Reservoir spillway and flood discharge method

Abstract

The invention relates to the technical field of spillways, in particular to a reservoir spillway and a flood discharge method. The reservoir spillway mainly comprises a vertical shaft and a water outlet channel vertically connected to one end of the vertical shaft. A plurality of siphon pipelines are arranged at the upper end of the vertical shaft in the circumferential direction. One end of eachsiphon pipeline is arranged on the outer wall of the vertical shaft and is a drainage section. The end face of each drainage section is lower than the upper end face of the vertical shaft. The other end of each siphon pipeline is a discharge section. The discharge sections are arranged on the inner wall of the vertical shaft and spirally distributed downwards towards the bottom of the vertical shaft in the circumferential direction. The reservoir spillway and the flood discharge method have the advantages that flood falling into the vertical shaft can fall spirally through the spirally distributed discharge sections, energy is gradually dissipated when the flood moves, impact of the flood on the shaft bottom is reduced, and therefore the probability of damage to the vertical shaft is reduced.

Description

technical field [0001] The invention relates to the technical field of spillways, in particular to a reservoir spillway and a flood discharge method. Background technique [0002] The spillway is the flood control equipment for water conservancy structures such as reservoirs. It is mostly built on one side of the dam, like a large tank. When the water level in the reservoir exceeds the safe limit, the water will flow downstream from the spillway to prevent the dam from being destroyed. Affected by various factors such as geological conditions and surrounding environment, the spillway of small and medium-sized reservoirs used for irrigation and power generation is often designed as a shaft-type spillway. After the water level rises and submerges the shaft, the flood will fall into the shaft and then be discharged. [0003] The Chinese invention patent with the authorized notification number CN103469772B discloses a reservoir shaft type spillway. The spillway includes a shaft ...

AI Technical Summary

Problems solved by technology

[0004] But similar to the above-mentioned spillway in the actual operation process, because the inside of the shaft is hollow before the flood discharge, once the flood discharge starts, a large amount of floodwater will directly rush into the shaft and directly hit the bottom of the well, and the flood will affect the bottom of the well On concrete, often results in shaft damage and higher repair costs

Images