MULTI-PLATE COMPLEX WATERPROOF SHEET USING WASTE POLYETHYLENE FOR TUNNEL CONSTRUCTION AND TUNNEL WATERPROOFING METHOD THEREOF

摘要

PURPOSE: A composite waterproof sheet using recyclable polyethylene-based resin and a waterproofing method of a tunnel using the same are provided to prevent the deflection of a polyester nonwoven fabric by improving adhesive strength of a support layer and a waterproof layer. CONSTITUTION: A composite waterproof sheet(E) using recyclable polyethylene-based resin comprises a waterproof sheet(1) and a fixed wing(2). The waterproof sheet is composed of an Y-layer(11) and an Y-layer(12) and guides water generated from shotcrete. The X-layer cuts off water. The Y-layer prevents foreign materials from being attached on the X-layer and fixes the X-layer to the shotcrete. The fixed wing is welded to the waterproof sheet and fixes the waterproof sheet to the surface of the shotcrete.