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An Experimental Study on Runoff Reducing Effect of Infiltration-Storage System due to Rainfall Intensity  

Song, Jai-Woo (홍익대학교 토목공학과)
Im, Jang-Hyuk (홍익대학교 토목공학과)
Publication Information
Journal of the Korean Society of Hazard Mitigation / v.7, no.4, 2007 , pp. 85-95 More about this Journal
Abstract
The variation of hydraulic and hydrologic aspect of urban area according to the strongly seasonal variation of rainfall and the increment of urbanization has caused the runoff variation and increased the flood damage, and thus made a difficulty to manage water resources in urban area. Recently, as a part of efforts to resolve these problems, the facilities for reducing runoff increasing due to urbanization have a tendency to install in our country. In this study, more effective Infiltration-Storage System(ISS) is proposed and its reducing effect is analyzed by hydraulic experimental study. The infiltration characteristics of runoff reduction facilities are examined as varying artificial rainfall and a material of infiltration layers being able to consider the influence of urban development. As a result of comparison of infiltration rate of the upper and lower parts, the infiltration rate in the lower part is larger than that of the upper part. Thus, the ISS is more available than existing runoff reduction facilities. Results obtained in this study can be provided fundamental data for improvement of existing runoff reduction facilities and practical use of ISS.
Keywords
runoff reduction facilities; Infiltration-Storage System; artificial rainfall facilities;
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