• Journal of the Korean GEO-environmental Society
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• v.10 no.4
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• pp.5-13
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• 2009

The runoff-reducing facilities using infiltration was considered for the sustainable and sound water management. However, for practical utilization, many problems are attended and therefore effort on improvements are required. In this study, methods of improvement for infiltration facilities proposed by Infiltration-Storage System (ISS) and the effect of runoff reduction were analyzed by hydraulic experimental study. In order to analyze the infiltration characteristics of proposed runoff reduction facilities in this study, it was applied to various rainfall condition and surface material considering development and urbanization influences. As a results of hydraulic model experiment, Infiltration-Storage System (ISS) made addition to effect of reduction by lower layer of accumulative infiltration quantities. And then as rainfall-intensity was increased, accumulative infiltration rates were increased in this study. Thus, Infiltration-Storage system (ISS) was more efficient than existing runoff reduction facilities because of increasing infiltration rate. Such a result was guaranteed application of ISS as runoff-reducing facilities. Therefore, ISS is expected to be capable for practical application if subsequent research for improvements are followed. Additionally, results of this study are expected to provide fundamental research data on infiltration facilities.

• Journal of the Korean Society of Hazard Mitigation
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• v.7 no.4
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• pp.85-95
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• 2007

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.