A submerged flow control hole for improving energy dissipation of underflow behind wide tail pier
A technology of bottom flow energy dissipation and wide tail pier, applied in marine engineering, construction, barrage/weir, etc., can solve the problems of unfavorable hydraulic jump formation and stability, uneven inflow conditions, scour damage of downstream riverbed, etc., to improve bottom flow The effect of dissipating energy, distributing evenly and improving energy dissipation rate
Active Publication Date: 2020-09-29
SICHUAN UNIV
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Problems solved by technology
This uneven inflow condition causes the water flowing into the pool to roll horizontally in the pool, which is very unfavorable for the formation and stability of the hydraulic jump in the pool, and the water flowing out of the pool will continue to maintain a high flow rate, thus causing great erosion to the downstream riverbed destroy
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Embodiment 1
[0023] A submerged diversion hole for improving energy dissipation of the underflow behind the wide-tailed pier is arranged at a position twice the width of the outlet of the flood discharge sluice downstream of the wide-tailed pier 3, and is arranged at the entrance of the stilling basin. It consists of a number of flow holes arranged horizontally on the bottom plate of the downstream stilling tank. The horizontal direction refers to the direction perpendicular to the water flow direction, and the axial direction of the stilling tank refers to the direction along the water flow. Several flow holes are composed of several side piers 12 and cover plates 11. The side piers stand on the bottom plate of the stilling pool and extend along the longitudinal axis of the stilling pool. The cover plates cover the tops of several side piers, and each adjacent The piers on both sides and the cover plate on the top enclose flow holes, that is, the submerged flow regulating holes. In order ...
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The invention provides shallow buried flow regulating holes improving flaring gate pier rear bottom flow energy dissipation. The holes are formed in the down stream of a flood discharging gate opening, the holes are formed by transversely forming a plurality of flow passing holes in an absorption basin bottom plate and structurally comprise abutment piers and cover plates, the abutment piers are erected on the absorption basin bottom plate and extend in the axis direction of an absorption basin, the cover plates cover the tops of the abutment piers correspondingly, and the adjacent abutment piers and the cover plates therebetween define the flow passing holes, namely the shallow buried flow regulating holes. By means of the shallow buried flow regulating holes provided by the invention, flaring gate pier rear bottom flow energy dissipation is improved, a stable and integral water jump is formed in the basin, and therefore, the energy dissipation ratio is increased.
Description
technical field [0001] The invention belongs to the field of flood discharge and energy dissipation in water conservancy and hydropower projects, and in particular relates to a new submerged diversion hole for improving energy dissipation of underflow behind a wide tail pier. Background technique [0002] Water release and energy dissipation buildings are necessary facilities for water conservancy and hydropower projects. The huge energy carried by the high-speed water flow may not only threaten the safety of discharge structures and even dams, but also cause problems such as downstream river bed scour and water surface fluctuations, which seriously affect the safe operation of the project. Therefore, it is particularly important to set up suitable energy-dissipating structures so that the discharged water flow consumes most of the kinetic energy contained in it in a short downstream range and make it properly connected with the downstream water flow. [0003] In the applic...
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IPC IPC(8): E02B8/06
CPCE02B8/06
Inventor 白瑞迪白中天刘善均王航桑伟刘文
Owner SICHUAN UNIV