書誌事項
- タイトル別名
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- Mechanism of Toppling of Long Columnar in Sounkyo Welded Tuff. Study on Slope Failure in Cold Region(2nd Report).
- 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 (2nd Report)
- 寒冷地における岩盤斜面崩壊に関する研究 (第2報)
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抄録
On the slope of joint structure at Sounkyo Gorge in Hokkaido, toppling of a long columnar of welded tuff has occurred frequently and the road has hazard of rock fall. In this study, the occurrence mechanism of the toppling was considered theoretically on the basis of the observational results of the fracturing processes.<BR>At first, it was proved from the analyses on the thermal deformation of a rock columnar that a small and a large stone fell alternately in the opened joint on the back side of the columnar in response to the seasonal change in temperature gradient and that the inclination of the columnar increased gradually with the lapse of time.<BR>Secondly, it was clarified from the investigation on the hook-shaped crack propagations at the root of the columnar that toppling was caused when the rotational center of the inclined columnar moved from the outside to the inside just over the centroid in the processes of compressive fracture of the outside part. Additionally, the long duration of acoustic emission activity just before toppling has supported the validity of the theoretical considerations.
収録刊行物
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- 応用地質
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応用地質 35 (1), 1-11, 1994
一般社団法人 日本応用地質学会
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詳細情報 詳細情報について
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- CRID
- 1390001204093918592
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- NII論文ID
- 110003356475
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- NII書誌ID
- AN00026635
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- ISSN
- 18840973
- 02867737
- http://id.crossref.org/issn/02867737
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- NDL書誌ID
- 3875954
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可