表層型ガスハイドレート賦存海底・湖底地盤から採取した堆積土の土質特性

DOI 被引用文献1件 参考文献6件

書誌事項

タイトル別名
  • Soil properties of sediments obtained from sea and lake-bottom shallow type gas hydrate province
  • - Evaluation of sample disturbance due to exsolution of dissolved gas in pore water -
  • －間隙水溶存ガスの気泡化に伴う堆積土の試料乱れ評価－

抄録

Core samplings were conducted in offshore Sakhalin Island, Sea of Okhotsk, and in Lake Baikal, Russia, where shallow gas hydrates existed. To examine the mechanical properties of sea and lake bottom sediments, the handy vane shear and cone penetration tests were performed for the core samples on board. To evaluate the sample disturbance due to the exsolution of dissolved gas during sampling, the relations between the concentration of dissolved gas in the pore water and the strength were also examined. Moreover, laboratory tests which simulate the stress relief from bringing the samples to the sea or lake surface were also performed. Test results showed that the strength of soils become lower with the increase in degree of gas saturation on both on-board and laboratory tests. It was also showed that the in-situ strength can be estimated roughly from the disturbed sample.

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詳細情報 詳細情報について

  • CRID
    1390282680233349376
  • NII論文ID
    130004482910
  • DOI
    10.3208/jgs.7.503
  • ISSN
    18806341
  • 本文言語コード
    ja
  • データソース種別
    • JaLC
    • Crossref
    • CiNii Articles
    • KAKEN
  • 抄録ライセンスフラグ
    使用不可

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