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Title: 破壊後の圧密による岩石の透水性変化に関する研究
Other Titles: Variation in Permeability by Consolidation of Fractured Rocks
Authors: 熊倉, 聡1 Browse this author
石島, 洋二2 Browse this author
藤井, 義明3 Browse this author →KAKEN DB
児玉, 淳一4 Browse this author →KAKEN DB
Authors(alt): Kumakura, Satoshi1
Ishijima, Yoji2
Fujii, Yoshiaki3
Kodama, Jun-ichi4
Keywords: Rock
Issue Date: 25-Mar-2012
Publisher: 資源・素材学会
Journal Title: Journal of MMIJ : journal of the Mining and Materials Processing Institute of Japan
Volume: 128
Issue: 4/5
Start Page: 163
End Page: 172
Publisher DOI: 10.2473/journalofmmij.128.163
Abstract: EDZ (Excavatin Damaged Zone) may appear around underground repositories. Permeability of rock mass in EDZ would be greater than that of surrounding rock mass and sealability of rock mass would be deteriorated. Countermeasures for the sealability deterioration would induce increase in construction and maintenance costs. However, if sealability recovers with time under pressure, the costs would be reduced. The objective of this study is to clarify whether sealability recovery of clastic rocks exists or not. To accomplish the objective, Kimach sandstone, Toyotomi siliceous mudstone and Inada granite were fractured under triaxial compressive stress state and consolidated in the residual strength state. Hydraulic conductivity increased with failure and decreased by the consolidation to 0.3-0.6 times that just after failure or 0.9-1.5 times that before axial loading for Kimachi sandstone. Similar results were obtained for Toyotomi siliceous mudstone where the ratios were 0.4 and 0.6. Ratios for Inada granite were 0.2 and 16. These results mean that a strong sealability recovery was confirmed for the clastic rocks and a weak sealability recovery for Inada granite.
Type: article
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 藤井 義明

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