About the ground surface collapse event near the construction site of the Tokyo outer ring road (Kan-etsu-Tomei)
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- Important notice to customers
- About the ground surface collapse event near the construction site of the Tokyo outer ring road (Kan-etsu-Tomei)
About the ground surface collapse event near the construction site of the Tokyo outer ring road (Kan-etsu-Tomei)
- 1st report (October 18, 2020
- 2nd report (October 19, 2020
- Third report (October 19, 2020
- 4th report (October 22, 2020
- 5th report (October 23, 2020
- 6th report (November 4, 2020
- 7th report (November 4, 2020
- 8th report (November 5, 2020
- 9th report (November 22, 2020
- 10th report (November 25, 2020
- 11th report (November 27, 2020
- 12th report (December 17, 2020
- 第13報（令和2年12月18日）
- 第14報（令和3年1月15日）
Tokyo Gaikan Tunnel Construction Review Committee Expert Committee
- 設立趣意書【PDF：107KB】
- 委員会規約、委員名簿【PDF：112KB】
- 1st (October 19, 2020
- 2nd (October 23, 2020
- 3rd (November 5, 2020
- 4th (November 27, 2020
- 第5回（令和2年12月18日）
About the progress of work and investigation on the surface depression of Chofu City
- Notice of start of investigation (October 23, 2020
- Implementation of road surface cavity survey (November 17, 2020
- Completion of cavity filling work (November 24, 2020
- Implementation of geophysical exploration around the depression (December 1, 2020
- Implementation of road surface cavity survey (December 3, 2020
- Completion of cavity filling work (December 3, 2020
- About the progress of the survey (2020 Reiwa) [PDF: 4.6MB]
- Implementation of geophysical exploration other than around the depression (December 7, 2020
- About the progress of the survey (2020 Reiwa) [PDF: 5.1MB]
- Implementation of geophysical exploration other than around the depression (December 17, 2020
- 調査の進捗状況について（令和2年12月22日）【PDF：5.1MB】
- 調査の進捗状況について（令和2年12月25日）【PDF：27.4MB】
- 路面空洞調査の実施について（令和3年1月8日）
- 調査の進捗状況について（令和3年1月12日）【PDF：27.3MB】
- 調査の進捗状況について（令和3年1月18日）【PDF：4.1MB】
- 空洞充填作業の完了（令和3年1月22日）
- 調査の進捗状況について（令和3年1月27日）【PDF：5.7MB】
About maintenance measures associated with the shutdown of the shield machine
東京外かく環状道路工事現場付近での陥没事象等に関する説明会
About the house interim survey accompanying the Tokyo outer ring road project
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