| 摘要 |
PURPOSE: A waterproof sheet for a tunnel is provided to efficiently drain water discharged from the excavated surface of a tunnel and to minimize damage to a first waterproof sheet touching the surface of shotcrete. CONSTITUTION: A waterproof sheet(100) for a tunnel comprises a first waterproof sheet(10), a fixed wing(20), and a rugged portion(30). The first waterproof sheet is composed of a soft PE material with high strength. The fixed wing is formed on the top surface of the first waterproof sheet. The rugged portion is composed of multiple protrusions(32) and is formed on the top surface of the first waterproof sheet to reinforce the strength of the first waterproof sheet. The rugged portion prevents the first waterproof sheet from directly touching the surface of shotcrete and drains water discharged from the excavated surface of a tunnel before shotcrete is placed.
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