Japan Society of Civil Engineers 2020 Annual Meeting

Presentation information

第III部門

維持・補修

Chair:Ryota Hashimoto

[III-442] River water inflow into tunnel due to collapse of riverbed above tunnel and countermeasures

〇Masatoshi Abe1, Teruaki Takeuchi1, Tenji Kaneko1 (1.East Japan Railway Company)

Keywords:Tunnel , Sinking, Plastic injection material, Water leakage

目的:河川河床陥没の原因の推定と応急対策及び恒久対策に向けた取り組みを報告する 要旨:可塑性注入材を使用し空洞壁面の崩落の発生を防いだ 結論:トンネルや可塑性充填剤箇所の周辺に空洞とみられる低速度部や高比抵抗部は確認されなかった

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