ダウンロード数: 109
このアイテムのファイル:
ファイル | 記述 | サイズ | フォーマット | |
---|---|---|---|---|
a62b0p38.pdf | 1.92 MB | Adobe PDF | 見る/開く |
タイトル: | ダム常用洪水吐ゲートの機能低下に伴う洪水リスク評価に関する検討 |
その他のタイトル: | Study on Flood Risk Assessment Caused by Functional Deterioration of Dam Flood Control Gates |
著者: | 高田, 翔也 角, 哲也 |
著者名の別形: | TAKATA, Shoya SUMI, Tetsuya |
キーワード: | ダム堆砂 ゲート閉塞 n-1 rule ダムリスクマネジメント reservoir sedimentation clogging of outlets dam risk management |
発行日: | Sep-2019 |
出版者: | 京都大学防災研究所 |
誌名: | 京都大学防災研究所年報. B |
巻: | 62 |
号: | B |
開始ページ: | 671 |
終了ページ: | 678 |
抄録: | In recent years, dysfunction or malfunction of dam spillways or bottom outlets have been reported because of aging and sedimentation in existing dams worldwide. They affect discharge capacity of dams which may decrease suitable flood control functions. Therefore, in this research, risk factors for Japanese dams that cause functional deterioration of flood control ability have been discussed in order to extract high-risk dams. The risk factors for bottom outlets include inlet elevation over sedimentation level, number of outlet structures and existence of sunken large wood debris. In the risk assessment procedure, "n-1 rule" (n: number of gate) which is design criteria for securing the safety of dams in Switzerland is considered. We conducted case studies on the Susobana Dam in Nagano Prefecture to clarify actual risk after losing flood control capacity as well as numerical modelling to assess flow conditions acting on sunken large wood debris to be dragged into outlet gate. |
URI: | http://hdl.handle.net/2433/244993 |
関連リンク: | http://www.dpri.kyoto-u.ac.jp/publications/nenpo/ |
出現コレクション: | Vol.62 B |
このリポジトリに保管されているアイテムはすべて著作権により保護されています。