| 摘要 |
<p>PROBLEM TO BE SOLVED: To easily tear a buried resin pipe and draw in a renewed pipe. SOLUTION: In a construction method for non-open-cut replacement of a buried resin pipe, both end parts of the buried resin pipe A in a range of replacement are respectively exposed in separate pits D1, D2, a tearing tool 28 capable of enlarging and deforming while tearing a pipe wall along a pipe longitudinal direction is inserted from the end part of the buried resin pipe exposed in the one pit D2, the tearing tool is pulled to a side of the other pit D1 through an inside of the buried resin pipe, and the renewed pipe B connected to a back end side of the tearing tool is drawn into a burying trace of the buried resin pipe while tearing the buried resin pipe in a diameter direction along the pipe longitudinal direction without opening and cutting. The buried resin pipe is locked in the one pit from the pipe longitudinal direction and the tearing tool is pulled.</p> |
