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タイトルヨミ
キリド ホウメン ニ ミラレル アソ ヨウケツギョウカイガン ノ フウカ ケイタイ ト ソレ ニ モトズク ヨウケツ ギョウカイガン シャメン ノ フウカ オビ コウゾウ
タイトル別表記
Weathered conditions of welded tuff with horizontal eutaxitic textures on excavated slopes, and restored weathering zonation within natural hill slopes, Kyushu, Japan
ファイル
言語
日本語
著者
森山 哲朗
横田 修一郎
内容記述(抄録等)
Weathering zonation of steep slopes of welded tuff characterized by obsidian lenses and systematic cracks were estimated based on styles of weathering conditions and rebound values of Schmidt rock hammer on artificially excavated slopes. Although horizontal microcracks and the slice-shaped fragments that are separated by them are notable within the weathered rocks, the zone of weathering as a whole is quite concordant with natural slopes. No elongation of crack planes under weathering is recognized. The weathered condition changes outward from fresh and massive to disintegrated condition through brecciated zones. These zonations were also confirmed by the distribution of rebound values of the Schmidt rock hammer.
This is due to the lack of brittle behavior usually characteristic of welded tuff. Cracks do not elongate during the process of weathering, and the rate of weathering of each intact rock body is greater than that of crack extension. Consequently, thickness and the dip angle of weathered zones of slopes may be important factors, even in welded tuffs.
掲載誌名
島根大学地球資源環境学研究報告
25
開始ページ
7
終了ページ
15
ISSN
13439774
発行日
2006-12-27
NCID
AA11455176
出版者
島根大学総合理工学部地球資源環境学教室
出版者別表記
Department of Geoscience, Interdisciplinary Faculty of Science and Engineering, Shimane University
資料タイプ
紀要論文
部局
(旧組織)大学院総合理工学研究科
備考
12-14,16+ / 1993+
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