چکیده مقاله
Nowadays, flood is one of the most impliticated events that endangers human life and wealth more than any other natural disaster 1 Science flood has always caused many problems in most parts of the world invetigation of different time parameters in flood hydrographs of the same regions makes hydrologists able to simulate it in order to plan for flood destructive effects decrease these time parameters are such as peak, lag and concentration time there are some formula for lag time estimation as a variable depending on flood rate in each catchment 10 it is possible to study maximum flood discharge, flood bollume and the rate of catchment storage by investigating observed hydrograph of catchment It also has an important role in planning the dimension of water works In fact making use of hydrographs and determining concentration ,lag and peak times is one of the main and key required parameters in hydrologic analysis 13 It is essential to estimate time parameters such as peak time and also peak discharge to prevent flood and its risks 12 using hydrograph and the corresponding hyetograph observed events analysis is one of the important methods in determining time parameters of hydrograph 2 which are mostly used in spillway dimension and flood routing The estimation of fazelabro channels dimension and determining the dimensions of flood control works If there is any error in concentration time estimation, It causes problems in flood design and also 75 percent 75% error in maximum discharge 7,8
کلیدواژهها
نویسندگان
Maryam zolfaghari
PhD student in watershed management, Science & Research Branch Islamic Azad University Tehran
Mohammad mahdavi
PhD in Hydrology, Faculty of Natural Resources, University of Tehran
Mohammad Reza Ghanbarpour
PhD in water recourses management Faculty of Natural Resources, University of Mazandaran
Mahmood Habibnezhad
PhD in Hydrology, Faculty of Natural Resources, University of Mazandaran
شیوه ارجاع
zolfaghari, Maryam and mahdavi, Mohammad and Ghanbarpour, Mohammad Reza and Habibnezhad, Mahmood,1388,Comparative investigation of different time parameters of flood hydrograph with empirical methods and hydrograph analysis (case tudy:Neka,Karaj and Kasilian,Iran).,08th International River Engineering Conference ,Ahvaz
ارائهشده در
مجموعه مقالات هشتمین سمینار بین المللی مهندسی رودخانه6 بهمن 1388 · اهواز