A OPTIMALLY STEEL PIPE CASING FOR THE METHOD CONSTRUCTION DIGGING AND THE METHOD CONSTUCTION DIGGING USING IT

摘要

PURPOSE: A steel pipe for excavation and a method of forming a circular steel pipe tunnel using the same are provided to minimize noise and vibration in excavation and minimize an excavation period. CONSTITUTION: A steel pipe(1) for excavation comprises a leading end(10), and a rear end(20). The leading end has an excavation function. The rear end is formed on the opposite side of the leading end and is bonded to a new steel pipe. An excavation unit(11) with a plurality of bit blades are formed on the leading end to ease excavation. A first slope unit(201) with the angle of 25is formed on the rear end so that the bonding to the new steel pipe can be easily made. The first slope unit is connected to a second slope unit with the angle of 25formed on the leading end of the new steel pipe so that an included angle of a V shape has 130.