A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Analysis Models of Storm Runoff Volumes from Small Watershed in Chongqing Metropolitan Area
The storm runoff model in mountain city, based on hydrology, hydraulics and the watershed spatial data is targeted at the features of large slope of land surface and fast speed of runoff-contribution & flow-concentration in mountain city, is of great significance to achieve the goal of making an analog experiment on the processing of urban storm runoff, to locate the inland inundation spot and predict the time of the water withdrawal as well as manage and utilize the water volume and quality of the storm runoff. As a result, we’ve developed a distributed storm runoff model in small watershed in the mountain city on the basis of GIS platform. This model has been applied for analyzing the storm runoff (twice) in Panxi River Valley in North New Zone of Chongqing. The results showed that the Nash-Sutcliffe coefficient, Ens is 0.56; and the relative error is 11.8%, compared the simulated result with the actual measurements 2010/6/7; the Ens is 0.76,; and the relative error is 8.82%, compared the simulated result with the actual measurements 2010/7/4, it showed that the simulated result is of high precision with the model. According to the parameter sensitivity analysis, the most sensitive parameters of the storm runoff model are the width of subcatchment, slope and impermeable area rate.
Analysis Models of Storm Runoff Volumes from Small Watershed in Chongqing Metropolitan Area
The storm runoff model in mountain city, based on hydrology, hydraulics and the watershed spatial data is targeted at the features of large slope of land surface and fast speed of runoff-contribution & flow-concentration in mountain city, is of great significance to achieve the goal of making an analog experiment on the processing of urban storm runoff, to locate the inland inundation spot and predict the time of the water withdrawal as well as manage and utilize the water volume and quality of the storm runoff. As a result, we’ve developed a distributed storm runoff model in small watershed in the mountain city on the basis of GIS platform. This model has been applied for analyzing the storm runoff (twice) in Panxi River Valley in North New Zone of Chongqing. The results showed that the Nash-Sutcliffe coefficient, Ens is 0.56; and the relative error is 11.8%, compared the simulated result with the actual measurements 2010/6/7; the Ens is 0.76,; and the relative error is 8.82%, compared the simulated result with the actual measurements 2010/7/4, it showed that the simulated result is of high precision with the model. According to the parameter sensitivity analysis, the most sensitive parameters of the storm runoff model are the width of subcatchment, slope and impermeable area rate.
Analysis Models of Storm Runoff Volumes from Small Watershed in Chongqing Metropolitan Area
He, Qiang (author) / Zhi, Yue (author) / Yan, Wen-Tao (author) / Wang, Shu-Ming (author)
2012
7 Seiten
Conference paper
English
Storm Runoff Volumes from Effective Hydraulic Conductivity
| British Library Conference Proceedings | 1995
Storm Magnitude and Watershed Size on Runoff Nonlinearity
| British Library Conference Proceedings | 2013
Study of Some Effects of Urbanization on Storm Runoff From A Small Watershed
| BASE | 2018
Water Quality Prediction Models for Storm Water Runoff in an Urban Watershed
| British Library Conference Proceedings | 2011