한국지반공학회:학술대회논문집 (Proceedings of the Korean Geotechical Society Conference)
- 한국지반공학회 2006년도 춘계 학술발표회 논문집
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- Pages.34-41
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- 2006
공저변형법에 의한 3차원응력측정 시스템의 개발
Development of 3-Dimensional Stress Measurement System by Bore hole Bottom Deformation Method
- 이기하 ;
- ;
- Lee, Ki-Ha (Division of Structural and Geoterchnical Engineering Graduate school of Engineer, Hokkaido University) ;
- Ishijima, Yoji (Horonobe Research Institute for the Subsurface Environment) ;
- Fujii, Yoshiaki (Research Group of Geoenvironmental Engineering Division of Solid Waste, Resources and Geoenvironmental Engineering Graduate school of Engineer, Hokkaido University)
- 발행 : 2006.03.24
초록
A 3-dimensional stress measurement system based on the bore hole bottom deformation method, which is one of the stress relief methods, was developed. A pilot bore hole is drilled from the bottom of a bore hole and the stress meter is inserted into the pilot bore hole in the method. The bore hole is advanced as an over coring and the deformations in seven directions are measured by cantilever type-sensors. Using the cantilever type-sensors saves time for hardening of glue. No cable connection between the stress meter and a data logger is necessary since a compact data logger is installed in the stress meter. The accuracy of the stress meter was confirmed by a biaxial test for a Shikotsu welded tuff block although in-situ tests have not been carried out yet.
키워드