| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a capping sheet preventing slipping down of covered soil on a slope while reducing a treatment cost of leachate, and a capping method of construction for a waste disposal site using the capping sheet. <P>SOLUTION: The capping sheet has a covered soil slipping down prevention layer comprising a three-dimensional mesh having a thickness of 5 mm or more and a fiber density of 20 kg/m<SP>3</SP>to 200 kg/m<SP>3</SP>on a protection layer side of a moisture-permeable water-proof sheet comprising a moisture-permeable water-proofing layer 3 and a protection layer covering at least one. The moisture-permeable water-proof layer of the sheet is a member selected from a fine porous membrane, a nonporous moisture-permeable sheet, a melt-blown non-woven fabric and a flash-spinning non-woven fabric. The protection layer comprises a long fiber non-woven fabric having a moisture-permeability of 2,000 g/m<SP>2</SP>/24 hour or more and a water-resistance pressure of 50 kPa or more. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
