Permeation formation digging of the underdrainage tube of the embedding being completed Out the device and the permeation formation digging which digs out

摘要

PROBLEM TO BE SOLVED: To provide a digging-out device for an infiltration layer on a drainage culvert embedded in the ground and the digging-out device for the drainage culvert itself while digging out the infiltration layer.;SOLUTION: The digging out device for a drainage culvert is constituted of a vehicle provided with an infiltration layer digging-out means for digging out an infiltration layer above the drainage culvert embedded and a drainage pipe taking-out guide for taking out the drainage culvert onto the ground while guiding the side face and the bottom face of the embedded drainage culvert, and is provided with a vehicle guide means controlling the travelling lever of the vehicle so that the vehicle always travels above the embedded drainage culvert with cooperation with the upper face of the drainage culvert to dig out the infiltration layer while traveling above the embedded drain culvert and taking out one by one the embedded drainage culverts by the taking-out guide.;COPYRIGHT: (C)2004,JPO