Current Conditions of Reservoir Sedimentation in Irrigation Dams in Japan

JARQ : Japan Agricultural Research Quarterly
ISSN 00213551
書誌レコードID(総合目録DB) AA0068709X

Field data of 53 high dams were comprehensively analyzed to clarify the current conditions of sedimentation in irrigation dams in Japan compared with dams for other purposes. At first, it was shown that the CI ratio was an important index which markedly affected the sedimentation factors, the stages of sedimentation and the trap efficiency. Next, the sedimentation characteristics of the irrigation dams were analyzed and clarified by using the CI ratio. Main results obtained are as follows: (1) The annual sediment deposit rate of irrigation dams is relatively smaller than that of power generation dams in general, implying that the locations of irrigation dams are usually suitable for preventing the occurrence of sedimentation problems. (2) The specific sediment rate of irrigation dams is relatively large in general. Accordingly, it is necessary to investigate the factors which cause the increase of the specific sediment rate rather than the sediment deposit rate in irrigation reservoirs.

作成者 Hiroyuki TARUYA Hideto FUJI
国立情報学研究所メタデータ主題語彙集(資源タイプ) Journal Article
開始ページ 29
終了ページ 34
言語 eng