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Effect of Temperature and Confining Pressure on Permeability during Deformation and Failure of Shikotsu Welded Tuff

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タイトル: Effect of Temperature and Confining Pressure on Permeability during Deformation and Failure of Shikotsu Welded Tuff
著者: Alam A.K.M., Badrula 著作を一覧する
Niioka, Masaki 著作を一覧する
Fujii, Yoshiaki 著作を一覧する
Kodama, Jun-ichi 著作を一覧する
Sugawara, Takayuki 著作を一覧する
キーワード: THM
Permeability
Consolidation
Compression
Welded tuff
発行日: 2012年10月15日
出版者: Korean Society for Rock Mechanics
誌名: Proceedings of the 7th Asian Rock Mechanics Symposium
巻: 7
開始ページ: 563
終了ページ: 572
抄録: Permeability variation during deformation and failure in triaxial test was considered for Shikotsu welded tuff. Pure water saturated cylindrical test specimens of 30 mm in diameter and length of 60 mm with constant flow rate method at 0.3 ml/min was introduced for compression, with strain rate of 10-5 s-1 on the consolidated samples under 1 MPa, 5 MPa, 10 MPa and 15 MPa for 24 hours until the axial strain reached at 10% in 22ºC and 80ºC. Permeability at the end of 15 MPa consolidation was lower than those of under 1-10 MPa. In compression (i) permeability basically decreased with slight disturbances around peak load points due to rapid volumetric change (ii) under 1 MPa the permeability was larger, compare to 5-15 MPa confining pressure at 22ºC (iii) no apparent confining pressure dependency was observed at 80ºC. The permeability was lower at 80ºC than 22ºC. However, more water flow is expected for the same pore pressure gradient at 80ºC due to lower viscosity of water.
記述: ARMS7: 7th Asian Rock Mechanics Symposium. The theme of the Symposium is The Present and Future of Rock Engineering. 15-19 October 2012. COEX, Seoul, Korea.
資料タイプ: proceedings (author version)
URI: http://hdl.handle.net/2115/56180
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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