{"@context":{"@vocab":"https://cir.nii.ac.jp/schema/1.0/","rdfs":"http://www.w3.org/2000/01/rdf-schema#","dc":"http://purl.org/dc/elements/1.1/","dcterms":"http://purl.org/dc/terms/","foaf":"http://xmlns.com/foaf/0.1/","prism":"http://prismstandard.org/namespaces/basic/2.0/","cinii":"http://ci.nii.ac.jp/ns/1.0/","datacite":"https://schema.datacite.org/meta/kernel-4/","ndl":"http://ndl.go.jp/dcndl/terms/","jpcoar":"https://github.com/JPCOAR/schema/blob/master/2.0/"},"@id":"https://cir.nii.ac.jp/crid/1390001205201177344.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.3313/jls.47.138"}},{"identifier":{"@type":"NDL_BIB_ID","@value":"10728681"}},{"identifier":{"@type":"URI","@value":"http://id.ndl.go.jp/bib/10728681"}},{"identifier":{"@type":"URI","@value":"https://ndlsearch.ndl.go.jp/books/R000000004-I10728681"}},{"identifier":{"@type":"NAID","@value":"10026424514"}}],"dc:title":[{"@language":"en","@value":"Shear strength in first-time activation and reactivation of Shimajiri-mudstone landslide-An example of Asato landslide, Okinawa, Japan-"},{"@language":"ja","@value":"島尻層群泥岩地すべりの発生・再滑動に関与する強度―沖縄，安里地すべりを事例として―"},{"@language":"ja-Kana","@value":"シマジリソウグン デイガン ジスベリ ノ ハッセイ サイカツドウ ニ カンヨ スル キョウド オキナワ アサト ジスベリ オ ジレイ ト シテ"}],"dcterms:alternative":[{"@language":"en","@value":"-An example of Asato landslide, Okinawa, Japan-"},{"@language":"ja","@value":"-沖縄, 安里地すべりを事例として-"}],"dc:language":"ja","description":[{"type":"abstract","notation":[{"@language":"en","@value":"This paper discussed the shear strengths along the slip surface in the first-time activation and reactivation of Asato landslide, which is a quasi-first activated slide in the area of Shimajiri-mudstone, Okinawa, Japan and its stability analysis utilizing the shear strength characteristics. It is considered that in the reactivation, residual strength is applicable in most of the slip surface area, while the remaining part of it is at the fully softened strength. In the stability analysis during sliding subsequent to the first-time activation, using the residual strength as the average shear strength that acts along the slip surface for the entire slip surface enables estimation of the position of groundwater level. For the first-time activation, the average shear strength acting along the slip surface (c´, φ´) was calculated through the application of the estimated groundwater level. The parameters of c´=26.8kN/m<sup>2</sup>, φ´=22.9° and the residual factor R=0.49 indicate that both the peak (fractured-mudstone) and the residual (structural weak planes) strength prevail in the slip surface area. The c´- tanφ´ diagrams of stability analysis, which are constructed for the first-time activation and reactivation of the landslide, are beneficial for the control works for landslide. These results can be valuable in the risk evaluation of the quasi-first activated slides."},{"@language":"ja","@value":"島尻層群泥岩準初生地すべりの安里地すべりを事例として, せん断強度特性を活用した安定解析により, 発生および再滑動時のすべり面の強度について検討した。<br>地すべり再滑動では, すべり面の大部分に残留強度が, 一部域に完全軟化強度が関与する。地すべり発生直後 (移動時) の安定解析において, すべり面平均強度として残留強度を充てることにより地下水位の推定が可能になる。すべり発生 (初生) では, 推定地下水位を適用することにより, すべり面平均強度 (c′, φ′) を算出できた。c′=26.8kN/m<sup>2</sup>, φ′=22.9°と残留係数R=0.49は, すべり面域にピーク強度 (破砕泥岩) と残留強度 (構造的弱面) の関与を示す。地すべりの発生・再滑動に対して得られたc′-tanφ′図は, 防止対策を講じる上で有益である。これらの成果は準初生地すべりの合理的な危険度評価に繋がるものである。"}],"abstractLicenseFlag":"disallow"}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1420282801205575424","@type":"Researcher","personIdentifier":[{"@type":"KAKEN_RESEARCHERS","@value":"10794498"},{"@type":"NRID","@value":"1000010794498"},{"@type":"NRID","@value":"9000016667072"},{"@type":"NRID","@value":"9000025024516"},{"@type":"NRID","@value":"9000412156598"},{"@type":"NRID","@value":"9000288817522"},{"@type":"NRID","@value":"9000300227301"},{"@type":"NRID","@value":"9000387913091"},{"@type":"NRID","@value":"9000408953399"},{"@type":"NRID","@value":"9000258256890"},{"@type":"NRID","@value":"9000410507315"},{"@type":"NRID","@value":"9000410507316"},{"@type":"RESEARCHMAP","@value":"https://researchmap.jp/sk-agr"}],"foaf:name":[{"@language":"en","@value":"KIMURA Sho"},{"@language":"ja","@value":"木村 匠"}],"jpcoar:affiliationName":[{"@language":"en","@value":"The United Graduate school of Agricultural Sciences, Kagoshima University"},{"@language":"ja","@value":"鹿児島大学大学院連合農学研究科"}]},{"@id":"https://cir.nii.ac.jp/crid/1410009222395791108","@type":"Researcher","foaf:name":[{"@language":"en","@value":"GIBO Seiichi"},{"@language":"ja","@value":"宜保 清一"}],"jpcoar:affiliationName":[{"@language":"en","@value":"Faculty of Agriculture, University of the Ryukyus"},{"@language":"ja","@value":"琉球大学農学部"}]},{"@id":"https://cir.nii.ac.jp/crid/1420282801207139328","@type":"Researcher","personIdentifier":[{"@type":"KAKEN_RESEARCHERS","@value":"30336359"},{"@type":"NRID","@value":"1000030336359"},{"@type":"NRID","@value":"9000025024514"},{"@type":"NRID","@value":"9000403514480"},{"@type":"NRID","@value":"9000406201965"},{"@type":"NRID","@value":"9000021484295"},{"@type":"NRID","@value":"9000402244672"},{"@type":"NRID","@value":"9000408953398"},{"@type":"NRID","@value":"9000255845701"},{"@type":"NRID","@value":"9000319052190"},{"@type":"NRID","@value":"9000415327524"},{"@type":"NRID","@value":"9000399517482"},{"@type":"NRID","@value":"9000413361215"},{"@type":"NRID","@value":"9000402938973"},{"@type":"NRID","@value":"9000409892562"},{"@type":"NRID","@value":"9000005335349"},{"@type":"NRID","@value":"9000405301930"},{"@type":"RESEARCHMAP","@value":"https://researchmap.jp/shinyanakamura"}],"foaf:name":[{"@language":"en","@value":"NAKAMURA Shinya"},{"@language":"ja","@value":"中村 真也"}],"jpcoar:affiliationName":[{"@language":"en","@value":"Faculty of Agriculture, University of the Ryukyus"},{"@language":"ja","@value":"琉球大学農学部"}]},{"@id":"https://cir.nii.ac.jp/crid/1410001204544157313","@type":"Researcher","personIdentifier":[{"@type":"NRID","@value":"9000002393053"}],"foaf:name":[{"@language":"en","@value":"SASAKI Keizou"},{"@language":"ja","@value":"佐々木 慶三"}],"jpcoar:affiliationName":[{"@language":"ja","@value":"佐々木技術事務所"},{"@language":"en","@value":"Sasaki Consulting Engineer Office"}]},{"@id":"https://cir.nii.ac.jp/crid/1410001204544157312","@type":"Researcher","personIdentifier":[{"@type":"NRID","@value":"9000002392837"}],"foaf:name":[{"@language":"en","@value":"ZHOU Yaming"},{"@language":"ja","@value":"周 亜明"}],"jpcoar:affiliationName":[{"@language":"en","@value":"Nanjyou Gijyutukaihatu Co., Ltd."},{"@language":"ja","@value":"(株) 南城技術開発"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"13483986"},{"@type":"EISSN","@value":"18820034"},{"@type":"NDL_BIB_ID","@value":"000004077520"},{"@type":"ISSN","@value":"13483986"},{"@type":"LISSN","@value":"13483986"},{"@type":"NCID","@value":"AA11837172"}],"prism:publicationName":[{"@language":"en","@value":"Journal of the Japan Landslide Society"},{"@language":"ja","@value":"日本地すべり学会誌"},{"@language":"en","@value":"Journal of the Japan Landslide Society"},{"@language":"en","@value":"Landslides"},{"@language":"en","@value":"J. of the Jpn. Landslide Soc."},{"@language":"ja","@value":"日本地すべり学会誌"}],"dc:publisher":[{"@language":"en","@value":"The Japan Landslide Society"},{"@language":"ja","@value":"公益社団法人 日本地すべり学会"}],"prism:publicationDate":"2010","prism:volume":"47","prism:number":"3","prism:startingPage":"138","prism:endingPage":"146"},"reviewed":"false","url":[{"@id":"http://id.ndl.go.jp/bib/10728681"},{"@id":"https://ndlsearch.ndl.go.jp/books/R000000004-I10728681"}],"availableAt":"2010","foaf:topic":[{"@id":"https://cir.nii.ac.jp/all?q=residual%20strength","dc:title":"residual strength"},{"@id":"https://cir.nii.ac.jp/all?q=peak%20strength","dc:title":"peak strength"},{"@id":"https://cir.nii.ac.jp/all?q=quasi-first%20activated%20slides","dc:title":"quasi-first activated slides"},{"@id":"https://cir.nii.ac.jp/all?q=old%20landslides","dc:title":"old landslides"},{"@id":"https://cir.nii.ac.jp/all?q=stability%20analysis","dc:title":"stability analysis"},{"@id":"https://cir.nii.ac.jp/all?q=%E6%AE%8B%E7%95%99%E5%BC%B7%E5%BA%A6","dc:title":"残留強度"},{"@id":"https://cir.nii.ac.jp/all?q=%E3%83%94%E3%83%BC%E3%82%AF%E5%BC%B7%E5%BA%A6","dc:title":"ピーク強度"},{"@id":"https://cir.nii.ac.jp/all?q=%E6%BA%96%E5%88%9D%E7%94%9F%E5%9C%B0%E3%81%99%E3%81%B9%E3%82%8A","dc:title":"準初生地すべり"},{"@id":"https://cir.nii.ac.jp/all?q=%E6%97%A2%E5%BE%80%E5%9C%B0%E3%81%99%E3%81%B9%E3%82%8A","dc:title":"既往地すべり"},{"@id":"https://cir.nii.ac.jp/all?q=%E5%AE%89%E5%AE%9A%E8%A7%A3%E6%9E%90","dc:title":"安定解析"}],"relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1361137045232139264","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Residual strength of clays in landslides, folded strata and the laboratory"}]},{"@id":"https://cir.nii.ac.jp/crid/1363107371162782336","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Long-Term Stability of Clay 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Parameters"}]},{"@id":"https://cir.nii.ac.jp/crid/1390001204546007168","@type":"Article","relationType":["references","cites"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Methods for Estimating the Parameters of Average Shear Strength alnog the Slip Surface"},{"@value":"平均すべり面強度定数の算定方法について"},{"@language":"ja-Kana","@value":"ヘイキンスベリメン キョウド テイスウ ノ サンテイ ホウホウ ニ ツイテ"}]},{"@id":"https://cir.nii.ac.jp/crid/1390001204546027520","@type":"Article","relationType":["references","cites"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Ring Shear Apparatus for Measuring Residual Strengths and it's Measurement Accuracy"},{"@value":"残留強度測定のためのリングせん断試験装置とその測定精度"},{"@language":"ja-Kana","@value":"ザンリュウ キョウド ソクテイ ノ タメ ノ リング センダン シケン ソウチ"}]},{"@id":"https://cir.nii.ac.jp/crid/1390001205201966976","@type":"Article","relationType":["cites"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Classification of landslide types observed in the area of Shimajiri-mudstone, Okinawa Island-For the risk evaluation of landslide-"},{"@language":"ja","@value":"沖縄，島尻層群泥岩分布地域の地すべり類型区分の試み―地すべりの危険度評価に関連して―"},{"@language":"ja-Kana","@value":"オキナワ シマジリソウグン デイガン ブンプ チイキ ノ ジスベリ ルイケイ クブン ノ ココロミ ジスベリ ノ キケンド ヒョウカ ニ カンレンシテ"}]},{"@id":"https://cir.nii.ac.jp/crid/1390001205202730880","@type":"Article","relationType":["references","cites"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Influence of geometric elements and groundwater level of landslides on the c'-tan.PHI.' diagram of stability analysis"},{"@language":"ja","@value":"地すべりの断面形状と安定解析ｃ′－ｔａｎφ′図の関係"},{"@value":"地すべりの断面形状と安定解析c'-tanφ'図の関係"},{"@language":"ja-Kana","@value":"ジスベリ ノ ダンメン ケイジョウ ト アンテイ カイセキ c tan ファイ ズ ノ カンケイ"}]},{"@id":"https://cir.nii.ac.jp/crid/1390001206555379840","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["cites"],"jpcoar:relatedTitle":[{"@language":"ja","@value":"黒ボク土の粒径分析法"},{"@language":"en","@value":"Method of Particles-Size Analysis of Ando Soils"},{"@language":"ja-Kana","@value":"クロボクド ノ リュウケイ ブンセキホウ"}]},{"@id":"https://cir.nii.ac.jp/crid/1390282679518533376","@type":"Article","relationType":["cites"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Three-Dimensional Stability Analysis Procedure in which the Residual Factor is Incorporated"},{"@value":"残留係数を導入した地すべりの三次元安定解析"},{"@language":"ja-Kana","@value":"ザンリュウ ケイスウ オ ドウニュウ シタ ヂスベリ ノ 3ジゲン アンテイ カイセキ オキナワ チュンジュン ヂスベリ ニ ツイテ"}]},{"@id":"https://cir.nii.ac.jp/crid/1390282679520779392","@type":"Article","relationType":["references","cites"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Stability Analysis Method in Which the Residual Factor is incorporated. Application to the landsides in the Shimajiri mudstone of Okinawa."},{"@value":"残留係数を導入した安定解析法　沖縄島尻層群泥岩地すべりへの適用"}]},{"@id":"https://cir.nii.ac.jp/crid/1390282679521040128","@type":"Article","relationType":["references","cites"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Control of geological structure and parameters of average shear strength along the slip surface in a landslide in the Neogene mudstone in Okinawa."},{"@value":"沖縄，北丘ハイツ地内泥岩すべりにおける地質構造規制とすべり面強度パラメータの算定"},{"@language":"ja-Kana","@value":"オキナワ キタオカ ハイツ チナイ デイガン スベリ ニ オケル チシツ コ"}]},{"@id":"https://cir.nii.ac.jp/crid/1390282679522046464","@type":"Article","relationType":["references","cites"],"jpcoar:relatedTitle":[{"@language":"en","@value":"The Recovered Strength of Landslide Soils and its Relation to the Effective Normal stress"},{"@value":"地すべり土の回復強度と垂直応力の影響"},{"@language":"ja-Kana","@value":"ジスベリド ノ カイフク キョウド ト スイチョク オウリョク ノ エイキョウ"}]},{"@id":"https://cir.nii.ac.jp/crid/1390282679522060544","@type":"Article","relationType":["references","cites"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Recovered Strength of Landslide Soils and its Relationship with Mineralogical Composition"},{"@value":"地すべり土の回復強度と鉱物組成との関係"},{"@language":"ja-Kana","@value":"ジスベリド ノ カイフク キョウド ト コウブツ ソセイ ト ノ カンケイ"}]},{"@id":"https://cir.nii.ac.jp/crid/1390282680177164928","@type":"Article","relationType":["references","cites"],"jpcoar:relatedTitle":[{"@language":"en","@value":"The issue and resolution method of the risk evaluation of landslide in the Shimajiri-mudstone"},{"@language":"ja","@value":"島尻層群泥岩地すべりの危険度評価の課題と解決法"},{"@language":"ja-Kana","@value":"シマジリ ソウグン デイガン ジスベリ ノ キケンド ヒョウカ ノ カダイ ト カイケツホウ"}]},{"@id":"https://cir.nii.ac.jp/crid/1390282680177740160","@type":"Article","relationType":["isReferencedBy","isCitedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Average shear strength parameters along the slip surface of various types of landslides"},{"@language":"ja","@value":"各種地すべり形態におけるすべり面平均強度定数"},{"@value":"Average shear strength parameters along the slip surface of various types of landslides-Shimajiri-mudstone landslides, Okinawa-"}]},{"@id":"https://cir.nii.ac.jp/crid/1390282680178477696","@type":"Article","relationType":["cites"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Characteristics of cross section and occurrence site of the first-activated type landslides in the area of Shimajiri-mudstone, Okinawa Island"},{"@value":"沖縄, 島尻層群泥岩分布地域における初生型地すべりの縦断面形状と発生場の特徴"},{"@language":"ja-Kana","@value":"オキナワ シマジリソウグン デイガン ブンプ チイキ ニ オケル ショセイガタ ジスベリ ノ ジュウダン メンケイジョウ ト ハッセイバ ノ トクチョウ ジスベリ ノ キケンド ヒョウカ ニ カンレン シテ"}]},{"@id":"https://cir.nii.ac.jp/crid/1390282680178496896","@type":"Article","relationType":["references","cites"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Relative risk evaluation of old landslides with slope stability 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