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

• 宜保 清一

  琉球大学農学部

• 佐々木 慶三

  利根コンサルタント (株)

• 吉沢 光三

  (株) 沖縄技術コンサルタント

• 伊田 茂

  琉球大学農学部

書誌事項

タイトル別名

• Control of geological structure and parameters of average shear strength along the slip surface in a landslide in the Neogene mudstone in Okinawa.
• 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

抄録

In order to increase the accuracy of stability analysis of the first time slide in the bedrock, it is important to clearly perceive the characteristics of geological structure, the residual strength acting on the slickenside surface of discontinuities, and the peak strength of the fractured mudstone in the slip surface zone.<br>Concerning the landslide of the Neogene mudstone discussed in the present report, it was found that the slip surface has been formed by being strongly controlled by the strikes of bedding and fault planes, cutting through the fractured mudstone. The residual and peak strength parameters obtained from the ring shear test and the triaxial compression test were as follows: c_r=7kPa and φ_r=16° for the slickenside surfaces; c_f′=75kPa and φ_f′=36° for the specimens of mudstones having opening cracks; c_f′=95kPa and φ_f=42° for the mudstones having internal cracks and microcracks. For the stability analysis a new method was introduced to assess the parameters of average shear strength along the slip surface, and applying the strength parameters mentioned above, c′=11kPa and φ′=17.5° were obtained.

収録刊行物

• 地すべり

  地すべり 23 (3), 15-20, 1986

  公益社団法人 日本地すべり学会

詳細情報

• CRID: 1390282679521040128
• NII論文ID: 10011872941
• NII論文ID: 130001008611
• NII書誌ID: AN00332562
• DOI: 10.3313/jls1964.23.3_15
• ISSN: 18843956
• ISSN: 02852926
• ISSN: http://id.crossref.org/issn/02852926
• NDL書誌ID: 3115151
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I3115151
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可