| 摘要 |
PURPOSE: A tunnel drain is provided to collect water efficiently by arranging high void ratio tubes in parallel, and to protect concrete lining against underground water and lengthen the life span of the tunnel by draining remaining water secondarily through a waterproof sheet with arranging tubes in the mesh of the tunnel. CONSTITUTION: A shotcrete surface is contacted to the ground, and concrete lining is formed. A waterproof sheet is mounted between the shotcrete surface and the concrete lining. A pocket type glove member(2) is divided into two or more space parts(2a) between the shotcrete surface and the waterproof sheet, and a tube(4) is inserted to the space part to install a tunnel drain(1). A mesh(4a) is formed in the tube and made of filament yarn. Plural reinforced yarns(4b) are arranged longitudinally in the tube to keep the cylindrical mesh. The mesh or nonwoven fabric is formed at the side of the glove member, and a cut-off member is formed in the other side of the glove member.
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