著者
谷井 敬春 廣田 政矢 菊地 裕一 釜谷 薫幸 高橋 浩
出版者
Japan Society of Civil Engineers
雑誌
トンネル工学研究発表会論文・報告集 (ISSN:18849091)
巻号頁・発行日
vol.12, pp.297-302, 2002

A large-scale collapse occurred when the face reached about 900m point from the east portal. Soil from collapse containing cobble gravels became an avalanche with a large amount of water, and has surged to the portal. Ground surface of 130m from collapse point was caving like Crater. These was no human damage and a little material damage though it was such a huge disaster. Countermeasures are as follows, caving area was restored with air-mortar, boring was done for drainage from the tunnel, grouting was done right under the collapse area. The tunneling work was completed from the record-breaking collapse two years later.

言及状況

外部データベース (DOI)

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@FanTaiyo 都市型NATMを大規模に採用する事は今ではあまりない気がします。記憶にあるNATMの低土被りで落ちた事例は数年前の圏央道山口トンネルくらいしかないなぁ。山岳トンネルの事例ですごいと思ったのはこれ。https://t.co/pjmPGO9Erh 水みち怖い。

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