사면의 기하학적 증폭특성을 고려한 지진시 산사태 예측기술개발 II : 서울지역 지진시 산사태 재해도 작성

초록

Seismically triggered landslides are one of the most damaging hazards associated with earthquakes, especially in Korea includingmany mountain areas. They can not only cause the damage to lives and structures directly, but also cease the operation of the wholesocial systems by making the roads and/or lifelines useless. Therefore, the systematic research on factors affecting the slope stabilityfor earthquake and evaluation method of slope stability considering earthquake induced factors should be needed. In this paper, inorder to visualize the hazard of the landslide by earthquakes, study area is selected for a mountain of Seoul, and hazard maps usingGIS have been used. The displacement by earthquake is evaluated by Newmarkís method and the factor of safety is calculated basedon the concept of the limit equilibrium method and pseudo-static analysis by using amplification factor obtained from geometricalcharacteristics of slope.

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