| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a long-distance pipe jacking method capable of realizing ultra-long propulsion. SOLUTION: In this method of semi-shield construction, propulsive pipes 15 are buried gradually into the ground as being successively extended while placing a seal-shield machine 14 as the head. A plurality of the filler holes 20 of a tail void grout are formed around porous type exclusive pipes 19 connected to the propulsive pipes 15 at that time, and the tail void grout is infected uniformly to tail voids 18 formed to the outer circumferences of the propulsive pipes 15 at pressure, thus reducing frictional resistance among the outer circumferential surfaces of the propulsive pipes 15 and a bedrock, then allowing the ultra-long propulsion of the propulsive pipes 15.</p> |
