{"created":"2021-03-01T06:34:19.915976+00:00","id":28512,"links":{},"metadata":{"_buckets":{"deposit":"3d8b611c-dcd7-489f-94e7-a769a37bbd2a"},"_deposit":{"id":"28512","owners":[],"pid":{"revision_id":0,"type":"depid","value":"28512"},"status":"published"},"_oai":{"id":"oai:niigata-u.repo.nii.ac.jp:00028512","sets":["453:456","485:872:1583:1617"]},"item_7_alternative_title_1":{"attribute_name":"その他のタイトル","attribute_value_mlt":[{"subitem_alternative_title":"Evaluation of Flow Transmissibility of Flow-through Rockfill Dams based on Laboratory Water Flume Tests"}]},"item_7_biblio_info_6":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2000-03","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"2","bibliographicPageEnd":"138","bibliographicPageStart":"129","bibliographicVolumeNumber":"52","bibliographic_titles":[{"bibliographic_title":"新潟大学農学部研究報告"},{"bibliographic_title":"新潟大学農学部研究報告","bibliographic_titleLang":"en"}]}]},"item_7_description_4":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"室内試験および数値計算法にもとづき、ロックフィルを通る流れの水頭損失式を求め、ロックフィル構造物の通水特性を調べた。まず、河川礫を用いた一次元透水試験をおこない、動水こう配と流速の非線形な関孫をForchheimer式により表した。これにより、ロック材の材料特性と構造物の間隙条件から決定される水理学的平均経をパラメータとして、ロックフィル構造物の水頭損失特性を調べることが可能となった。ここで求めた水頭損失式の妥当性を、室内水路模型実験ならびに有限要素法(FEM)にもとづく数値計算により確認した。構造物を通過する流量、堤体内の流れの状況のいずれも、一次元透水試験によって求めた水頭損失式により良好に推定することができた。 小型の模型から実規模大までの規模の異なる透水型ロックフィル堤体を対象に、水位流量曲線の特教を調べた。堤体を通過する流量が水位とともに累乗的に増大すること、またこの水位流量関係に対し水温の影響はまったくなく、これを水理学的な設計因子として考慮する必要がないことを示した。これらの水位流量曲線に対し、有効動水こう配を導入することにより、堤体の規模に依存しない統一的な水位流量曲線をえることができた。","subitem_description_type":"Abstract"},{"subitem_description":"The head loss property and the flow transmissibility of the rockfill structures are investigated based on the laboratory tests and the numerical method. River gravel with a particle size of 0.75 to 2.25 cm in diameter is used in the laboratory tests. Firstly the nonlinear relationship between the discharge velocity and the applied hydraulic gradient is determined based on the one-dimensional permeability test. The Forchheimer equation is employed as the head loss equation. The hydraulic mean radius, which represents the effect of rock particle size and shape as well as the voids in the structure on the flow through the rockfill, is effectively introduced into the head loss equation. Secondly the effectiveness of the head loss equation is examined by the laboratory water flume test ant the numerical method, where the numerical calculation is formalized based on the finite element method. 13 model embankments with different size of rock particles, slope inclination and top width of the dam section are tested using the acrylic water flume 20 cm wide and 350 cm length. A good agreement of the flow transmissibility between the measurement and the numerical calculation is obtained. Lastly the stage-discharge rating curves of the flow-through rockfill dams are calculated by using the head loss equation determined above and the numerical method. It's found that the flow discharge increases exponentially with the water depth in the upstream reservoir, and that the water temperature does not have any effect on the discharge of the flow through the rockfill structures. The stage-discharge rating curves of the dams with different size can be effectively unified into one curve by introducing the effective hydraulic conductivity of the rockfill structure.","subitem_description_type":"Abstract"}]},"item_7_full_name_3":{"attribute_name":"著者別名","attribute_value_mlt":[{"nameIdentifiers":[{"nameIdentifier":"164012","nameIdentifierScheme":"WEKO"}],"names":[{"name":"Morii, Toshihiro"}]},{"nameIdentifiers":[{"nameIdentifier":"164013","nameIdentifierScheme":"WEKO"}],"names":[{"name":"Sada, Toyokazu"}]},{"nameIdentifiers":[{"nameIdentifier":"164014","nameIdentifierScheme":"WEKO"}],"names":[{"name":"Kobayashi, Takayuki"}]},{"nameIdentifiers":[{"nameIdentifier":"164015","nameIdentifierScheme":"WEKO"}],"names":[{"name":"Soyama, Seijuro"}]}]},"item_7_publisher_7":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"新潟大学農学部"}]},"item_7_select_19":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_select_item":"publisher"}]},"item_7_source_id_11":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AN00183393","subitem_source_identifier_type":"NCID"}]},"item_7_source_id_9":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"03858634","subitem_source_identifier_type":"ISSN"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"森井, 俊広"}],"nameIdentifiers":[{"nameIdentifier":"164008","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"佐田, 豊和"}],"nameIdentifiers":[{"nameIdentifier":"164009","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"小林, 孝至"}],"nameIdentifiers":[{"nameIdentifier":"164010","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"曽山, 清十郎"}],"nameIdentifiers":[{"nameIdentifier":"164011","nameIdentifierScheme":"WEKO"}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2019-08-20"}],"displaytype":"detail","filename":"55_2_129-138.pdf","filesize":[{"value":"763.4 kB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"55_2_129-138.pdf","url":"https://niigata-u.repo.nii.ac.jp/record/28512/files/55_2_129-138.pdf"},"version_id":"c6a9a0cd-93ae-4d8c-b38a-736def456ce6"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"ロックフィル","subitem_subject_scheme":"Other"},{"subitem_subject":"水頭損失式","subitem_subject_scheme":"Other"},{"subitem_subject":"水理学的平均径","subitem_subject_scheme":"Other"},{"subitem_subject":"室内水路模型実験","subitem_subject_scheme":"Other"},{"subitem_subject":"FEM数値計算","subitem_subject_scheme":"Other"},{"subitem_subject":"Rockfill","subitem_subject_scheme":"Other"},{"subitem_subject":"Head loss equation","subitem_subject_scheme":"Other"},{"subitem_subject":"Hydraulic mean radius of voids","subitem_subject_scheme":"Other"},{"subitem_subject":"Laboratory water flume test","subitem_subject_scheme":"Other"},{"subitem_subject":"FEM numerical calculation","subitem_subject_scheme":"Other"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"jpn"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"departmental bulletin paper","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"水路模型実験による透水型ダムの通水特性の評価","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"水路模型実験による透水型ダムの通水特性の評価"},{"subitem_title":"水路模型実験による透水型ダムの通水特性の評価","subitem_title_language":"en"}]},"item_type_id":"7","owner":"1","path":["456","1617"],"pubdate":{"attribute_name":"公開日","attribute_value":"2014-02-13"},"publish_date":"2014-02-13","publish_status":"0","recid":"28512","relation_version_is_last":true,"title":["水路模型実験による透水型ダムの通水特性の評価"],"weko_creator_id":"1","weko_shared_id":null},"updated":"2022-12-15T03:58:42.186493+00:00"}