Drilling rig for hydraulic engineering construction and operation method thereof

The invention relates to the technical field of drilling, in particular to a drilling device for hydraulic engineering construction and an operation method thereof.The drilling device comprises a base, moving wheels, a door-shaped frame, a drilling device and a mud suction device.The base is provided with a through hole, the door-shaped frame and the center point of the through hole are symmetrically installed on the base, and a connecting plate slidably connected with the door-shaped frame is arranged in the door-shaped frame; a driving device used for driving the connecting plate to slide up and down on the door-shaped frame is arranged on one side of the upper end in the door-shaped frame, the drilling device is arranged on the connecting plate and comprises a drilling motor and a drill bit, the drilling motor comprises a shell, a sleeve and a driving gear, the sleeve is rotationally arranged in the shell and penetrates through the shell, and a transmission gear is arranged on the outer side of the sleeve;