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초생대의 유사 저감 효과 모의를 위한 Web 기반 VFSMOD 시스템의 구축
박윤식 ( Park Younshik ),김종건 ( Kim Jonggun ),임경재 ( Lim Kyung Jae ),현재연 ( Hyun Jae Yeon ),신용철 ( Shin Yonhchul ),안재훈 ( Ahn Jaehun ),김기성 ( Kim Ki-sung ) 한국농공학회 2007 한국농공학회 학술대회초록집 Vol.2007 No.-
More focus has been given to the study regarding the Non-Point Source Pollution, such as rainfall, sediment, pesticide, nutrient, and pathogens from urban, forest, and agricultural area, than Point Source Pollution. Muddy water problem has been raised at many areas in Korea. To solve the muddy water problem, many studies have been performed in not only Korea but also other countries using hydraulic structures such as sediment basin, erosion control dam, and others. Among these, the vegetative filter strip has been increasingly used because of its environment-friendly aspect. Vegetative filter strip is designed to reduce soil erosion and sediment discharges from the edge of the field due to rainfall-driven runoff. However, sometimes it is not possible to expect various design storm events in field experiment. Thus, the VFSMOD was selected in this study to develop prototype version of the Web GIS-based VFSMOD system (http://www.EnvSys.co.kr/~vfsmod) because sometimes it is difficult to prepare input dataset for the desktop version of the VFSMOD system. The Web GIS-based VFSMOD system uses the VFSMOD as core engines to simulate hydrology and sediment transport through vegetative filter strips. In the prototype Web GIS-based VFSMOD system, various database were used to help users parameterize the source and filter strip areas. In the prototype Web GIS-based VFSMOD system, Web GIS soil information system was developed and provided for ease selection of spatial location of interest and retrieval of corresponding soil properties for the Web GIS-based VFSMOD system. In this study, trapping efficiency was analyzed with the area which is located on edge of the stream. The trapping efficiency was various as the width of filter strip with rainfall event such as rainfall return period and rainfall duration. In this study area, filter strip which is at least 3.0m was needed for 80% of trapping efficiency to every rainfall condition, and filter strip which is at least 1.2m was needed for 50% of trapping efficiency to every rainfall condition.
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