| 摘要 |
<p>The present invention relates to an auger comprising a double drilling rod and the drilling rod equipped with the same auger and, more specifically, to the auger comprising the double drilling rod and the drilling rod equipped with the same auger which drill the ground alternatively to arrange a sheet pile alternatively around a virtual installation line to install the sheet pile as maintaining mutual connection state of an adjacent sheet pile through a joint ear formed at both ends of the sheet pile on the strata like a boulder layer or a rock layer where it is difficult to perform a sheet pile driving work. The drilling rod connected to the auger comprises a first drilling rod and a second drilling rod. The first and the second drilling rod are constituted to form a fixed angle according to the center position of the sheet pile arranged alternatively by connecting adjacent sheet piles formed at both ends of the sheet pile. According to the auger comprising the double drilling rod, the length of a reaming hammer connected to the end of each drilling rod is different with each other. And a drilling hole can be alternatively drilled using the drilling rod on the virtual installation line to install the sheet pile. The position of the drilling hole can be changed without moving a drilling apparatus because it is possible to rotate the auger comprising the first and the second drilling rod. A drilling path is not deviated even though the drilling rod touches the boulder layer or the rock layer because the lengths of the first and the second drilling rod are different, and it is easy to install the sheet pile along the alternative drilling hole. Thus, the auger and the drilling rod of present invention have high work efficiency.</p> |
