Abandoned roadways aged up to 50 years observed in Kushiro Coal Mine, Japan

Fujii, Yoshiaki; Sugawara, T.; Kodama, J. et al.

2011, 975-978

Permalink : https://hdl.handle.net/2115/47483

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アクセス権
open access
URI
https://hdl.handle.net/2115/47483
タイトル
Abandoned roadways aged up to 50 years observed in Kushiro Coal Mine, Japan
著者
Fujii, Yoshiaki ; Sugawara, T. ; Kodama, J. ; Ishijima, Y. ; Kiyama, T. ; Takada, M. ; Ishihara, Y. ; Kumakura, S. ; Narita, T. ; Sawada, M. ; Nakata, E.
e-Rad_Researcher
70192309
著者名
Fujii, Yoshiaki
著者名
Sugawara, T.
著者名
Kodama, J.
著者名
Ishijima, Y.
著者名
Kiyama, T.
著者名
Takada, M.
著者名
Ishihara, Y.
著者名
Kumakura, S.
著者名
Narita, T.
著者名
Sawada, M.
著者名
Nakata, E.
言語
英語
キーワード
case studies
coal mines
field measurements
lab testing
monitoring
nuclear repository
発行日
2011-09
出版者
CRC Press (Taylor & Francis Group)
ページ
975-978
記述
12th ISRM International Congress on Rock Mechanics (Beijing, China, 18-21 October 2011)
抄録
95 abandoned old roadways up to 50 years old and 300 m deep were observed at Kushiro Coal Mine. Large plastic deformations as roof deflection and/or floor heave closed most roadways although a few roadways were remain open. Such in-situ measurements as Rayleigh wave velocity, permeability etc. were carried out. Rayleigh wave velocity in the closed roadway was approx. half the virgin rock mass. Permeability of closed roadway was 40 times greater than that for virgin rock mass. This suggests that 1/40 sealability can be expected even a rock cavern in clastic rocks completely collapsed. This would be much better than rock cavern in crystalline rocks in which much less sealability is expected when completely collapsed.
資源タイプ
図書（部分）
出版タイプ
Accepted Manuscript
関連情報
URI
http://www.taylorandfrancis.com/books/details/9780415804448/
関連情報 (isPartOf)
Title
Harmonising Rock Engineering and the Environment, ISBN: 978-0415804448