof

The invention discloses a water conservancy project detection gate convenient to adjust. The detection gate comprises a bottom plate; a pair of side plates are arranged on the two sides of the top face of the bottom plate; a gate plate is connected with the two side plates through sliding assemblies; a rectangular box is arranged on the top face of a transverse plate; a driving mechanism is installed in the rectangular box; the driving mechanism is connected with the gate plate through a hinge assembly; a rectangular groove is formed in the gate plate in a sunken mode; a flow limiting plate is arranged at the top of a U-shaped frame; a lifting plate is arranged at the top of the flow limiting plate in the rectangular groove; a buffering assembly is arranged on the top face of the lifting plate; and a pair of lifting mechanisms are arranged at the two ends of the bottom face of the lifting plate. The invention further discloses a use method of the water conservancy project detection gate convenient to adjust,