Shoreside spillway/flood discharging tunnel outlet folding line type flip bucket

Abstract

The invention discloses a shoreside spillway / flood discharging tunnel outlet folding line type flip bucket. A flip bucket body arranged between an outer side edge wall and an inner side edge wall comprises a flat bottom section, an ogee section, a water flow direction obeying notch section, an inclined water flow direction flip bucket inclined section and a vertical water flow direction flip bucket top section, wherein the flat bottom section is connected with a discharge chute, the ogee section is located at the downstream position of the flat bottom section, the top end of the inner side edge wall is terminated on the flat bottom section, and the ogee section is additionally arranged on the flat bottom section at the downstream position of the top end of the inner side edge wall to formthe edge-wall-free water flow direction obeying notch section. Close to the outer side edge wall, the vertical water flow direction flip bucket top section is reserved on the top of the flip bucket and connected with the water flow direction obeying notch section through the inclined water flow direction flip bucket inclined section, water flow flows towards a riverbed from the side direction whenthe discharge amount is small, a water tongue is longitudinally pulled open in a fan-shaped manner when the discharge amount is medium and large, and water inflows along a main river channel. Energydissipation can be sufficient, the length of the bucket can be reduced, and damage and influences on a downstream spillway or flood discharging tunnel outlet bank slope are reduced.

Description

technical field [0001] The invention relates to the field of flood discharge and energy dissipation in water conservancy and hydropower projects, in particular to a broken-line deflector nose sill at the outlet of a bank spillway / spill tunnel. Background technique [0002] The water flow discharged from the spillway or the spillway has huge energy, and the high-speed concentrated water flow must be connected with the normal flow of the downstream channel through sufficient energy dissipation. Otherwise, the downstream riverbed, bank slope and buildings will be severely scoured and damaged. Usually deflected flow energy dissipation and bottom flow stilling basin are used for energy dissipation. The deflection flow energy dissipation has a greater impact on the safety of the downstream slope and buildings due to the atomization of flood discharge and the depth of the scour pit; the energy dissipation of the bottom flow stilling basin is high due to the long length of the still...

AI Technical Summary

Problems solved by technology

The deflection flow energy dissipation has a greater impact on the safety of the downstream slope and buildings due to the atomization of flood discharge and the depth of the scour pit; the energy dissipation of the bottom flow stilling basin is high due to the long length of the stilling basin and the large excavation depth. Difficulty in construction and large project investment

Images