Cushioning material for sand control dam

Abstract

Abstract PURPOSE:To reduce effectively the constitution cost of a sand control dam and to protect surely the dam from breakage, by placing at least one heat- fusible layer between a plurality of foamed sheets. CONSTITUTION:As the foamed sheets, closed-cell or open-cell foams made of polystyrene, ABS resin, polyurethanes, polyvinyl chloride beside polyethylene can be used and e.g., upper two sheets among three foamed sheets 1 are jointed with a heat-fusible layer 3 and a lower foamed sheet 1 is laminated through e.g. an elastic sheet 4 such as a rubber sheet and both upper and lower faces of the elastic sheet 4 are adhered with foamed sheets 1 with an adhesive. Further, e.g., it may be possible to fix a rapid frame member 10 framing a cover rubber 9 on the cover rubber 9 covering the outer surface of a cushioning material 2 by means of vulcanization, adhesion and the like and to fix the rigid frame member 10 and the edge part of the cover rubber 9 with anchor bolts to fix the cushioning material 2.

Inventors

• 👤 Shigeo Ueda

Bibliographic Details