Physical modelling of pressure flushing for desilting of non-cohesive sediment
作者: Manoochehr Fathi-MoghadamSamad EmamgholizadehMahmoud BinaMehdi Ghomeshi
作者单位: 1Department of Hydraulic Structures , Shahid Chamran University , Ahwaz , Iran
2Department of Water Engineering , Shahrud University of Technology , Shahrud , Iran E-mail: s.emamgholizadeh@sharoodut.ac.ir
3Department of Hydraulic Structures , Shahid Chamran University , Ahwaz , Iran E-mail: bina.mahmoud@gmail.com
4Department of Hydraulic Structures , Shahid Chamran University , Ahwaz , Iran E-mail: mhdghomeshi@gmail.com
刊名: Journal of Hydraulic Research, 2010, Vol.48 (4), pp.509-514
来源数据库: Taylor & Francis Journal
DOI: 10.1080/00221686.2010.491691
关键词: Dam reservoirPressure flushingScour coneSedimentSiltation
原始语种摘要: During pressure flushing of deposited sediments over large dam intakes, a funnel-shaped crater is formed due to considerable shear flow around the opening. Experiments with variable flow depth and discharge were conducted to determine the geometry of the flushing cone for fine, medium and coarse non-cohesive sediments. These sediments increase with increasing discharge and decrease with increasing reservoir depth and sediment particle size. Using the test results, two equations are proposed to estimate scour cone length and volume. While the water depth over the sediments is the most significant parameter in the collapse of sediments above the intake and initial development of the cone, the sensitivity analysis indicated that the intake flow velocity is the most significant parameter in...
全文获取路径: Taylor & Francis  (合作)
分享到:
来源刊物:
影响因子:1.037 (2012)

×
关键词翻译
关键词翻译
  • flushing 湿法充填
  • desilting 清淤
  • cohesive 粘着的
  • sediment 沉积
  • intake 收气
  • initial 开首字母
  • significant 有效的
  • crater 火山口
  • parameter 参数
  • discharge