[H-CG37] [JJ] Active fault and disaster mitigation learned from 2016 Kumamoto earthquake

[HCG37-10] Consideration of existence of active faults in the Reconstruction Plan of Mashiki Town

*Hiroshi Une¹ (1.Geospatial Information Authority of Japan)

Keywords:Reconstruction Plan of Mashiki Town, land use on active fault, coexistence with active fault

The Mashiki Town, utterly devastated by the 2016 Kumamoto Earthquake, established “the Reconstruction Plan of Mashiki Town” in December 2016 aiming to revive from earthquake disaster and reconstruct disaster-proof town. The questionnaire survey to the residents which was carried out in the process of drafting of the plan revealed that a majority of the residents were in fear for the existence of active fault and the occurrence of future earthquake. In parallel with this planning, the City Bureau of Ministry of Land, Infrastructure, Transport and Tourism conducted the research and analysis of the background elements of the damage such as fault and soil condition and the consideration of measures to rebuild disaster-proof town, and provided the results to support the Town. It assumed that at least three east-west active faults run below the town center of the Mashiki Town, and proposed to take special consideration for the land use on active faults from the viewpoint of avoidance of damage risk while implementing land readjusting project in town center. Although concrete land use planning has not started yet, this is a remarkable policy based on fair understanding of the nature of active faults aiming at the coexistence with active faults.