Underground continuous wall drilling machine and underground continuous wall drilling method

摘要

PROBLEM TO BE SOLVED: To provide an underground continuous wall excavator and an underground continuous wall excavation method, which improve work efficiency even at a great deep region by reducing the excavation cycle time and improving the excavation pitch while maintaining the excavation accuracy.SOLUTION: An underground continuous wall excavator excavates an excavation groove by opening and closing a bucket 10 comprising a pair of right and left shells 11, 12. The bucket 10 can rotate in a horizontal direction at a present location. A revolving frame 60 equipped with the bucket 10 is rotatably and pivotally supported by a support 70. A underground continuous wall excavator 1 is suspended from a base machine through a support rope 4. In the underground continuous wall excavation method, the excavation groove at a predetermined depth for constructing an underground continuous wall is excavated by opening and closing the bucket 10 while preventing an excavation groove wall from collapsing by filling a stable solution in the excavation groove.SELECTED DRAWING: Figure 1