Reverse slope type apron

Abstract

The invention provides a reverse slope type apron. The apron comprises a stilling pool apron section, a sea overtopping section and a big stone backfilling section; the sea overtopping section is arranged in a reverse slope type sea overtopping section manner; the scouring damage of water flowing out of a pond to the sea overtopping section is reduced; the flowing speed of water flowing out of thepond is reduced; a water surface line is smoothly connected with a downstream river channel; the vertical component speed of water flow flowing out of the pond is reduced; the water depth at the outlet of the stilling pool is increased, the overall stability of the stilling pool is improved, the depth of a water cushion in the stilling pool is increased, the energy dissipation rate is increased,the water surface line becomes gentle, water flow can better return to a groove, the stilling pool and the overall anti-scoring performance of the sea waves are improved, and the flow state of downstream water flow is greatly improved.

Description

technical field [0001] The invention relates to the technical field of water conservancy, in particular to a reverse-slope marine diffuser. Background technique [0002] In the drainage structures of water conservancy projects, the turbulent phenomenon of the discharged water flow after passing through the stilling basin is still strong, and there is still a certain amount of residual energy, which will scour the downstream riverbed. The sea is laid on the natural river bed. The function of the sea diffuser is to eliminate the residual energy of the water flow, adjust the flow velocity distribution, and evenly diffuse the water flow out of the pool, making it close to the flow state of the natural river channel to keep the river bed from scouring. In general (industry standard SL265-2001 of the Ministry of Water Resources of the People's Republic of China <Sluice Design Code> 4.4.7) the design of the seaman is horizontal or along the slope to connect with the tail sil...

AI Technical Summary

Problems solved by technology

[0004] The downstream water level of the existing body type changes greatly, and it is easy to cause the water flow to scour the bottom of the connecting section between the sea diffuser and the stilling tank when the water level is low, thus causing the stilling tank to be damaged

Under the normal body size, the descending velocity of the water flow is relatively large, which will cause the washing of the seaman, and the damage of the seaman will intensify the damage of the bottom plate of the stilling pool

At the same time, when the downstream water level is low, the water surface drop increases when the water surface line transitions from the outlet of the stilling tank to the downstream connection, thus aggravating the erosion of the sea.

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