人民长江2024，Vol.55Issue(8)：193-201,9.DOI:10.16232/j.cnki.1001-4179.2024.08.026
折线大斜切挑坎水力特性研究
Hydraulic characteristics of folding-line large oblique cutting bucket
摘要
Abstract
Oblique cutting trajectory buckets are used in water conservancy projects whose axis of discharge structure intersects with the natural channel at an angle.However,if the downstream channel is too narrow,the oblique cutting bucket can not meet the requirements of the water flow returning to the channel and the energy dissipation and erosion prevention tasks.For this rea-son,based on the traditional oblique cutting bucket,a folding-line large oblique cutting bucket was proposed.This article used model experiments to measure the diffusion of water jets and the pressure distribution on the bottom plate in the downstream plunge pool under different inflow conditions for different types of folding-line large oblique cutting buckets,and the hydraulic characteristics of the folding-line large oblique cutting bucket are obtained.The results showed that compared to traditional ob-lique cutting buckets,the folding-line large oblique cutting bucket can not only flexibly adjust the volume and water-falling po-sition of the jet flow,but also alleviate the uneven distribution of pressure in the plunge pool.The research results can provide a certain reference for the engineering design and application of the folding-line large oblique cutting buckets.关键词
折线大斜切挑坎/空中扩散/水垫塘压力/挑流消能/两河口水电站Key words
folding-line large oblique cutting bucket/aerial diffusion/pressure of plunge pool/trajectory bucket type energy dissipation/Lianghekou Hydropower Station分类
建筑与水利引用本文复制引用
马智,邓军,卫望汝,隆强..折线大斜切挑坎水力特性研究[J].人民长江,2024,55(8):193-201,9.基金项目
国家自然科学基金重点项目(51939007) （51939007）
国家自然科学基金区域创新发展联合基金项目(U23A20668) （U23A20668）
