PROBLEM TO BE SOLVED: To provide an auger device for soil continuous walls, which can maintain the vertical accuracy of drilling by only adding a simple composition and be manufactured at lower cost than conventional one even as a whole device.;SOLUTION: An auger device for soil continuous walls includes a spiral screw 12 arranged in a rod 11 connected to a driving device 18 suspended to be vertically movable, and the spiral screw 12 is provided only at the tip portion of the rod 11, while a cylinder casing 13 is arranged on the outer periphery of the spiral screw 12 so as to be pivotally supported by the rod 11.;COPYRIGHT: (C)2012,JPO&INPIT
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