庄川扇状地における浸透型洪水調整池の浸透挙動 : 扇状地地盤の高透水性を活用した洪水調整池の取り組み(北陸の技術的課題とその克服,<特集>北陸支部特集号-「心豊かに暮せる」をめざして-)

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This report deals with the regulating reservoir that was built for flood-control in the Shougawa alluvial fan of Toyama prefecture, Japan. It was designed to have a high permeable bottom to maintain smooth infiltration of flood water pouring from a river. The infiltration process in the permeable ground was surveyed by sensors, such as piezometers and cross-borehole radar, set inside the observation boreholes installed in the reservoir. The observation showed that not only the temperature of the water but also the existence of pore air and heterogeneity in the ground essentially effects the infiltration behavior beneath the reservoir.
2011-02-01