【ゆっくり解説】日本史上屈指の難工事「青函トンネル」【土木】

This video introduces the history and technology behind the construction of the Seikan Tunnel, one of Japan's most challenging construction projects. Seikan Tunnel (As of October 8th, our channel surpassed 10,000 subscribers! Thank you for sharing, even though it's a niche genre!) Update: November 20, 2020 The situation has changed considerably since the video was posted. It's time to hold off on traveling for a while! [References] https://ja.wikipedia.org/wiki/Hokkaid... http://ktymtskz.my.coocan.jp/K/tunnel... https://www.huffingtonpost.jp/2017/03... https://ja.wikipedia.org/wiki/Seikan_... http://w01.tp1.jp/~a343530498/teta/te... https://jcmanet.or.jp/bunken/wp-conte... https://www.waterfront.or.jp/ https:/ /grandgiken.co.jp/s/jiban.html https://www.jamstec.go.jp/j/about/pre... http://sekigin.jp/02infra/railroad/hi... https://ja.wikipedia.org/wiki/Toya_Ma... https://librarytaisei.jp/works/vol017... https://ja.wikipedia.org/wiki/Kuroshi...) http://cvv.jp/CVV2/dobokutekakkoii/se...