| 摘要 |
PURPOSE:To easily construct a partitioning weir in water, by a method wherein, after an impermeable sheet, formed by bending it in a U-shape in cross section, is laid in water, the interior of the U-shaped part of the sheet is filled with sandy soil as impermeable layers are formed at proper intervals. CONSTITUTION:An impermeable sheet 3, having flexibility, is bent in a U-shape in cross section, permeable hoses 4 and 5, such as rubber hoses, are secured to upper edges on both sides and both sides of a bottom edge, and the one end of a pressure resistance pipe 6 is connected to the central part of the permeable hose 5 on the bottom edge. In a spot, where a partitioning weir is built in water, the permeable hose 4 is moored to a buoy 12 and the permeable hose 5 is moored to an anchor 13, and after a pressure air is fed in the hoses 4 and 5, the permeable sheet 3 is sunk in water. The interior of an U-shaped part 8a, surrounded by the inner and outer sheets 3 and filled with water, is filled with sandy soil 15 and impermeable soil 16 to complete a partitioning weir. |
