REAMING TOOL AND NON-CUTTING PIPE BURYING METHOD USING IT

摘要

PROBLEM TO BE SOLVED: To provide a reaming tool and a non-cutting pipe burying method using the tool to facilitate laying work of a pipe, following pre-reaming work before laying the pipe by using the reaming tool while retracting a propulsion rod excavating a drift in a non-cutting manner.

SOLUTION: The reaming tool is detachably fixed to a relay rod connected to the propulsion rod in a manner of being externally fitted to the relay rod. The reaming tool having a through hole part which is externally fitted to the relay rod is divided into a plurality of parts in a connectable manner. A binding means is provided at a connection part between the relay rod and the reaming tool for binding the reaming tool not to slide along the relay rod.

COPYRIGHT: (C)2007,JPO&INPIT