CUT-OFF STRUCTURE FOR TUNNEL
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专利名称：CUT-OFF STRUCTURE FOR TUNNEL 发明人：SUMIDA HITOSHI,KISHIMOTO OSAMU 申请号：JP15540787
申请日：19870624
公开号：JPS641897A
公开日：
19890106
专利内容由知识产权出版社提供
摘要：PURPOSE: To improve the working efficiency of cut-off of water by slidably engaging a waterproof sheet with a plurality of guides which are arranged on side surfaces of the natural ground in parallel with the direction of a tunnel and at intervals in the circumferential direction of the tunnel. CONSTITUTION: A plurality of guides G1 , G2 ,... are arranged on three side surfaces of primary concrete sprayed on a rock mass 2 of the tunnel in parallel with the direction of the tunnel, and at predetermined intervals in the circumferential direction of the tunnel. The rear surface of a waterproof sheet 1 has suspenders S1 , S2 , secured thereto, depending on the interval of the guides G1 , G2 ,.... Then, the sheet 1 is moved in the direction of the tunnel while key portions of the respective suspenders S1 , S2 ,... being sequentially engaged with hook portions of fasteners T1 , T2 ,... attached to the guides G1 , G2 , respectively.
申请人：C I KASEI CO LTD
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