STUDY ON EFFECTS OF GEOGRAPHY AND SOIL CONDITIONS ON BUSINESS CONTINUITY OF PUBLIC FACILITIES

– Nagaoka City of The Mid Niigata Prefecture Earthquake in 2004 –

Abstract

This paper studies the recovery process of damaged public facilities in the Mid Niigata Prefecture Earthquake in 2004 focused on the geography and local soil conditions as one of the major factors based on the published data and questionnaires offered by Nagaoka city. As a result of the investigation, following features are made clear.
1) The facilities located in the areas of slope failure and liquefactions shows longer recovery time compared with those of undamaged areas.
2) The recovery time of public facilities correlates with the sea level and land dip and takes longer time proportional to these factors, which implies the effects of lifeline systems and the difficulty of accessibility.