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[1]MA Chunyan,WANG Zhanli,LU Shaojuan,et al.Experimental Study of Overland Flow Pattern in the Banduo Hydropower Station Project Area of the Yellow River[J].Research of Soil and Water Conservation,2016,23(04):6-9.

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Experimental Study of Overland Flow Pattern in the Banduo Hydropower Station Project Area of the Yellow River

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 23 Number of periods: 2016 04 Page number: 6-9 Column: Public date: 2016-04-28

Title:: Experimental Study of Overland Flow Pattern in the Banduo Hydropower Station Project Area of the Yellow River

Author(s):: MA Chunyan¹, WANG Zhanli^2,3, LU Shaojuan², BU Yaojun¹, LI Qiang¹; 1. College of Life Sciences, Yulin University, Yulin, Shaanxi 719000, China;
2. State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Northwest A & F University, Yangling, Shaanxi 712100, China;
3. Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi 712100, China

Keywords:: Banduo hydropower station of Yellow River; project area; waste grassland; flow pattern; Reynolds number

CLC:: S157

DOI:: -

Abstract:: Reynolds number is one of the important hydraulics parameters. Clarifying the variation of slope flow Reynolds number will help recognize the internal mechanism of slope erosion process from the point of dynamics. On waste grassland in the Banduo hydropower station project area of the Yellow River, the overland flow patterns are studied by artificial scouring experiment under different slope gradients and water supply discharge. The results show that:(1) the overland flow Reynolds number on the waste grassland, a Judging index of flow pattern, changes under different water supply discharges and different slopes rose first and stabilized finally, the logarithmic equation can be used to describ the process; (2) the average overland flow Reynolds number increased with increase of water supply discharge and slope gradients, which can be described by power function equation and exponential equation, respectively, and to both of the two factors, by a dual power function equation; (3) the overland flow Reynolds number on the waste grassland is less than 500 under different water supply discharge and different slopes. The average Reynolds number varies between 86 and 339, indicating that overland flow in waste grassland is laminar flow on the project area.

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