Mechanism of Rock Fall on Slope of Joint Structure. Study on Slope Failure in Cold Region. (3rd Report).
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- NAKAJIMA Iwao
- ulty of Engineering, Hokkaido University
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- NEGISHI Masamitsu
- Civil Engineering Research Ipstitute, Hokkaido Development Bureau
Bibliographic Information
- Other Title
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- 節理構造岩盤斜面における落石の発生機構 寒冷地における岩盤斜面崩壊に関する研究 (第3報)
- カンレイチ ニ オケル ガンバン シャメン ホウカイ ニ カンスル ケンキュウ
- Study on Slope Failure in Cold Region (3rd Report)
- 寒冷地における岩盤斜面崩壊に関する研究 (第3報)
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Abstract
In the cold region of Japan, many roads constructed under steep slopes are in danger of rock falls. In thiswork, the occurrence mechanism of rock fall was considered theoretically to find the proper prevention measure.<BR>Practically, the thermal deformation of a rock plate on slope was calculated on the basis of the mechanicalmodel. In this model there was a cohesive joint between the rock plate and the slope, and a length of crack propagatedalong the joint from the upper end. There was no or a piece of rock in the crack. Next, the energy releaserate was calculated by applying the method of linear fracture mechanics, and the stress intensity factor was investigatedby changing a temperature gradient, an angle of slope and a thickness of the rock plate as a parameter.<BR>Consequently, it was proved that the occurrence condition of rock fall was satisfied more easily correspondingto an increase of the above parameters. Furthermore, it was clarified that the occurrence frequency of rockfall became highest at the term when the temperature gradient became steepest.
Journal
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- Journal of the Japan Society of Engineering Geology
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Journal of the Japan Society of Engineering Geology 35 (3), 93-103, 1994
Japan Society of Engineering Geology
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Details 詳細情報について
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- CRID
- 1390282679070500480
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- NII Article ID
- 110003334730
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- NII Book ID
- AN00026635
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- ISSN
- 18840973
- 02867737
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- NDL BIB ID
- 3889569
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed