水利水电科技进展2025，Vol.45Issue(2)：17-23,7.DOI:10.3880/j.issn.1006-7647.2025.02.003
高含沙侧向进水前池泥沙分布特征
Characteristics of sediment distribution of lateral inflow forebay under high-concentration sediment conditions
摘要
Abstract
To address the problem of sediment accumulation in the lateral inflow forebay of large pumping stations that pumps water from sediment-laden rivers,taking a lateral inflow forebay of the Jingtaichuan Electric Power Irrigation Project in Gansu Province as the research object,FLUENT software was used to numerically simulate water-sediment two-phase flow under sedimentation conditions for different contraction wall configurations of the lateral inflow forebay based on the Realizable k-ε turbulence model coupled with mixture multiphase flow model.The results show that a high-velocity mainstream zone is formed in the center of the inflow forebay,and vortices of varying sizes are generated on both sides of the mainstream zone,forming two low-velocity recirculation zones.Affected by the flow field structure,these recirculation zone on two sides are high-concentration sediment areas,with the relative sediment concentration increasing significantly from the mainstream zone to the recirculation zone.The increase in relative sediment concentration with the water depth in the recirculation zones is more significant than that in the mainstream zone.As the contraction angle of the sidewall of the lateral inflow forebay increases,the area of the recirculation zone outside the mainstream zone decreases significantly,the sediment-carrying capacity of the water flow is enhanced,and the proportion of the high-concentration sediment areas is significantly reduced,effectively improving the sediment deposition situation in the forebay.关键词
泵站/侧向进水前池/收缩边墙/流场/含沙量Key words
pumping station/lateral inflow forebay/contraction sidewall/flow field/sediment concentration分类
水利科学引用本文复制引用
樊新建,姚薇,董春海,乔文,贾广钰,孙江河..高含沙侧向进水前池泥沙分布特征[J].水利水电科技进展,2025,45(2):17-23,7.基金项目
国家自然科学基金项目(513798128) （513798128）
甘肃省自然科学基金项目(21JR7RA238) （21JR7RA238）
甘肃省水利科学试验研究及技术推广项目(23GSLK038) （23GSLK038）
