Like Mr. Hanada in bowling, Mr. Shoichi Sato, who was a famous tunnel man in the Seikan Tunnel, also came to Kyushu.
I hear that now that the 53km of the Seikan Tunnel, the world's largest undersea tunnel, has been dug out, the only remaining project is the 235km Japan-Korea Undersea Tunnel.
Mr. Satokin (Shoichi Sato), who was a master of side dump loaders in the Seikan Tunnel, was able to carry it and board Karatsu (actually, a long horizontal boring machine, side dump loader, compressor, etc. that was sold at auction from the Seikan Tunnel. Heavy equipment was carried by ship from the Tsugaru Straits to the Tsugaru Straits).
Based on a geological survey conducted over five years from 20, a Japan-Korea tunnel comparison route was drawn, and a sloping shaft base (about XNUMX square meters) was completed in Karatsu, Saga Prefecture.
The entrance of the inclined shaft opens, the pier, rails, and winches are installed, and it is finally Satkin's turn.
He dug a total of 150m of inclined shafts, XNUMXm for the first phase construction and XNUMXm for the second phase construction, without any accident. (Currently, the third phase of construction XNUMXm is completed and the inclined shaft length is about XNUMXm. The target inclined shaft length is XNUMXm.)
In addition, the biggest issue of the above-mentioned topographical geological survey is the geological survey of the deep seafloor, including the unconsolidated sedimentary layer that extends over 500 m below the seafloor of the Tsushima Strait. Sonic exploration (single and multi-channel) was carried out for XNUMX km.
Mr. Yuzo Takeuchi, who was the chief of the Kaikyo Line between Ao / Hako and Kyushu / Shikoku, gave guidance behind this.Mr. Takeuchi was Deputy Director Ryuhi at the time of the Seikan Tunnel flood accident.
In addition, the design and remodeling of the research vessel (Jeongan Maru 150 tons) was fully taken care of by the Takeishi engineer in Hakodate.
Mr. Takeuchi is the matchmaker of the eldest son of a Takeishi engineer because of the sound wave exploration by such a research vessel.
Also, in surveying and architecture, I was taken care of by architect Kawase, including surveyor Shintani in Hokkaido.
In particular, the Iki Suido (30km sea area from Karatsu area in Saga prefecture to Iki area in Nagasaki prefecture) was the highlight of the survey, which was the second light wave survey in Japan after the Seikan tunnel.
Everyone really cooperated with the lunch box.With the passion that the Japan-Korea tunnel will be next to the Seikan tunnel!