Paper Title:
Runoff Quantity Dynamic from an Extensive Green Roof during Individual Rainstorms
  Abstract

This study evaluates the influence of an extensive green roof on runoff quantity dynamic during individual rainstorms in Central China. Controlled experiments on a simulated extensive green-roof plot were carried out firstly to produce a unit hydrograph (UH) by the methods of S-curve linearization treatment and curve fitting. Then in situ tests were conducted to compare runoff quantity per minute from the green roof plot and a conventional roof plot to verify the obtained UH and compare their runoff quantity dynamic during two rain storms in the year of 2009.The obtained UH is able to predict accurately peak flows and runoff volumes for any rain input. When the initial water content of the substrate was dry, the 7 cm thick green roof can delay the runoff initiating for nearly 8 minutes, lower runoff peak and volume by about 50% compared with conventional roof during a 10.1mm rainstorm on 7 June; and even when the substrate was wet, the extensive green roof can detain runoff effectively by 129 min longer than conventional roof and thus lower the peak flow of runoff by 43% during a 6.3 mm rainstorm on 12 March.

  Info
Periodical
Advanced Materials Research (Volumes 250-253)
Edited by
Guangfan Li, Yong Huang and Chaohe Chen
Pages
3429-3435
DOI
10.4028/www.scientific.net/AMR.250-253.3429
Citation
J. J. Ye, H. Zhang, S. X. Yu, S. B. Guo, W. N. Xu, H. W. Li, "Runoff Quantity Dynamic from an Extensive Green Roof during Individual Rainstorms", Advanced Materials Research, Vols. 250-253, pp. 3429-3435, 2011
Online since
May 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Hai Yan Li, Li Tao Yue
Abstract:Taking a roof in Shanghai for example, through the comparison of the relationship of rainfall and SS load in a single rainfall runoff...
5308
Authors: Pei Qing Xiao, Wen Yi Yao, Chang Gao Wang
Chapter 1: Hydrology and Water Resources
Abstract:Effect of shrub on runoff and sediment yield and its hydraulic mechanism of shrub were studied under rainfall intensities of 45, 87 and...
141
Authors: Qiang He, Yue Zhi, Wen Tao Yan, Shu Ming Wang
Chapter 5: Hydrology and Water Resources Engineering
Abstract:The storm runoff model in mountain city, based on hydrology, hydraulics and the watershed spatial data is targeted at the features of large...
762
Authors: Ting He, Fang Wang
Chapter 12: Hydrology and Water Resources Engineering
Abstract:This Study Takes Bengbu Segment as an Example, Analyzes the Aquatic Organisms Evolution, Rainfall Process, Runoff Process, Water Quality, and...
2780