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

12th ICRM, 975-978.pdf570.07 kBPDF見る/開く

タイトル: Abandoned roadways aged up to 50 years observed in Kushiro Coal Mine, Japan
著者: Fujii, Yoshiaki 著作を一覧する
Sugawara, T. 著作を一覧する
Kodama, J. 著作を一覧する
Ishijima, Y. 著作を一覧する
Kiyama, T. 著作を一覧する
Takada, M. 著作を一覧する
Ishihara, Y. 著作を一覧する
Kumakura, S. 著作を一覧する
Narita, T. 著作を一覧する
Sawada, M. 著作を一覧する
Nakata, E. 著作を一覧する
キーワード: case studies
coal mines
field measurements
lab testing
nuclear repository
発行日: 2011年 9月
出版者: CRC Press (Taylor & Francis Group)
引用: Harmonising Rock Engineering and the Environment, ISBN: 978-0415804448
開始ページ: 975
終了ページ: 978
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.
記述: 12th ISRM International Congress on Rock Mechanics (Beijing, China, 18-21 October 2011)
Relation (URI):
資料タイプ: bookchapter (author version)
出現コレクション:雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

提供者: 藤井 義明


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