Special-shaped diversion device for turning flood discharge groove

The invention provides a special-shaped diversion device for a turning flood discharge groove and belongs to the technical field of drainage buildings. The special-shaped diversion device comprises aturning drainage groove and special-shaped flow guide structures which are laid at the cantilever sill of the drainage groove in a parallel mode. According to the deviation direction, the flow velocity and the flow state of the upstream incoming flow at the outlet of the drainage groove, the gaps of the special-shaped flow guide structures at the outlet of the drainage groove are distributed. Thespecial-shaped flow guide structures comprise semi-elliptical cylindrical pier bodies, middle pier bodies and folded-line pier bodies which are of integral structures. The semi-elliptical cylindricalpier bodies are distributed in front of sills, and the side views are in a right-angled trapezoid shape. The folded-line pier bodies are distributed on the sills and are in the same direction with thelongitudinal axis of the tu