水力发电学报2024，Vol.43Issue(6)：75-86,12.DOI:10.11660/slfdxb.20240608
植被密度对人工阶梯深潭掺气特性的影响研究
Experimental investigation on aeration characteristics of artificial pooled stepped chutes with different vegetation densities
王宇豪 1潘露 2颜洲 1殷亮 3谌东升 4郭贵 4白瑞迪1
作者信息
- 1. 四川大学 水力学与山区河流开发保护国家重点试验室,成都 610065
- 2. 四川水利职业技术学院,成都 610065
- 3. 中国电建华东勘测设计研究院有限公司,杭州 310000
- 4. 大唐观音岩水电开发有限公司,成都 610065
- 折叠
摘要
Abstract
The main objective of this study is to examine the effects of different vegetation densities on the aeration characteristics of artificial pooled stepped chutes.In this experiment,we investigate the behaviors of air water flows in a rectangular stepped pool,with a bottom slope of 18.4° and two vegetation densities,and the development from the upstream clear water region to the downstream fully developed region.Air contents are measured using a conductivity probe.Experimental results show that,compared with flat and pooled stepped,vegetation in a pooled stepped chute has nearly no influence on the location and water depth of the aeration incepting point,and a calculation formula for its water depth is derived.The cross-sectional average air concentration Ce increases gradually from the step start to 2.5 times the aeration point distance,and then reaches a constant.The maximum number of bubbles at the cross section increases gradually from the ladder start to 4.0 times the aeration point distance,and then reaches a constant,showing a different trend from that of air concentration.Vegetation density has little effect on bubble count distribution and evolution.关键词
阶梯深潭/植被/掺气发生点/断面平均掺气浓度/气泡个数Key words
pooled step/vegetation/inception point/mean air concentration/bubble count分类
水利科学引用本文复制引用
王宇豪,潘露,颜洲,殷亮,谌东升,郭贵,白瑞迪..植被密度对人工阶梯深潭掺气特性的影响研究[J].水力发电学报,2024,43(6):75-86,12.
