- Japan Society of Civil Engineers
- 日本土木史研究発表会論文集 (ISSN:09134107)
- vol.8, pp.113-124, 1988-06-20 (Released:2010-06-15)
This paper describes a history and present state of railway tunnels, based on field surveys and histrical records, taking an example of former Kansei Railway Company (now JR-Kansai main line and its branches). Through this case study, it became clear that the tunnels have been bored to various inside shape and some of them have portals by special individual designs.