Control device and method for hydraulic model test reservoir bank slope gradient

The invention discloses a control device and method for the hydraulic model test reservoir bank slope gradient. The device comprises a multi-direction movement type frame and an operation device. The multi-direction movement type frame comprises a right-angled rod piece with one end capable of being fixed, the other end of the right-angled rod piece is connected with a first control box, and the first control box controls a first rod piece which is in meshing linkage with the first control box to move in the longitudinal direction of a water trough. The front end of the first rod piece is connected with a second control box, the second control box controls a second rod piece which is in meshing linkage with the second control box to move in the transverse direction of the water trough, and the second rod piece is perpendicular to the first rod piece. A third control box is fixed to the front end of the second rod piece, and the third control box controls a third rod piece which is in meshing linkage with the