| 摘要 |
PROBLEM TO BE SOLVED: To provide a multi-spindle auger method capable of continuously carrying out the execution of a diaphragm wall from a pre-boring. SOLUTION: Three auger screws 7-9 are mounted to a self-propelling base machine 2 so that shafts can maintain such a relation as they are parallel to each other and are separated from each other by a specific distance, the pre-boring is carried out by making revolution movement while making rotation movement of the auger screws 7-9 by a rotary driver 12, and then, the self-propelling base machine 2 is made to travel while stirring and mixing cement hardener with in-situ soil by rotation of the auger screws 7-9 to carry out continuous execution of the diaphragm wall while excavating a ditch corresponding to a required thickness of the wall in the ground by three auger screws 7-9 to excavate the ditch G from the pre-boring H in succession.
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