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    • 5. 发明专利
    • SAND-PROTECTING SHEET WITH BUILT-IN METAL
    • JPH0892940A
    • 1996-04-09
    • JP22749894
    • 1994-09-22
    • MAEDA KOSEN KK
    • KATO SUSUMUMIMURA MITSUNORIYOMO TADAHIRO
    • E02B3/12
    • PURPOSE: To make it possible to sew a sand-protecting sheet and prevent the sheet from being floated out or carried away during the execution of work, and keep the sheet submerged in an intended location surely and maintain a desired sand-protecting effect for a long time. CONSTITUTION: A permeable sand-protecting sheet 10 is formed with a cloth 11, a metal part 21, whose specific weight is at least 5.0, a bag-shaped cylindrical part 12 and an ear 13. The bag-shaped cylindrical part 12 is preliminarily provided with a specified spacing in the longitudinal direction and sewn and then the metal body 21 is inserted into the cylindrical part 12. The sand- protecting sheet 10 is prepared and installed to a seabed at an area which forms a foundation of a breakwater. This construction makes it possible to sew the sheet with ease and prevent the sheet from being carried away by with waves or being floated by wind during the execution of work, since a specified weight is imparted on a construction site and keep the sheet submerged at an intended site surely and hence maintain a desired sand-protecting effect at a specified position for a long time.