INTERLINKAGE EROSION SHIELD SYSTEM OF BLOCK WHICH HAS SPACE AND THE MOBILE PASSAGE OF FISH

摘要

A fishway block having a fishway space and a fish moving passage with a corrosion-resistant device for a linkage is provided to prevent the disarrangement and separation of fishway blocks and to prevent water pollution by preventing a linkage of a fishway block from getting rusty by river water or seawater. The invention relates to a fishway block(1) including fish moving holes(3) penetrated in a perpendicular direction to branches(2) spread in four directions to have a cross shape and a linkage(4) of a deformed bar(4a) for connecting with adjacent fishway blocks buried under the end of each branch composed of an upper oblique plane(8a) and a lower oblique plane(8b), wherein the linkage is formed by installing a stainless steel pipe(5) covering the deformed bar on a part exposed to the concrete of the revetment block and fastened with a binder and bending the stainless steel pipe and the deformed bar simultaneously. In addition, a corrugated pipe is used as the stainless steel pipe to have excellent adhesive strength and to disperse cracks minutely and attached with a moisture cutoff sealing(11) made of silicon or rubber on the outer circumferential surface to prevent the permeation of seawater or river water through a gap between the concrete and the outer circumferential surface of the stainless steel pipe, thereby to prevent the deformed bar from getting rusty.