Bent slope underflow energy dissipation structure of water conservancy and hydropower engineering

Abstract

The invention discloses a bent slope underflow energy dissipation structure of water conservancy and hydropower engineering. The bent slope underflow energy dissipation structure of the water conservancy and hydropower engineering comprises a shoreside overflow weir, a discharging groove and a power dissipation pool which is a bent slope power dissipation pool. The power dissipation pool comprises a power dissipation pool bent slope segment connected with the discharging groove and a power dissipation pool flat bottom segment which is a manual deep pool with a flat bottom. The head of hydraulic jump in the power dissipation pool is formed on the power dissipation pool bent slope segment. Stable and complete hydraulic pump is formed in the bent slope power dissipation pool. Multiple power dissipation mounds which can assist in dissipating energy are arranged in the power dissipation pool. With the power dissipation structure, the problems of dissipating energy of water flow with large flow, a low Froude number and tail water with a large water level amplitude of variation are economically and effectively solved. The energy dissipating rate is effectively improved. The power dissipation pool bent slope segment is used and the power dissipation mounds are arranged on the power dissipation pool flat bottom segment to assist in dissipating energy, the length and the depth of the power dissipation pool flat bottom are effectively reduced, the energy dissipating rate is improved, engineering amount and investment are reduced, a digging height and a digging range of a slope in an engineering zone are reduced so as to reduce damage and affection on the ecological environment in the engineering zone by construction, and good social and economic benefits are achieved.

Description

technical field [0001] The invention relates to an underflow energy-dissipating structure in water conservancy and hydropower projects, in particular to an underflow energy-dissipating structure in water conservancy and hydropower projects with large flow, low Froude number and large tail water variation. Background technique [0002] The length of the stilling basin determined by the traditional hydraulic bottom flow energy dissipation calculation theory is considered to be the length of the stilling basin with the flat bottom section, and the hydraulic jump energy dissipation occurs in the flat bottom section of the pool. For the design of the energy dissipator for the water flow entering the stilling basin with a large single-width flow rate, a low Froude number, and a shallow downstream tailwater, the length of the stilling basin required by this calculation theory is relatively large; at the same time, due to The larger the flow rate into the pool, the larger the second...

AI Technical Summary

Problems solved by technology

Therefore, the engineering quantity and engineering investment of the stilling basin are relatively large, especially the spillway arranged on the bank is limited by the terrain and geological conditions, and it is often difficult to meet the needs of the stilling basin designed according to the traditional theory

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