Processing site coverage and the manhole for having repaired sewage and ground water deposit Poisoning sewer

摘要

Lower surface drains, excavate channel (10) or tunnel stope, (15) direction of longitudinal axis is discharged, in the base (20) of grafting material (21), this polyethylene segment (30) is continuously inserted into required shape, this section is fitted to be in the face-down side and anchor log (33). The required final form for lagging the grafting material (20) of hardening generates, and is equipped with polyethylene sections (30) on forming drain electrode (40). Form polyethylene foil (31) and anchor log (33 ") on outer surface are laid on the side downwards. Each anchor log (33 " ') it is opposite with free space they be then filled with filled layer grafting material (20). It is to pass through welding. that lag, which hardens being disassembled with the connection of each polyethylene sections (30) and component (31) for that layer (40) form,IMAGEpolyethylene film