WORKING MACHINE AND WORKING METHOD FOR UNDERGROUND FOUNDATION PILE

摘要

The pile carrying out method is comprised of (a) excavating the ground with an auger(4) rotated owing to driving of a driving apparatus(3) installed in a leader(2); (b) injecting the mortar(9) into the excavated ground a little after excavation until a excavation bit(7) installed in a lower end of the auger reaches supporting layer(8); (c) lowering vertically a pile to the supporting layer, inserting it into the interior of the cavity part of the auger so that the mortar can be diffusion-penetrated into the space around the supporting layer by the falling load of the pile; (d) getting the auger to backlash to get back.