都市および周辺地域における地盤災害予測とハザードマッピングに関する研究平成16年度報告 ; Geo-disaster Prediction and Geo-hazard Mapping in Urban and Surrounding Areas Progress Report in FY 2004

本研究は，地震時液状化，宅地造成地盤崩壊，人工・自然斜面崩壊などの地盤災害に対する都市域の脆弱性診断技術と危険度評価技術の高度化, 発生場の時空的予測技術の開発，地盤基礎構造物の性能向上技術の開発を目的とする。平成16年度のとりまとめとして，本論文では，河川堤防の耐震性能，風化花崗岩斜面内での地下水浸透挙動，表層土のクリープ挙動，2004年中越地震によって発生した斜面移動現象の発生場についてとりまとめた． ; Urban development rapidly expanding from lowlands to surrounding hills and mountains poses increasing risks for geo-hazards, including liquefaction during earthquakes, and failure of artificial and natural slopes. In order to develop methodologies for assessing vulnerability to these hazards and for making spatial and temporal predictions, and to develop technologies for improving the performance of geotechnical works in urban areas, we studied: (1) seismic performance of river embankments; (2) water infiltration behavior and creep movement of decomposed granite slopes; and (3) landslides triggered in residential areas in valley fills and hills by the 2004 Chuetsu earthquake. ; 本研究は，地震時液状化，宅地造成地盤崩壊，人工・自然斜面崩壊などの地盤災害に対する都市域の脆弱性診断技術と危険度評価技術の高度化,発生場の時空的予測技術の開発，地盤基礎構造物の性能向上技術の開発を目的とする。平成16年度のとりまとめとして，本論文では，河川堤防の耐震性能，風化花崗岩斜面内での地下水浸透挙動，表層土のクリープ挙動，2004年中越地震によって発生した斜面移動現象の発生場についてとりまとめた． ; Urban development rapidly expanding from lowlands to surrounding hills and mountains poses increasing risks for geo-hazards, including liquefaction during earthquakes, and failure of artificial and natural slopes. In order to develop methodologies for assessing vulnerability to these hazards and for making spatial and temporal predictions, and to develop technologies for improving the performance of geotechnical works in urban areas, we studied: (1) seismic performance of river embankments; (2) water infiltration behavior and creep movement of decomposed granite slopes; and (3) landslides triggered in residential areas in valley fills and hills by the 2004 Chuetsu earthquake.