CUT-OFF STRUCTURE OF BONDED PART OF WATER BARRIER SHEET

摘要

PURPOSE:To easily prevent the leakage of sewage from a damaged part even when a damage is generated in the bonded part of water barrier sheets in a waste disposal yard where the water barrier sheets are laid. CONSTITUTION:A cut-off structure is constituted of the sheet piece 15 covering a water barrier sheet 11 from below over a predetermined width centering around the bonded part 14 of a pair of water barrier sheet members 13 and the swellable cut-off material 16 interposed between the sheet piece 15 and the water barrier sheet 11. The sheet piece 15 is bonded to the under surfaces of the water barrier sheet members 13 at both end parts thereof to form a flat strip like cylindrical member 17 with a predetermined width and a predetermined thickness along with the water barrier sheet 11 centering around the bonded part 14 and the swellable cut-off material 16 is arranged in the strip like cylindrical member 17.