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Flow channel outlet structure of flood discharge surface hole of high arch dam

A technology of outlet structure and flood discharge channel, which is applied in the field of flow channel outlet structure and the flow channel outlet structure of high arch dam flood discharge surface hole, which can solve the problem of insufficient vertical opening of water tongue, unstable water fin, and bottom plate of water cushion pond Large impact pressure and other problems, to achieve the effect of reduced impact pressure, stable flow state, and strengthened lateral restraint

Active Publication Date: 2013-09-18
POWERCHINA CHENGDU ENG
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

Although this body type shrinks the side wall of the flow channel to make the surface hole water tongue narrow in the flow channel, but after the surface hole water tongue is out of contact with the bottom plate, the water tongue is no longer restrained in the lateral direction, resulting in more instability Water fins; in addition, due to the restraint of the bottom plate, the water tongue is not fully stretched in the longitudinal direction, the water tongue enters the water more concentratedly, and the impact pressure on the bottom plate of the pool is relatively large

Method used

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  • Flow channel outlet structure of flood discharge surface hole of high arch dam
  • Flow channel outlet structure of flood discharge surface hole of high arch dam

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Embodiment Construction

[0011] Such as figure 1 , figure 2 Shown is a flow channel outlet structure of a high arch dam flood discharge surface hole provided by the present invention that can form a water tongue that is fully stretched longitudinally and has a stable lateral flow state. The outlet structure of the flow channel includes a flood discharge channel 5 consisting of a bottom plate 2 formed by an arch dam 1 and a side wall 4 formed by piers 3. The inner side of the tail end 7 of the side wall 4. In this way, by extending the side wall 4 of the flood discharge channel 5 outwards, after forming a structure in which the tail end 7 of the side wall 4 is located outside the end 6 of the bottom plate 2, the water tongue of the surface hole is separated from the constraint of the bottom plate 2 of the flow channel. Finally, it can still be constrained by the side wall 4 of the flow channel, so that the horizontal constraint of the water tongue is strengthened, the unstable water fins are reduced...

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Abstract

The invention discloses a flow channel outlet structure, particularly relates to the flow channel outlet structure of a flood discharge surface hole of a high arch dam, and belongs to the technical field of civil design construction. The flow channel outlet structure is capable of forming nappe which is fully stretched in a longitudinal direction and has a stable flow state in a transverse direction. The flow channel outlet structure comprises a flood discharge flow channel with a bottom plate formed by an arch dam and a side wall formed by a dam pier, wherein the side wall is linearly shrunk inwards in the longitudinal direction and the tail end of the bottom plate is positioned on the inner side at the tail end of the side wall.

Description

technical field [0001] The invention relates to a flow channel outlet structure, in particular to a flow channel outlet structure of a flood discharge surface hole of a high arch dam, and belongs to the technical field of civil engineering design and construction. Background technique [0002] The non-collision flood discharge energy dissipation method of the surface hole water tongue and the deep hole water tongue in the air is a new type of flood discharge energy dissipation method that can effectively reduce the flood discharge atomization intensity of the high arch dam body. The structure of shrinking flow channel such as wide tail pier is adopted to limit the lateral spread of the surface water tongue and the deep hole water tongue, and promote the longitudinal pulling of the water tongue, so that the water tongue of the surface hole and the water tongue of the deep hole are interspersed in the air without air Collision, the purpose of reducing the enhancement of flood ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02B8/06
Inventor 周钟张公平饶宏玲唐忠敏潘晓红胡云明唐虎张剑
Owner POWERCHINA CHENGDU ENG
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