Citation

Sakamoto J, 坂本 淳. J. Jpn. Soc. Civil Eng. Ser. F6 Saf. Probl. 2019; 75(2): I_119-I_125.

Vernacular Title

津波リスクの見直しを受けた居住誘導の課題―高知市を対象としたケーススタディ―

Copyright

(Copyright © 2019, Japan Society of Civil Engineers)

DOI

10.2208/jscejsp.75.2_I_119

PMID

unavailable

Abstract

The estimated tsunami inundation area in the coastal region was changed after the revision of Tsunami prevention region development law, 2012. By contrast, since aging society and population decline have been more serious in local cities, it is necessary to promote the concentration of urban facilities to maintain the efficiency of the city. The objective of this study was to discuss how to implement residential relocation measures on the basis of the survey of resident's consciousness. A case study city is Kochi, where most of the central area is estimated to be a tsunami inundation area. First of all, resident's consciousness of the revision of hazard-map from the perspective of disaster risk and city planning was analyzed. Then, the resident's consciousness of disaster risk from the viewpoint of location and building condition was examined. Furthermore, the factor for choosing housing and the awareness of public project for disaster prevention were considered. Result clarified that it is urgent to implement a disaster prevention measure in the estimated tsunami inundation area as soon as possible to encourage citizens to live in the central city area.

2012年施行の津波防災地域づくり法を受けて太平洋沿岸地域の津波浸水想定は大きく見直され，これまで浸水しないと想定されていた地域で新たな津波防災対策が必要なことが認識された．一方，地方では本格的な高齢化・人口減少問題が深刻化しており，コンパクトかつ利便性の高い都市形成が急務とされている．

　本研究では，津波リスクの見直しにより中心市街地の広範囲の浸水が想定される高知市を対象とし，住民意識調査に基づき居住誘導に向けた課題を考察する．まず，見直しに対する意識について，災害リスク，まちづくりの観点から把握する．次に，住民が防災面で安心と考える要因について，場所や建築条件から解明する．さらに今後の居住選択で重要視する点と防災対策事業の認知状況を明らかにする．その結果，高知市の方針である将来のまちなか居住を促進させていくためには，浸水想定区域内の防災対策を早期に行う必要があることがわかった．

Language: ja

Keywords

consciousness of disaster risk; consciousness of tsunami disaster prevention measures; estimated tsunami inundation area; questionnaire survey; tsunami hazard-map