High-low ridge stilling pool achieving double-layer disperse energy dissipation

A technology of decentralized energy dissipation and stilling pools, which is applied in water conservancy projects, sea area engineering, coastline protection, etc., can solve problems affecting the normal operation of flood discharge structures, damage to the structure of stilling pools, and unstable flow states, so as to avoid air pollution. Effects of reducing cavitation, protecting safety, and improving stress conditions

Active Publication Date: 2014-03-26
CHINA THREE GORGES CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the water flow in the centralized energy dissipation area is turbulent. Although it achieves the effect of efficient energy dissipation, it does not fully utilize the length of the stilling pool for energy dissipation. Moreover, the water surfa

Method used

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  • High-low ridge stilling pool achieving double-layer disperse energy dissipation
  • High-low ridge stilling pool achieving double-layer disperse energy dissipation
  • High-low ridge stilling pool achieving double-layer disperse energy dissipation

Examples

Experimental program
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Example Embodiment

[0060] Example 1

[0061] The structure of the double-layer dispersed energy dissipation high and low ridge stilling pool in embodiment 1 of the present invention is as follows figure 1 , image 3 , Figure 4 , Figure 5 , Figure 7 As shown, including the sill water flow inlet section, the upper stilling pool 3 connected with the water flow inlet, the lower stilling pool 4 behind the upper stilling pool 3, the tail sill 5 at the tail of the stilling pool, and the stilling pool The connecting shield 6 and the water flow inlet section are composed of high-ridge discharge holes 1 and low-ridge discharge holes 2 arranged alternately and a middle partition wall 7 between the high-ridge discharge holes and the low-ridge discharge holes.

[0062] figure 1 Display the hole number N of the high ridge drain hole 1 1 Is 3, the number of holes in the low ridge drain hole 2 N 2 Is 2; on the basis that the holes on both sides are high ridge drain holes 1, the embodiment and figure 1 The diffe...

Example Embodiment

[0064] Example 2

[0065] The structure of the double-layer dispersed energy dissipation high and low ridge stilling pool described in Example 2 of the present invention is as follows figure 1 , image 3 , Figure 4 , Figure 5 , Figure 7 As shown, the specific structure of the stilling pool is the same as that in Example 1, except that the length L of the upper stilling pool 3 2 Total length of stilling pool L 1 , And the height of the stilling pool sill d 4 .

[0066] The relevant structural parameters of the high and low ridge stilling pool of the double-layer dispersed energy dissipation of this embodiment 2 are as follows: the width W of the upper stilling pool 3 and the lower stilling pool 4 1 108m, the overall length of the stilling pool L 1 228m, the length L of the upper stilling pool 3 2 57m, width B of high ridge drain hole 1 1 6m, the width B of the low ridge drain hole 2 2 8m, the height d from the outlet end of the high ridge discharge hole 1 to the bottom of the lowe...

Example Embodiment

[0067] Example 3

[0068] The structure of the double-layer dispersed energy dissipation high and low ridge stilling pool described in Example 3 of the present invention is as follows figure 2 , image 3 , Figure 4 , Image 6 , Figure 8 As shown, including the sill water flow inlet section, the upper stilling pool 3 connected with the water flow inlet, the lower stilling pool 4 behind the upper stilling pool 3, the tail sill 5 at the tail of the stilling pool, and the stilling pool The connecting shield 6 and the water inlet section are composed of low-ridge discharge holes 2 and high-ridge discharge holes 1 arranged alternately and a middle partition wall 7 between the low-ridge discharge holes and the high-ridge discharge holes.

[0069] figure 2 Display the hole number N of the high ridge drain hole 1 1 Is 2, the number of holes in the low ridge drain hole 2 N 2 Is 3; on the basis that the holes on both sides are low ridge drain holes 2, the embodiment and figure 2 The diffe...

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Abstract

The invention relates to a high-low ridge stilling pool achieving double-layer disperse energy dissipation. The high-low ridge stilling pool comprises a falling-ridge water flow inlet section, a stilling pool body, a stilling pool tail ridge and an apron; the falling-ridge water flow inlet section is composed of high-ridge flow drainage holes, low-ridge flow drainage holes and partition walls, wherein the high-ridge flow drainage holes and the low-ridge flow drainage holes are arranged in a combined mode, and the partition walls are located between the high-ridge flow drainage holes and the low-ridge flow drainage holes; the stilling pool body comprises an upper stilling pool body and a lower stilling pool body, the upper stilling pool body is connected with the water flow inlet section, the floor elevation of the upper stilling pool body is equal to the elevations of the outlet ends of the low-ridge flow drainage holes, the lower stilling pool body is located behind the upper stilling pool body, and the floor elevation of the lower stilling pool body is lower than that of the upper stilling pool body; the stilling pool tail ridge is located at the tail portion of the stilling pool body, and the apron is connected with the stilling pool body. The high-low ridge stilling pool can reduce impact to the front portion of the high-low ridge stilling pool caused by discharged flow and homogenize the concentrated energy dissipation region of the front half portion of the high-low ridge stilling pool, the effect of double-layer disperse energy dissipation is achieved, and the phenomena of violent water flow turbulent fluctuation and great water surface fluctuation of the concentrated energy dissipation region are eliminated.

Description

technical field [0001] The invention relates to a low-atomization and high-efficiency flood discharge and energy dissipation technology for high water head and large single-width flow in water conservancy and hydropower projects, in particular to a high and low sill stilling pool technology for double-layer dispersed energy dissipation. Background technique [0002] At present, the problem of flood discharge and energy dissipation with high water head and large single-wide flow is a difficult and crucial problem in water conservancy projects. [0003] In the prior art, the patent with publication number CN101215828A proposes a high and low bottom flow stilling pool; and the patent with publication number CN101624818A improves the high and low bottom flow stilling pool by adopting differential split imports, including The water flow inlet section, the stilling basin connected with the water flow inlet section, and the apron connected with the stilling basin. The energy dissi...

Claims

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Application Information

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IPC IPC(8): E02B8/06
Inventor 牛志攀孙志禹朱红兵尹庭伟惠二青张丽
Owner CHINA THREE GORGES CORPORATION
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