BORING PIPE CAPABLE OF PERFORMING CONTINUOUS BORING EVEN IN CASE OF A DEEP BORE HOLE

摘要

PURPOSE: A boring pipe is provided to reduce construction period when boring a hole having a depth of 30m or greater by being extended so as to perform continuous boring.;CONSTITUTION: A boring pipe(20) comprises a first insertion pipe(21) and a second insertion pipe(22) which is inserted and coupled in the first insertion pipe. The first insertion pipe has a first holding groove on the top and a second holding groove on the bottom. The second insertion pipe has a holding protrusion on an end which can be selectively coupled to the first or second holding groove. The first holding groove comprises a vertical holding groove which is formed in the longitudinal direction of the first insertion pipe and a horizontal holding groove which is spatially connected to the vertical holding groove by crossing the vertical holding groove.;COPYRIGHT KIPO 2011