River outside Hokkaido storage facility during flooding river water

摘要

PROBLEM TO BE SOLVED: To provide an outside reservoir institution of a river course capable of selectively taking river water in case of floods, storing it in an underground hollow or the like after the preparatory treatment has been applied thereto and being used for the utilization of a water storage such as water for living or the like at need.;SOLUTION: In the outside reservoir institution of the river course of river water in the case of floods constituted so that river water can be taken through an intake 3 in the case of floods, impurities contained in river water can be eliminated to tentatively store it and that river water is adjusted to enable a river water storage section to supply river water to a down-stream water purification institution, a dust-tight institution 20 formed by arranging disc construction screens 21 between an intake gate 10 consisting of an upper side gate 12 capable of adjusting an intake depth in accordance with the time of floods and a lower side gate 13 and an intake waterway 4 communicated with the back of the intake gate 10 is provided to the intake 3.;COPYRIGHT: (C)2006,JPO&NCIPI