Explosives and Blasting (화약ㆍ발파)
- Volume 13 Issue 4
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- Pages.28-38
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- 1995
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- 1229-9073(pISSN)
On the Future & Present of NTT Cable Tunnel Construction
일본 통신토목설비의 현장과 전망
Abstract
This paper was addressed by fall seminar of society of explosives engineers of Korea. In Japan, total length of cable was 600km and tokyo was 260km and it will extend cable tunnel 5~10km every year in Tokyo. NTT service project has been working as a optic fiber net works and in 2010, it will be done. FIF. FTTH so call fiber to the home for the purpose of multiplicity. For the above project. First, it should be developing auto Non-excavation tech, 2nd developing soil recycling system.
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