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  1. 紀要論文
  2. 琉球大学農学部学術報告
  3. 44号
  1. 部局別インデックス
  2. 農学部

移動量の大きい地すべりの安定解析

http://hdl.handle.net/20.500.12000/3715
http://hdl.handle.net/20.500.12000/3715
628d9f81-21d4-4913-88ff-b7ec559d1f0a
名前 / ファイル ライセンス アクション
KJ00000161836.pdf KJ00000161836.pdf
Item type デフォルトアイテムタイプ(フル)(1)
公開日 2008-02-14
タイトル
タイトル 移動量の大きい地すべりの安定解析
言語 ja
作成者 宜保, 清一

× 宜保, 清一

ja 宜保, 清一

井上, 英将

× 井上, 英将

ja 井上, 英将

周, 亜明

× 周, 亜明

ja 周, 亜明

中村, 真也

× 中村, 真也

ja 中村, 真也

Gibo, Seiichi

× Gibo, Seiichi

en Gibo, Seiichi

Inoue, Hidemasa

× Inoue, Hidemasa

en Inoue, Hidemasa

Zhou, Yaming

× Zhou, Yaming

en Zhou, Yaming

Nakamura, Shinya

× Nakamura, Shinya

en Nakamura, Shinya

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
主題
言語 ja
主題Scheme Other
主題 地すべり
言語 ja
主題Scheme Other
主題 安定解析
言語 ja
主題Scheme Other
主題 残留強度
言語 ja
主題Scheme Other
主題 回復強度
内容記述
内容記述タイプ Other
内容記述 移動量の大きい浅層すべりと深層すべりの再発生時安定解析に残留強度および回復強度を適用し, 以下の知見を得た。(1)薛城鎮の三次すべりは層厚が8m∿10mの浅層すべりである。再発生時の安定解析に残留強度のみを適用した場合, 安全率がF_s=0.91となり, 斜面の安定度が過小に評価された。残留強度に加え, すべり面の低い土かぶり圧領域に回復強度を適用することによって安定度が合理的に評価できた。(2)亀の瀬地すべりの峠地区は峠ブロックと稲葉ブロックからなり,層厚が40m∿70mの深層すべりである。安定解析では, 高い土かぶり圧領域の全体に占める割合が極端に大きいため, 高い土かぶり圧領域の全体に占める割合が極端に大きいため, 残留強度のみによる安定解析を行い,合理的な結果を得た。峠ブロックは安全率はF_s=0.84となり, 稲葉ブロックによる抑止効果が約16%の安全率に相当していることが明らかになった。
内容記述タイプ Other
内容記述 The large moved landslides are usually analysed assuming that the strength along the entire length of a slip surface droped to the residual value. However, in most cases, the safety factor is underestimated. The test of large displacement shear-re-consolidation-re-shear in the present experiment indicated the recovery from the residual strength after re-consolidation under the low normal stress such as 30kPa∿100kPa. The residual and recovered strength parameters were applied in the stability analysis for the shallow slide and deep slide of the large movement. The tertiary slide of the Xuechengzhen landslide is shallow, about 8m to 10m deep. Application of the residual strength to the stability analysis gave the safety factor of 0.91,which was underestimated. Higher reasonable strength parameters were obtained by using the recovered strength in the shallow slipsurface zone having low overburden pressure, and the residual strength in the deep slip-surface zone having high overburden pressure. The Toge unit in the Kamenose landeslide is deep, whilst, the thickness of the slide is 40m to 70m. Most part of the slip-surface zone is subjected to high overburden pressure. Thus, the stability analysis based on only the residual strength led to a result which was quite satisfactory.
内容記述タイプ Other
内容記述 紀要論文
出版者
言語 ja
出版者 琉球大学農学部
言語
言語 jpn
資源タイプ
資源タイプ departmental bulletin paper
資源タイプ識別子 http://purl.org/coar/resource_type/c_6501
出版タイプ
出版タイプ VoR
出版タイプResource http://purl.org/coar/version/c_970fb48d4fbd8a85
識別子
識別子 http://hdl.handle.net/20.500.12000/3715
識別子タイプ HDL
収録物識別子
収録物識別子タイプ ISSN
収録物識別子 0370-4246
収録物識別子タイプ NCID
収録物識別子 AN00250548
収録物名
言語 ja
収録物名 琉球大学農学部学術報告
書誌情報
号 44, p. 275-280
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