| 摘要 |
<p>PURPOSE:To easily remove a useless previously buried pipe by filling a filling material in the cavity made after the removal of the previously buried pipe after inserting a drawing wire in the previously buried pipe, winding the wire, drawing it with the previously buried pipe and collecting it. CONSTITUTION:It is a removal method of a useless previously buried pipe 4, and a main work pit 5 and a sub work pit 8 are excavated on the both side positions of the previously buried pipe 4 and a drawing wire 7 is inserted into the previously buried pipe from a winch 6 on the ground side of the main work pit 5. The top edge of this wire 7 is engaged to a pipe edge on the side of the sub work pit 8 and the wire is wound off so that it is drawn with the previously buried pipe 4 and collected in such a way of winding it around the winch 6. Afterward, a filling material such as mortar, etc., is filled in the cavity made after the removal of this previously buried pipe 4. Consequently, it is possible to easily remove a useless buried pipe without excavating a road. Additionally, there is made no cavity underground and no pit is made.</p> |
