| 摘要 |
PROBLEM TO BE SOLVED: To provide construction equipment for a pipe roof which enables the efficient construction of the pipe roof serving as a guide in the jacking of an underground structure in the advance of the underground structure, when an underground passage is constructed by jacking and burying the underground structure in such a manner that the underground structure crosses a section under a track or a road. SOLUTION: An underframe 4 is provided on a cutting edge 3 which is mounted at the opening end of the underground structure 1 in such a manner as to protrude forward from the front lower end of an upper floor of the underground structure 1; a back end of the pipe roof 2 which is composed of a row of a plurality of multi-ground-forepiling pipes 2a is supported in a longitudinally slidable manner on the front part of the underframe 4; and a crosswise moving truck 6 which is equipped with an upward and downward moving platform 7 is arranged on the underframe 4. After the truck 6 is sequentially moved up to the rear side of the pipe 2a, the pipe roof is jacked and constructed by rotating a screw auger 8 in the pipe 2a by means of a rotative driving motor 9 installed on the moving platform, while the moving platform 7 is advanced by means of a jacking jack 10. COPYRIGHT: (C)2006,JPO&NCIPI
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