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  1. 学術雑誌掲載済論文
  2. 和雑誌

出水時の河道変化に対する分岐流路維持の効果

https://kitami-it.repo.nii.ac.jp/records/2000024
1f6d2fef-401e-4bb7-9bf4-6582541326dd
名前 / ファイル ライセンス アクション
土木学会論文集B1(水工学)74-5,p1003-1008.pdf 土木学会論文集B1(水工学)74-5,p1003-1008.pdf (4.3 MB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2021-03-31
タイトル
言語 ja
タイトル 出水時の河道変化に対する分岐流路維持の効果
タイトル
言語 en
タイトル THE EFFECT OF BRANCHED CHANNEL MAINTENANCE ON RIVER CHANNEL EVOLUTION DURING FLOODS
言語
言語 jpn
キーワード
言語 en
主題Scheme Other
主題 Satsunai River
キーワード
言語 en
主題Scheme Other
主題 2016 flood
キーワード
言語 en
主題Scheme Other
主題 artificial flood
キーワード
言語 en
主題Scheme Other
主題 branched channel
キーワード
言語 en
主題Scheme Other
主題 river channel disturbance
資源タイプ
資源 http://purl.org/coar/resource_type/c_6501
タイプ journal article
アクセス権
アクセス権 open access
アクセス権URI http://purl.org/coar/access_right/c_abf2
著者 住友, 慶三

× 住友, 慶三

ja 住友, 慶三

en SUMITOMO, Keizo

Search repository
渡邊, 康玄

× 渡邊, 康玄

WEKO 214
CiNii ID 9000411228257
KAKEN - 研究者検索 00344424

ja 渡邊, 康玄

ja-Kana ワタナベ, ヤスハル

en Watanabe, Yasuhau

Search repository
泉, 典洋

× 泉, 典洋

WEKO 39131

ja 泉, 典洋

en IZUMI, Norihiro

Search repository
山口, 里実

× 山口, 里実

CiNii ID 9000410757217

ja 山口, 里実

ja-Kana ヤマグチ, サトミ

en YAMAGUCHI, Satomi

Search repository
米元, 光明

× 米元, 光明

CiNii ID 9000405666878

ja 米元, 光明

en YONEMOTO, Mitsuaki

Search repository
抄録
内容記述タイプ Abstract
内容記述 河道内が樹林化した札内川において,撹乱誘発による礫河原の再生を目的として,樹林内に残る旧流路への接続掘削による分岐流路の維持に取り組んでいる.そのような中で,2016年8月に既往最大規模の出水が発生した.出水による河道内の変化状況から,旧流路への接続掘削による分岐流路の維持は,出水時の礫河原再生に効果的であることが示された.また,河道中央部への分岐流路の維持により,分岐流路での河床変動を促し,出水時の堤防方向への侵食を抑制する効果が期待できることを河床変動計算により示した.さらに,水面比高差拡大による撹乱頻度の低下に伴う早期の再樹林化,側岸侵食の進行による堤防決壊リスク増加という新たな課題に対しても,早瀬区間における礫河原への分岐流路掘削により,礫河原の撹乱更新及び側岸侵食軽減の効果が期待できることを示した.
言語 ja
抄録
内容記述タイプ Abstract
内容記述 The river channel of Satsunai River is currently covered with forest, and we have been aiming to regenerate its gravel bar through induction of disturbances. In order to do so, we have been excavating to maintain the branched channel by connecting it to the old watercourse left in the forest. It was under such circumstance that the largest flood in history occurred in August, 2016. The changes in the river channel during the flood has proven that maintenance of the branched channel by excavating to connect it to the old watercourse is effective in promoting regeneration of the gravel bar during floods. Furthermore, by calculating the changes in the riverbed, we demonstrated that maintaining branched channel to the center of the river channel could promote riverbed change in the branched channel, which can be expected to suppress erosion towards the embankments during the flood. Additionally, in terms of coping methods to new challenges such as early regeneration of vegetation due to decline in the frequency of disturbances caused by growth of the relative height difference of water surfaces, and the increased risk of river bank failure due to increased erosion of the embankments, we also demonstrated that digging branched channel to the gravel bar in the riffle area can be expected to renew disturbances in the gravel bar, and reduce erosion of the embankments.
言語 en
書誌情報 ja : 土木学会論文集B1(水工学)

巻 74, 号 5, p. I_1003-I_1008, 発行日 2018
ISSN
収録物識別子タイプ PISSN
収録物識別子 2185-467X
DOI
関連識別子
識別子タイプ DOI
関連識別子 https://doi.org/10.2208/jscejhe.74.5_I_1003
論文ID(NAID)
関連識別子
識別子タイプ NAID
関連識別子 130007757716
出版者
言語 ja
出版者 土木学会
著者版フラグ
値 publisher
出版タイプ
出版タイプ VoR
出版タイプResource http://purl.org/coar/version/c_970fb48d4fbd8a85
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