| Budget Amount *help |
¥10,140,000 (Direct Cost: ¥7,800,000、Indirect Cost: ¥2,340,000)
Fiscal Year 2010: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2009: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2008: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
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| Research Abstract |
Down-hole triaxial test method was proposed for the geotechnical investigation of gas hydrate layers. Some relevant basic technologies were studied regarding (1) instrumentation technologies, apparatus, and multi-step loading test. The results demonstrated that (1) strain gages on the rubber membrane are appropriate for local deformation measurement, (2) some devices were developed for reliable fixing of rubber membrane and for suitable specimen recovery, and (3) multi-step loading with increasing confining stresses was found preferable.
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