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강우패턴과 지진계수를 고려한 단양읍 지역 무한사면 안정 해석
이기석 ( Lee Giseok ),김형신 ( Kim Hyeong Sin ),문성우 ( Moon Seoung Woo ),서용석 ( Seo Yong-seok ) 충북대학교 건설기술연구소 2020 建設技術論文集 Vol.39 No.1
In this study, infinite slope stability analyses considering rainfall patterns and seismic coefficients were conducted to find the effects of rainfall characteristics and seismic loads on safety factor of slope. Geotechnical properties were determined by laboratory and in-situ tests, and rainfall patterns were calculated by using Huff’s method. Also, seismic coefficients were determined as recurrence periods of collapse prevention level in consideration of domestic seismic design criteria. As the results of infinite slope stability analysis considering rainfall patterns, unstable areas of Fs ≤ 1.2, compared to entire study area, account for 12.46 % in 1st quartile, 12.47 % in 2nd quartile, 12.49 % in 3rd quartile, and 12.50 % in 4th quartile, respectively. Furthermore, the results of infinite slope stability analysis considering seismic coefficients show that unstable areas of Fs ≤ 1.2, compared to entire study area, account for 12.50 % in no seismic loads, 13.52 % in 500 years period, 13.90 % in 1000 years period, and 14.48 % in 2400 years period, respectively.