EXCAVATION AND PIPE-JACKING APPARATUS

• Main Authors: HAYASHI NOBORU, NAGAOKA TAKASHI, SHIMIZU NOBUAKI, TAKAMURA KEIICHI, KAMIO MASAHIRO, KASUYA TETSUYUKI, SAITO MASAHARU, YAMAMOTO YOSHIHISA, KATO MAKOTO, HAGIWARA HIDEO, KODAIRA SADATADA, BANDO EIGO, TSURUTA KOICHI, KASUYA TARO, TAKEUCHI TAKU, SAITO HIROSHI, MURAKAMI YOSHIHIKO, YOSHIKAWA TADASHI
• Format: Patent
• Language: English
• Published: 16.06.2005
• Edition: 7
• Subjects: EARTH DRILLING; FIXED CONSTRUCTIONS; GALLERIES; LARGE UNDERGROUND CHAMBERS; MINING; SHAFTS; TUNNELS

PROBLEM TO BE SOLVED: To provide an excavation and pipe-jacking apparatus which can optimize the amount of in-side overexcavation and the amount of out-side overexcavation in curved work-execution, which can adapt to a small diameter, and which can reduce costs. SOLUTION: This excavation and pipe-jacking apparatus is used for laying a buried pipe 1 in ground. The excavation and pipe-jacking apparatus is equipped with a leading pipe body 3 wherein a motor 13 for driving a cutter and the like are internally mounted, a cutter head 4 which is annexed in such a manner that a rotating axis O2 almost corresponds to the axis O of the leading pipe body 3, and an outer cylinder 2 which is connected to the leading end of the buried pipe 1. An outside diameter of the leading pipe body 3 is set smaller than that of the buried pipe 1, and an outside diameter of the outer cylinder 2 is set almost equal to that of the buried pipe 1. The leading body 3 is stored in the state of being eccentric with respect to the outer cylinder 2, so that the cutter head 4 can be protruded from the leading end of the outside cylinder 1. COPYRIGHT: (C)2005,JPO&NCIPI