METHOD FOR RESTORING AND PRESERVING RIVER WATER ECOSYSTEM BY NATURAL PURIFICATION IN THE MIDSTREAM OF THE RIVER

摘要

PURPOSE: A method for restoring a river water ecosystem is provided to prevent the river contamination by forming the basic ecosystem with the upstream and downstream cutoff walls and the deep and shallow parts, to stabilize the ecosystem by moving various kinds of fish at the constant depth of water, and to prevent drought or flood by storing the large amount of water in the river. CONSTITUTION: To restore the river water ecosystem, the upper part of an upstream cutoff wall(1) is placed in a line with the riverbed, and the upstream cutoff wall is constructed. The upper part of a downstream cutoff wall(5) is placed in a line with the riverbed, and the downstream cutoff wall is constructed and spaced from the upstream cutoff wall. After dredging the river between the upstream cutoff wall and the downstream cutoff wall, a water storage part(7) is constructed to release various kinds of aquatic organisms. Plural deep regions are composed of the water storage parts, and constructed. Shallow regions(30) are formed between the deep regions for river purification.