RE-LAYING METHOD FOR CONDUIT

PROBLEM TO BE SOLVED: To facilitate construction work for laying a new conduit while an existing buried conduit is crushed by a crushing head. SOLUTION: The crushing head 16 is provided on the lower end of a post 15 reaching from the ground the position of the existing conduit 11 buried in the groun...

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Bibliographische Detailangaben
Hauptverfasser:	IWASAKI MASAHIRO, TENMA KATSUTOSHI
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING DREDGING EARTH DRILLING ENGINEERING ELEMENTS AND UNITS FIXED CONSTRUCTIONS FOUNDATIONS GALLERIES GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING HYDRAULIC ENGINEERING JOINTS OR FITTINGS FOR PIPES LARGE UNDERGROUND CHAMBERS LIGHTING MEANS FOR THERMAL INSULATION IN GENERAL MECHANICAL ENGINEERING MINING PIPES SHAFTS SOIL SHIFTING SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING THERMAL INSULATION IN GENERAL TUNNELS WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To facilitate construction work for laying a new conduit while an existing buried conduit is crushed by a crushing head. SOLUTION: The crushing head 16 is provided on the lower end of a post 15 reaching from the ground the position of the existing conduit 11 buried in the ground. The post 15 and the crushing head 16 are moved along the laying direction of the existing conduit 11, whereby sediment part reaching the existing conduit 11 from the ground is cut open, and while the existing conduit 11 is crushed by the crushing head 16, the crushed existing conduit 11 is replaced with a new conduit 21. Thus, the new conduit 21 can be laid through a part 22 of sediment cut open by the post 15. COPYRIGHT: (C)2008,JPO&INPIT