| Project/Area Number |
21360219
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Geotechnical engineering
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| Research Institution | Kitami Institute of Technology |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
HACHIKUBO Akihiro 北見工業大学, 工学部, 准教授 (50312450)
KAWAGUCHI Takayuki 北見工業大学, 工学部, 准教授 (20310964)
片岡 沙都紀 函館工業高等専門学校, 環境都市工学科, 助教 (50552080)
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| Co-Investigator(Renkei-kenkyūsha) |
SHOJI Hitoshi 北見工業大学, 工学部, 教授 (50201562)
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| Research Collaborator |
KATAOKA Satsuki 函館工業高等専門学校, 助教 (50552080)
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| Project Period (FY) |
2009 – 2011
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| Project Status |
Completed (Fiscal Year 2011)
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| Budget Amount *help |
¥17,940,000 (Direct Cost: ¥13,800,000、Indirect Cost: ¥4,140,000)
Fiscal Year 2011: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2010: ¥8,320,000 (Direct Cost: ¥6,400,000、Indirect Cost: ¥1,920,000)
Fiscal Year 2009: ¥6,890,000 (Direct Cost: ¥5,300,000、Indirect Cost: ¥1,590,000)
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| Keywords | 海底・湖底堆積土 / ガスハイドレート / 試料の乱れ / 溶存ガス / 応力解放 / 海洋資源 / 環境変動 / 地盤工学 / 物性試験 / メタンハイドレート / 斜面安定 / 環境恋動 |
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| Research Abstract |
Core samplings were conducted from sea bottom grounds, where shallow gas hydrates existed. Some kinds of mechanical tests were performed for the core samples on board. To evaluate the sample quality, the relations between the concentration of dissolved gas and the strength were also examined. Moreover, laboratory tests which simulate the stress relief during the sampling were also performed. Test results showed that the strength of soils become lower with the increase 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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