چکیده مقاله
In this paper, a new stochastic method for predicting scour hole depth in the future is presented in the braided river The model procedure is as follows:1 It is to apply regression equation with bed height as a dependent parameter and three independent parameters of maximum daily flow, and its corresponding sediment discharge and bed slope, these equations were derived at certain points along the river cross sections over a specific time 2 By applying observed data, sediment rating curve equation as well as a relationship between slope, water and sediment discharge were derived 3 Simulation of maximum monthly flow by ARIMA stochastic modeling 4 By substituting values obtained from step 3 into 2 and 1, respectively, river bed height was predicted along the cross sections The values of the deepest bed height is selected maximum scour hole depth Yahagi river in Japan was selected as a case study due to comprehensive and accessible data base A comparison of observed data and predicted values indicate a seasonable agreement between them
کلیدواژهها
نویسندگان
S Pourbakhshian
Faculty member , Department of Civil Engineering
M.R.M Tabatabai
Assistant Prof , Waters Engineering Department
M Pouraminian
S Pourbakhshian Faculty member , Department of Civil EngineeringM.R.M Tabatabai Assistant Prof., Waters Engineering Department
شیوه ارجاع
Pourbakhshian, S and Tabatabai, M.R.M and Pouraminian, M,1391,Stochastic modeling to Prediction of local scour depht on the basis river morphologhical changes in braided river,09th International River Engineering Conference,Ahvaz
ارائهشده در
مجموعه مقالات نهمین سمینار بین المللی مهندسی رودخانه3 بهمن 1391 · اهواز