推進工法の最新の技術動向(<特集>非開削トンネル技術の現状と今後)
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概要
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This paper describes the latest middle-large pipe jacking method, especially on curved drive, long distance drive, deep depth pipe jacking and on non-circular pipe jacking. For curved drive, excavating machine, jacking pipe and jacking transmission material that enables curved jacking are described. For long distance drive, a pipe that has high concrete compressive strength and a method that reduces the friction are described. For deep depth pipe jacking, a backing prevention device, measures taken at the departing pit are described. Lastly, for non-circular pipe jacking method, a closed-face box culvert jacking method that can drive curved and long distance are described.
- 2012-02-01