ARTIFICIAL REEF AND ITS MANUFACTURE

PURPOSE:To cut down the cost of construction work by a method in which an flexible bag is divided vertically into two sections by a diaphragm, a filler is packed into the lower section, a fluid is packed into the upper section, and anchors are projectionally set on the seabed where the bag is set. CONSTITUTION:A bag 1 made of a flexible sheet material, having a top plate 3 and a bottom plate 4 which are integrally formed, is divided vertically into two sections by a diaphragm 5. An injection hole 10 is formed in the upper space of the bag 1 and a packing hole 8 and a discharge hole 9 are formed in the lower space. Anchors 11 are provided to the bottom plate 4 by projecting them from the bag-setting face of the seabed. A fluid 7, such as sea water, is packed into the upper space of the bag 1 and a filler 7, such as sand, is packed packed into the lower space.