Fastening treatment device for water conservancy project maintenance and treatment method thereof

The fastening treatment device comprises a water channel, a rectangular frame is arranged above an opening of the water channel, a fixing plate is arranged in the middle of the interior of the rectangular frame, the two sides of the fixing plate are each provided with a pair of connecting plates, the front side and the rear side of the rectangular frame are each provided with a pair of rectangular through holes, and the two sides of the fixing plate are each provided with a pair of long plates; each connecting plate is connected with the corresponding long plate through a limiting mechanism; a pair of side plates is arranged on the front side and the rear side of the top face of the fixing plate, a long shaft is arranged between the side plates, a pair of fixing shafts is arranged on the top face of the fixing plate and located between the side plates, the middle of each fixing shaft is sleeved with a fixing gear, and each fixing shaft is connected with the long shaft through a meshing assembly. The problem t