| Project/Area Number |
02555130
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| Research Category |
Grant-in-Aid for Developmental Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
資源開発工学
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| Research Institution | Hokkaido University |
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Principal Investigator |
NAKAJIMA Iwao Hokkaido University Fac. of Engineering, Professor, 工学部, 教授 (50001243)
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| Co-Investigator(Kenkyū-buntansha) |
HONDA Hiroo Kankyo-chishitsu Engineering Corporation, Chief Engineer, 技術部長
INABA Tsutomu Nishimatsu Technical Research Institute, Chief Research Worker, 技術研究部, 主任研究員
NEGISHI Masamitsu The Civil Engineering Research Institute, Hokkaido Kaihatsu-Kyoku, Laboratory Di, 開発土木研究所, 研究室長
UJIHIRA Masayuki Hokkaido University Fac. of Engineering, Associate Professor, 工学部, 助教授 (90001990)
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| Project Period (FY) |
1990 – 1992
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| Project Status |
Completed (Fiscal Year 1992)
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| Budget Amount *help |
¥12,900,000 (Direct Cost: ¥12,900,000)
Fiscal Year 1992: ¥1,500,000 (Direct Cost: ¥1,500,000)
Fiscal Year 1991: ¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 1990: ¥9,300,000 (Direct Cost: ¥9,300,000)
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| Keywords | Landslide / Acoustic emissin method / High sensitivity / Sliding mass / Acoustic emission monitoring rod / Landslide measurement / Sliding surface / 抑止対策 / 斜面崩壊 / すべり面深さ / 一次元位置標定 |
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| Research Abstract |
Generally, it is impossible to detect directly acoustic emissions from the sliding mass because the flow slide of loose cohesionless materials is dominant in the sliding surface. Therefore, a new device for the landslide measurement, the acoustic emission monitoring rod, has been developed in this project. This monitoring rod is composed mainly of the composite materials of rosin and glass fiber moulded in a steel pipe and generates peculiar acoustic emissions in proportion to the deformation of rod. Practically, this monitoring rod is installed in a borehole through the sliding surface. The acoustic emissions are detected by the transducers fixed to both ends of the rod and are analyzed by the monitoring instrument designed specially for the landslide measurement.
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