| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a joint finishing method for small-diameter propulsion pipes capable of sealing all of the joint parts with a joint filler at the same time, and effectively preventing the occurrence of water leakage due to corrosion of a collar after construction of a pipeline using small-diameter propulsion pipes inside which people can not enter. SOLUTION: Small-diameter propulsion pipes 1 provided with conduit pipes 2 along an axial direction are buried in the ground to form a pipeline in such a manner that the conduit pipes are connected successively and communicated with joint spaces A formed at the joint parts of the propulsion pipes 1. Then, a sealing material 13 is inserted in the pipeline, and airbags 15 provided at a pitch corresponding to the intervals in the axial direction of the joint spaces A are inflated with the injection of compressed air to seal the internal circumference of each joint spaces. In this state, a joint filler is fed and filled in each joint space A through the conduit pipe, and after the joint filler is solidified, the airbags 15 are contracted to remove the sealing material 13.</p> |
