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    LOW LAYER FLOW CONTROL STRUCTURE
    39.
    发明专利
    LOW LAYER FLOW CONTROL STRUCTURE 失效

    公开(公告)号：JPH0343029A

    公开(公告)日：1991-02-25

    申请号：JP17713189

    申请日：1989-07-11

    Applicant: MARINO FORUM 21 ,  OHBAYASHI CORP ,  TAISEI CORP ,  TOYO CONSTRUCTION ,  TORAY INDUSTRIES ,  HAZAMA GUMI

    Inventor： NAKAMURA MITSURU ,  HOSONO SEIICHI ,  WADA NAOKI ,  KOBAYASHI KATSU ,  NAKAYAMA YOSHIFUMI ,  SUZUKI TATSUO

    IPC: A01K61/00

    Abstract: PURPOSE:To obtain the title structure removing silt, etc., on the surface layer part by tide and ocean current and making an environment suitable for growth of benthos by setting block materials on the bottom of the sea and increasing flow velocity of tide or coean current between the block materials and the surface layer part on the bottom of the sea. CONSTITUTION:A pair of side walls (e.g. side walls made of steel material) 10 and 10a equipped with a cleaning and digging preventing member 14 at the bottom are integrated with a V-shaped resistant plate (e.g. plate made of film material) 12 to form a block material B1. The block material is laid at given intervals on the bottom of the sea to make the walls 10 vertical, flow velocity of tide or ocean current in the X direction is increased at the under surface side of the resist plate 12 and relatively large particles such as sand suitable for growth of benthos are left at the under surface part to give the aimed structure.

    ALGA-PROOF MATERIAL
    40.
    发明专利
    ALGA-PROOF MATERIAL 失效

    公开(公告)号：JPH01295905A

    公开(公告)日：1989-11-29

    申请号：JP12681088

    申请日：1988-05-23

    Applicant: TORAY INDUSTRIES

    Inventor： NAKAYAMA YOSHIFUMI ,  TAKAHASHI KIYOKO

    IPC: E02B1/00 ,  B32B5/02 ,  D01F6/04 ,  D01F6/12

    Abstract: PURPOSE:To obtain an underwater structure full of flexibility and excellent in shellfish-attachment-proof property, by using polytetrafluoroethylenic fibers or polyethylenic fibers, for a surface section coming in contact with the water of the underwater structure of a rope, a floating wave dissipation bank, a gate, or the like. CONSTITUTION:A section coming in contact with the water of the underwater structure of a finishing rope, a mooring rope, a surface layer or intermediate layer floating fish gathering place, a floating wave dissipation bank, a fishing net, a marine station or a dam, the gate of an irrigation canal, or the like is composed of alga-proof materials. The alga-proof materials are composed of polytetrafluoroethylenic fibers and/or polyethylene system fibers. As a result, various underwater structures having flexibility and also shellfish-attachment- proof property can be obtained.

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