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초지(草地)의 지표면(地表面) 흐름을 추적하기 위한 Kinematic Wave Model의 개발(II) -포장실험과 모형의 응용-
최종대 ( Choi Joong Dae ),( W. L. Magette ),최레환 ( Choi Ye Hwan ),류능환 ( Ryu Neung Hwan ) 한국농공학회 1993 韓國農工學會誌 : 전원과 자원 Vol.35 No.3
Runoff simulation tests to investigate the flow mechanics of nonsuomerged overland flow in a natural grass intervening land system were conducted and a modified kinematic wave overland runoff model developed by Choi et al. (1993) was verified. Nonhomogeneity and heterogeneity of the soil, slope, local topography, infiltration, grass density, and the density and activity of the soil microbes and wild animals were the major factors affecting the flow. Streamlines were disturbed by grass stems and small concentrated flows due to the disturbed streamlines and local topography were observed a lot. Relatively larger concentrated flows were observed where bundles of grass were dominant than where individual grasses were growing. Predicted hydrographs were agreed very well with measured hydrographs. Since the modified model considers grass density in computing flow depth and hydraulic radius, it can be better than existing kinematic wave model if it were used to route nonpoint source pollutant attenuation processes in many grass intervening land system.