Abstract
The new Ishioka Tunnel project (in the second work section) involves the construction of a water conveyance tunnel with an inner diameter of 3.5 m by the slurry shield tunneling method. The project has two characteristics, long-distance excavation and quick construction. The tunnel has a length of 5,000 m without any intermediate shafts. This is one of Japan’s leading long-distance tunnelling projects. Construction including design is carried out quickly over a period of 36 months. Permanent excavation was started in late April 2004. A highest rate of monthly shield advance of 500.85 m was recorded. Construction was carried out rapidly at an average rate of monthly shield advance of 338 m, higher than 320 m as planned. The shield reached the reception shaft approximately two months earlier than scheduled. This paper provides an outline of construction and describes the major techniques applied. (A) This paper was presented at Safety in the underground space - Proceedings of the ITA-AITES 2006 World Tunnel Congress and the 32nd ITA General Assembly, Seoul, Korea, 22-27 April 2006. For the covering abstract see ITRD E129148. “Reprinted with permission from Elsevier”.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
