| 摘要 |
<p>PURPOSE:To reduce the applied quantity of the earth to be refilled and lighten the field covering work of coupling parts by bonding buried pipes in a ditch drilled by means of a meeting place drilling method, applying anticorrosive coating to the outer surface of the coupling part and filling foaming resin around the coupling part. CONSTITUTION:A ditch 6 is drilled at the coupling parts of buried pipes 2 by a meeting place drilling method, and the buried pipes 2 are connected to each other in the ditch 6 by welding. Anticorrosive coating 8 of inorganic zinc or the like is then applied to the outer surface of the coupling part in order to protect the coupling part from corrosion. Foaming resin material made of foaming styrene and the like is further injected to the bottom part of the ditch 6 and foamed to cover around the buried pipes 2 with foaming resin 7. The upper part of the foaming resin 7 is backfilled with the earth generated by drilling the ditch for a meeting place. As a result, the applied quantity of the earth to be refilled can be reduced, as well as the field covering work of the coupling part can be lightened.</p> |
