| 摘要 |
<p>PURPOSE: To improve drilling workability by drilling a piping hole for burying a pipe after a narrow width groove having a length from a road surface to the depth of the buried pipe is drilled, and arranging a movable device, a drilling rig which is connected to the movable device, and a soil draining conveyor on a frame supported on the book of a heavy machinery. CONSTITUTION: At the time of burying work of an under ground buried pipe, firstly drilling is carried out till the depth of the up end of a buried pipe by a groove drilling machine such as the trench cutter of a ground surface 1 so as to form a narrow width groove 2 along a piping root. A large diameter piping hole 3 is drilled along a pipe burying track 53 by a piping hole drilling machine 23. In the drilling work, a frame 21 supported to the boom 22 of a heavy machinery 20 is positioned by expanding and contracting the stroke of a movable device (a liquid operated jack) 29 so as to set the drilling device 24 in a prescribed depth. Rotation driving of a drilling head 24a is started, and also the movable device 29 is driven, thrust is applied, and then drilling is carried out. Soil for draining is transported to the ground by a soil draining conveyor 25, and then the soil is drained on a dump car 25b and the like.</p> |
