AGITATING DEVICE FOR GROUND IMPROVEMENT WITH REINFORCED EXCAVATION CAPABILITY AND SOIL IMPROVEMENT METHOD USING IT

摘要

The present invention relates to a ground improvement stirring device and a soft ground improvement method using the same. The present invention relates to a ground rock layer such as weathered rock, soft rock, and granite, and a rock layer such as amber stone by crushing and excavating a rock layer of weathered rock, soft rock, and granite. A ground improvement agitation device having an enhanced excavation function to make an improved mixture mixed by stirring, comprising: a central auger shaft and a pair of side auger shafts for improving the ground, wherein the ground improvement agitation device includes: Excavating wings provided on the side auger shaft and the outer peripheral surface of the central auger shaft; A central portion coupled to the side auger shaft through an open bottom surface of the side auger shaft to reciprocate along the axial direction of the side auger shaft while rotating in association with the side auger shaft, and having a columnar shape coaxially with the auger shaft; A hammer bit made up of a plurality of extension legs which are speeched from the central part and are arranged at equal intervals around the central part; Pneumatic strike means provided on the inside of the side auger shaft to induce a reciprocating movement of the hammer bit by the operation of pneumatic; An air discharge path formed in the hammer bit to discharge air used in the pneumatic impact means; And an improved material supply path formed in the central auger shaft such that an improved material is supplied along the axial direction of the central auger shaft and ejected from a lower portion of the central auger shaft. Characterized in that comprises a.