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

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...

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 surface fluctuates greatly during energy dissipation, and there is a problem of unstable flow. At the same time, there is also the possibility of damaging the structure of the stilling basin and affecting the normal operation of the flood discharge structure

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