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김만일,배두원,김종태,채병곤,정교철,Kim, Man-Il,Bae, Du-Won,Kim, Jong-Tae,Chae, Byung-Gon,Jeong, Gyo-Cheol 대한지질공학회 2007 지질공학 Vol.17 No.2
매년 강우로 인해 발생되는 사면파괴는 많은 재산피해와 인명피해를 발생시키고 있다. 사면재해로부터의 피해저감을 위해 인간의 생활권과 인접한 사면에 대한 지속적인 관리를 통해 이들의 안정성 검토와 보강 대책이 요구된다. 연구지역은 편마암으로 이루어진 암반사면으로써 단층작용으로 인해 대규모 절리군이 형성되어 있는 풍화암 내지 연암의 풍화 특성을 보여준다. 조사사면을 자연사면과 절취사면으로 구분하여 현장자료를 검토한 결과, 자연사면에서는 주 절리군이 형성된 4개 지점에서 평면파괴와 쐐기파괴 가능성이 우세하였으며, 절취사면의 경우 8개 지점에서 쐐기파괴 발생 가능성이 높게 나타났다. 또한 SLIDE 2D에 적용해 이들 사면의 최소안전율에 대한 수치해석 결과에서는 자연사면보다 절취사면의 안정성이 비교적 취약한 것으로 분석되었다. Slope failure that is occurred by rainfall generates a lot of property damages and loss of lives. Slope stability management and reinforcement countermeasure can be attained through continuous monitoring about various slope types that adjoin in human's life for reducing slope failure from natural and artificial cut slope hazards. The study area is rock slope that is consisted of gneiss, and large scale joint set is ranging by fault activity. This rock mass is exposed during long period and has lithological weathering property of weathered rock or soft rock. In-situ investigation carried out after divide by natural slope and cut slope. As a result, the natural slope appeared to high possibility of planar failure and wedge failure in few joint points that main joint set is formed. On the other hand, slope failure conformation in cut slope was superior only wedge failure occurrence possibility in eight joint points. In result of numerical analysis using SLIDE 2D, the minimum safety factor was analyzed slope stability for cut slope relatively low than natural slope in this study.
김종태,배두원,김만일,정교철 7개 국립대학교 환경연구논문집 공동발행 위원회 2005 공업기술연구 Vol.5 No.-
To study the relations of underground/surface-water exhaustion and excessive pumping, we have analyzed river, geological characteristics, recharge rate of rainfall and underground-water level. The ground water recharge rate from the SCS-CN analysis is 8.4%, and the recharge is computed in 6.4111 x 10^(5)㎥/y. This results mean that a big drawdown in observation holes may be occurred by excessive pumping. From in-situ hydraulic conductivity test, hydraulic conductivity in basement of the study area is calculated in 7.996 x 10^(-6)-2.067 x 10^(-6)m/sec. The underground/surface-water in the study area with small underground-water recharge rate will be exhausted by long time pumping.