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PIPE JACKING MACHINE AND PIPE JACKING METHOD
PIPE JACKING MACHINE AND PIPE JACKING METHOD
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机译：顶管机及顶管方法
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摘要
PROBLEM TO BE SOLVED: To provide a pipe jacking machine and a pipe jacking method capable of preventing the length of a preceding body from increasing and improving departure accuracy at the starting time of excavation.;SOLUTION: In a pipe jacking machine pressing embedding pipes into ground by a prime pusher 200 installed in a departure shaft D, a preceding body 100 pressed in the ground through an embedding pipe by the pusher 200 is at least provided with the front shell 102 having a rotary excavating tool 101 at the forward side and a laser beam receiver 400 receiving laser beam from a laser irradiation device 300 installed in the departure shaft D at the rearward side, and the rear shell 103 having a laser beam receiver 400 receiving leaser beam from the laser irradiation device 300.;COPYRIGHT: (C)2004,JPO
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