| 摘要 |
<p>PROBLEM TO BE SOLVED: To improve execution work efficiency. SOLUTION: A preceding pipe body 10 is immersed in an excavating groove 2 filled with a stabilizing liquid B1, a partition wall 30 is arranged in a lengthwise directional intermediate position of the preceding pipe body 10, a base end side first solidifying object area 31 of the preceding pipe body is partitioned, a tip part of the preceding pipe body 30 is positioned on the succeeding pipe body arranging side of the partition wall 30, solidification of the first solidifying object area 31 is started thereafter, and while pertforming this solidification, a process of excavating a succeeding excavating groove 2A on the succeeding pipe body 100 arranging side, an immersing process of a succeeding pipe body 100 in the succeeding excavating groove 2A, a connecting process of the succeeding pipe body 100 and the preceding pipe body 10 and a solidifying process in the succeeding excavating groove 2A are successively performed.</p> |
