Is considered in ecosystem the waterway structure

摘要

PROBLEM TO BE SOLVED: To insure the living environment for wild life by keeping a wet condition even in a waterway such as river of a small water flow. ;SOLUTION: A small waterway 7 having smaller width than the bottom width of a waterway 2 is constructed on the bottom part of the waterway 2 by continuously providing U-shaped grooves 3. The U-shaped groove 3 is provided with fitting grooves 10, 10 on both side walls for fitting partition walls 11 thereto. A space part 19 formed between the partition walls 11, 11 is filled with stones, and the whole upper face part is pressed by a net member 26. The edge part of the net member 26 is fixed to the partition plates 11 by bolts.;COPYRIGHT: (C)1997,JPO