{"_buckets": {"deposit": "1d7b58ef-3e64-46c4-a51c-5c8fdd436bb6"}, "_deposit": {"id": "28297", "owners": [], "pid": {"revision_id": 0, "type": "depid", "value": "28297"}, "status": "published"}, "_oai": {"id": "oai:niigata-u.repo.nii.ac.jp:00028297"}, "item_7_alternative_title_1": {"attribute_name": "\u305d\u306e\u4ed6\u306e\u30bf\u30a4\u30c8\u30eb", "attribute_value_mlt": [{"subitem_alternative_title": "Laboratory Measurement of Permeability of Riverbed Sediment and Prediction of Seepage Flow under River Weir"}]}, "item_7_biblio_info_6": {"attribute_name": "\u66f8\u8a8c\u60c5\u5831", "attribute_value_mlt": [{"bibliographicIssueDates": {"bibliographicIssueDate": "2013-10", "bibliographicIssueDateType": "Issued"}, "bibliographicIssueNumber": "1", "bibliographicPageEnd": "55", "bibliographicPageStart": "49", "bibliographicVolumeNumber": "66", "bibliographic_titles": [{"bibliographic_title": "\u65b0\u6f5f\u5927\u5b66\u8fb2\u5b66\u90e8\u7814\u7a76\u5831\u544a"}, {"bibliographic_title": "\u65b0\u6f5f\u5927\u5b66\u8fb2\u5b66\u90e8\u7814\u7a76\u5831\u544a", "bibliographic_titleLang": "en"}]}]}, "item_7_description_4": {"attribute_name": "\u6284\u9332", "attribute_value_mlt": [{"subitem_description": "\u30d5\u30ed\u30fc\u30c6\u30a3\u30f3\u30b0\u30bf\u30a4\u30d7\u306e\u982d\u9996\u5de5\u306e\u5b89\u5b9a\u6027\u306f\u3001\u56fa\u5b9a\u5830\u4e0b\u306e\u6cb3\u5e8a\u7802\u792b\u3092\u901a\u904e\u3059\u308b\u6d78\u900f\u6d41\u306b\u3088\u308b\u52d5\u6c34\u3053\u3046\u914d\u3068\u63da\u5727\u529b\u5206\u5e03\u306b\u652f\u914d\u3055\u308c\u308b\u3002\u6cb3\u5e8a\u7802\u792b\u3092\u901a\u904e\u3059\u308b\u6d78\u900f\u6d41\u3092\u4e88\u6e2c\u3059\u308b\u305f\u3081\u306b\u306f\u3001\u305d\u306e\u900f\u6c34\u6027\u3092\u9069\u5207\u306b\u8a55\u4fa1\u3057\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3002\u3057\u304b\u3057\u3001\u6cb3\u5e8a\u7802\u792b\u306f\u3001\u6700\u5927\u7c92\u5f84\u304c\u6570\u767emm \u306b\u304a\u3088\u3076\u3053\u3068\u304b\u3089\u3001\u901a\u5e38\u306e\u03c650\u3042\u308b\u3044\u306f\u03c6100mm \u306e\u30e2\u30fc\u30eb\u30c9\u3092\u7528\u3044\u305f\u900f\u6c34\u8a66\u9a13\u3067\u306f\u305d\u306e\u900f\u6c34\u6027\u3092\u6e2c\u5b9a\u3059\u308b\u3053\u3068\u306f\u96e3\u3057\u3044\u3002\u672c\u7814\u7a76\u3067\u306f\u3001\u5927\u7c92\u5f84\u7c92\u5b50\u3092\u542b\u3080\u6cb3\u5e8a\u7802\u792b\u306e\u900f\u6c34\u6027\u306e\u8a66\u9a13\u6cd5\u3092\u63d0\u6848\u3057\u3001\u6e2c\u5b9a\u3057\u305f\u900f\u6c34\u4fc2\u6570\u306b\u57fa\u3065\u304d\u3001\u56fa\u5b9a\u5830\u4e0b\u3067\u751f\u3058\u308b\u6d78\u900f\u7279\u6027\uff08\u52d5\u6c34\u3053\u3046\u914d\u3068\u6c34\u5727\u306e\u5206\u5e03\uff09\u3092\u8abf\u3079\u308b\u3068\u3068\u3082\u306b\u3001\u6cb3\u5e8a\u7802\u792b\u306e\u900f\u6c34\u6027\u3092\u898f\u5b9a\u3059\u308b\u56e0\u5b50\uff08\u7c92\u5f84\uff09\u306b\u3064\u3044\u3066\u8003\u5bdf\u3059\u308b\u3002", "subitem_description_type": "Abstract"}, {"subitem_description": "Hydraulic stability of river weirs (head works) is dominated by hydraulic gradient and uplift pressure caused by seepage flow through riverbed sediment under the weir. To predict the seepage flow through the riverbed sediment, permeability or transmissibility of the riverbed sediment consisting of sand and gravel should be measured properly. As the riverbed sediment includes usually large gravel particles a few hundred millimeters in diameter, it is difficult to use the usual permeability test equipment employed in the usual soil tests to measure coefficient of permeability. In this paper, a new permeability test which employs laboratory water flume test together with numerical parameter estimation is proposed. The coefficient of permeability of the riverbed sediment is determined by the proposed permeability test, and the seepage flow through the riverbed sediment is calculated by numerical non-linear seepage analysis to investigate the hydraulic gradient and the uplift pressure under the base of the base floor. Finally, a hydraulic mean radius of the riverbed sediment is estimated from the coefficient of permeability measured, and is related to grain size distribution of riverbed sediment in order to show the particle size of sand or gravel which dominantly determines the permeability of the riverbed sediment.", "subitem_description_type": "Abstract"}]}, "item_7_full_name_3": {"attribute_name": "\u8457\u8005\u5225\u540d", "attribute_value_mlt": [{"nameIdentifiers": [{"nameIdentifier": "162628", "nameIdentifierScheme": "WEKO"}], "names": [{"name": "Morii, Toshihiro"}]}, {"nameIdentifiers": [{"nameIdentifier": "162629", "nameIdentifierScheme": "WEKO"}], "names": [{"name": "Okoshi, Masahito"}]}, {"nameIdentifiers": [{"nameIdentifier": "162630", "nameIdentifierScheme": "WEKO"}], "names": [{"name": "Suzuki, Tetsuya"}]}, {"nameIdentifiers": [{"nameIdentifier": "162631", "nameIdentifierScheme": "WEKO"}], "names": [{"name": "Kawai, Takayuki"}]}]}, "item_7_publisher_7": {"attribute_name": 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