The Effect of Mashhad City Development on Its Flooding During 1941- 2016
نویسندگان
چکیده مقاله:
Impervious surfaces in urban zones, during rainfall, increase the runoff speed and reduce the opportunity for evapotranspiration. This will increase maximum discharge and reduce the time of concentration of flood in urban storm. In this research, the effect of the development of Mashhad on the urban flood has been studied. The EPA SWMM model was used for this study. The studies showed that the surface of Mashhad in 2016 compared to 1941 was 31.5. The results showed that the maximum discharge in 2016 increased to 307, 259 and 177 percent, respectively, compared to 1941, 1976 and 1986. Also, the results showed that despite the increase in the size of the city in 2016 compared to 1941, the time of concentration from 6 hours in 1320 to 4.5 hours in 1395 decreases.
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عنوان ژورنال
دوره 16 شماره 45
صفحات 118- 128
تاریخ انتشار 2019-07
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