白子川流域の水路跡と管理用通路及び隣接する土地を活用した雨水流出抑制による治水効果の試算

概要

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Collecting rainwater in a river basin and slow flowing out can prevent urban river flood and create a pleasant walkway along a stream. We surveyed the location and area of waterway trails, river maintenance passages, and adjoining public and private open lands for rainwater in the Shirako River Basin. And we did a test calculation of flood control effect by outflow control of rainwater and measured collecting amount of rainwater and section sizes of the waterways. We also examined that the waterway can be a daily walkway along a rainwater stream. In heavy rain, the waterway is made such as to become a wider and deeper stream which controls river flood. In addition we examined that the present river which was constructed for a 30mm/h rain fall has enough section size for 50mm/h rain fall because of the controling devices for outflow rainwater at the adjoining open lands, waterway trails and river maintenance passages.
社団法人日本建築学会の論文
2004-11-30