令和４年８月９日からの豪雨による青森県鯵ヶ沢町の保育園での避難行動と保育継続

日本海から東北北部に伸びる停滞前線の影響による豪雨で2022年8月9日に青森県鯵ヶ沢町を流れる中村川が氾濫し，鰺ヶ沢町の市街地で1mを超える浸水被害が発生した．町中心部にある保育園は床上0.75ｍの浸水被害を受けたほか，在園中の園児47名はバスと徒歩で近くの小学校へ避難した．避難は避難指示が発令された直後の11時から約30分かけて行われた．被災当日にも代替保育施設の検討が行われ，休園することなく応急保育の後，公民館を利用して保育が継続された．保育園での聞き取りから，避難行動と保育継続の課題を整理した．さらに，保育園周辺の浸水痕跡調査と中村川の洪水氾濫解析から市街地の洪水進行過程を再現した上で，避難経路や避難行動は適切であったかについて検証した．

Due to the heavy rain from August 9, 2022, the Nakamura River, which flows through Ajigasawa Town, Aomori Prefecture, overflowed, causing flood damage exceeding 1 m. A nursery school was flooded up to 0.75m above the floor, and 47 children evacuated to a nearby elementary school by bus and on foot. Evacuation was carried out for about 30 minutes from 11:00 immediately after the evacuation order was issued. Even on the day of the disaster, an alternative nursery school was considered, and after the emergency nursery school, the nursery school was continued using the public hall. Based on interviews at the nursery school, we sorted out the problems of evacuation behavior and childcare continuity. In addition, after reproducing the progress of the flood in the urban area based on the flood trace survey around the nursery school and the flood inundation analysis of the Nakamura River, it was verified whether the evacuation route and evacuation behavior were appropriate.

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