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플로우 펌프기법을 이용한 포천지역 화강 풍화토의 함수특성곡선
이강일,이준용,백원진,Lee, Kang-Il,Lee, Joon-Yong,Back, Won-Jin 한국농공학회 2009 한국농공학회논문집 Vol.51 No.1
Flow pump technique was used in order to determine the soil-water characteristic curve of weathered granite soils in Pocheon area. This technique enables measurement to be more convenient and accurate as it is based on the CU condition of triaxial compression test. Besides, it is also able to measure dry and moisture curves continuously since the test is controled by means of a computer automatically. In this study, not only a hydraulic conductivity of weathered granite soils at fully saturated state in Pocheon area, but also a soil-water characteristic curve throughout unsaturate flow tests were determined. In addition, Brooks and Corey's model and Genuchten's model were used to simulate the soil-water characteristic curve. On the basis of the simulation an unsaturate hydraulic conductivity was predicted.
위락시설지역의 초기세척현상과 초기 강우-유출고 저류에 따른 저감효율 분석
정재운 ( Jae Woon Jung ),박하나 ( Ha Na Park ),최동호 ( Dong Ho Choi ),백상수 ( Sang Soo Baek ),윤광식 ( Kwang Sik Yoon ),백원진 ( Won Jin Back ),범진아 ( Jin A Beam ),임병진 ( Byung Jin Lim ) 한국물환경학회 2013 한국물환경학회지 Vol.29 No.5
Nonpoint source pollution characteristics of recreation park was investigated. Runoff ratio of recreation park ranged 23-57%, which was lower than other urban area since impervious area was less than 37%. The average BOD, COD, TOC, SS, T-N, T-P, were 14.09, 32.86, 12.19, 121.51, 7.78 and 0.72 mg/L, respectively. First flush of recreation park was analyzed by normalized cumulative load - volume curve and mass first flush ratio(MFFn), MFF10 for BOD, COD, SS, T-P, T-N, TOC were 2.90, 1.59, 2.15, 2.74, 2.60, and 1.59, respectively. Observed data showed that 62% of pollutant could be removed by storaging 5 mm rainfall-runoff and even 3 mm depth could store up to 50% of pollutant in runoff.