| 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 25°is 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 25°formed on the leading end of the new steel pipe so that an included angle of a V shape has 130°.
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