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タイトル: | Permeability of Granite Including Macro-Fracture Naturally Filled with Fine-Grained Minerals |
著者: | Nara, Yoshitaka https://orcid.org/0000-0002-5717-1420 (unconfirmed) Kato, Masaji Niri, Ryuhei Kohno, Masanori Sato, Toshinori Fukuda, Daisuke Sato, Tsutomu Takahashi, Manabu |
著者名の別形: | 奈良, 禎太 |
キーワード: | Permeability granite fracture clay mineral vein |
発行日: | Mar-2018 |
出版者: | Springer International Publishing |
誌名: | Pure and Applied Geophysics |
巻: | 175 |
号: | 3 |
開始ページ: | 917 |
終了ページ: | 927 |
抄録: | Information on the permeability of rock is essential for various geoengineering projects, such as geological disposal of radioactive wastes, hydrocarbon extraction, and natural hazard risk mitigation. It is especially important to investigate how fractures and pores influence the physical and transport properties of rock. Infiltration of groundwater through the damage zone fills fractures in granite with fine-grained minerals. However, the permeability of rock possessing a fracture naturally filled with fine-grained mineral grains has yet to be investigated. In this study, the permeabilities of granite samples, including a macro-fracture filled with clay and a mineral vein, are investigated. The permeability of granite with a fine-grained mineral vein agrees well with that of the intact sample, whereas the permeability of granite possessing a macro-fracture filled with clay is lower than that of the macro-fractured sample. The decrease in the permeability is due to the filling of fine-grained minerals and clay in the macro-fracture. It is concluded that the permeability of granite increases due to the existence of the fractures, but decreases upon filling them with fine-grained minerals. |
著作権等: | This is a post-peer-review, pre-copyedit version of an article published in 'Pure and Applied Geophysics'. The final authenticated version is available online at: http://dx.doi.org/10.1007/s00024-017-1704-x. The full-text file will be made open to the public on 01 March 2019 in accordance with publisher's 'Terms and Conditions for Self-Archiving'. This is not the published version. Please cite only the published version. この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。 |
URI: | http://hdl.handle.net/2433/230347 |
DOI(出版社版): | 10.1007/s00024-017-1704-x |
出現コレクション: | 学術雑誌掲載論文等 |
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