IMPERVIOUS STRUCTURE AND IMPERVIOUS METHOD UNDER VEHICLE ENTRY PASSAGE IN WASTE FINAL DISPOSAL SITE

摘要

PROBLEM TO BE SOLVED: To prevent a slip between multi-layer laminate members and between slopes without impairing imperviousness to water in an impervious structure under a vehicle entry passage even if a vehicle loaded with waste runs on the vehicle entry passage.SOLUTION: An impervious structure 100 under a vehicle entry passage 104 in a waste final disposal site includes: a lower protective layer 111 laid on a slope 101; a first stationary plate 120 having an anchor 122 driven in the slope 101 through the lower protective layer 111; a lower layer impervious sheet 112 laid on the lower protective layer 111 that is fusion-bonded to a fusion-bonding part 121 of the first stationary plate 120; an intermediate protective layer 113 laid on the lower layer impervious sheet 112; an upper layer impervious sheet 114 laid on the intermediate protective layer; a second stationary plate 130 disposed in a through-hole 133 of the intermediate protective layer 113 that is fusion-bonded to the lower layer impervious sheet 112 at a fusion-bonding part 132, and fusion-bonded to the upper layer impervious sheet 114 at a fusion-bonding part 131; and an upper protective layer 115 laid on the upper layer impervious sheet 114.