Effects of Geotechnical Parameters on Discharge Coefficient of Inbuilt Spillways
Rockfill dams with inbuilt spillways are capable of passing surplus discharge by through flow/overtopping and exhibits many advantages including reduced diversion costs,smaller terminal structures,etc.Further clarification of discharge coefficient (Cd) for this type of spillway is required for engineering purposes due to the complicated nature of turbulent flow through coarse porous media and/or boundary conditions. An experimental program was conducted to determine effects of uniformity coefficient (Cu),the curvature coefficient (Cc),the void ratio (e) and a dimensionless grain diameter defined by (d50/d100) on the discharge coefficient (Cd). Observations indicate a significant reduction of discharge coefficient by increasing Cu and decreasing e &d50/d100.However,probable effects of Cc on Cd were not significant in these investigations.
internal spillway discharge coefficient uniformity coefficient curvature coefficient
A.Tahershamsi H.Bayat J.Mahboubi M.Geranmehr
Associate Professor,Department of Civil Engineering,Amirkabir University of Technology Postgraduate Student,Amirkabir University of Technology,Tehran
国际会议
The 1st International Symposium on Rockfill Dams(第一届堆石坝国际研讨会)
成都
英文
293-299
2009-10-18（万方平台首次上网日期，不代表论文的发表时间）