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  1. H150 博物館
  2. H150a 雑誌掲載論文
  3. 学術雑誌

Long term behavior of hydrogeological structures associated with faulting: An example from the deep crystalline rock in the Mizunami URL, Central Japan

http://hdl.handle.net/2237/25100
http://hdl.handle.net/2237/25100
2346d65d-6edb-4aec-9042-f64709fdb248
名前 / ファイル ライセンス アクション
Ishibashi_et_al_2016.pdf Ishibashi_et_al_2016.pdf ファイル公開:2018/06/01 (520.8 kB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2016-11-25
タイトル
タイトル Long term behavior of hydrogeological structures associated with faulting: An example from the deep crystalline rock in the Mizunami URL, Central Japan
言語 en
著者 Ishibashi, Masayuki

× Ishibashi, Masayuki

WEKO 67488

en Ishibashi, Masayuki

Search repository
Yoshida, Hidekazu

× Yoshida, Hidekazu

WEKO 67489

en Yoshida, Hidekazu

Search repository
Sasao, Eiji

× Sasao, Eiji

WEKO 67490

en Sasao, Eiji

Search repository
Yuguchi, Takashi

× Yuguchi, Takashi

WEKO 67491

en Yuguchi, Takashi

Search repository
アクセス権
アクセス権 open access
アクセス権URI http://purl.org/coar/access_right/c_abf2
権利
言語 en
権利情報 © 2016. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
キーワード
主題Scheme Other
主題 Fault
キーワード
主題Scheme Other
主題 Fracture
キーワード
主題Scheme Other
主題 Damage zone
キーワード
主題Scheme Other
主題 Water-conducting fractures
キーワード
主題Scheme Other
主題 High-level radioactive waste (HLW)
キーワード
主題Scheme Other
主題 Underground Research Laboratory (URL)
抄録
内容記述 Fracture zones around faults (damage zones) in crystalline rocks such as granite can act as significant transport pathways because the permeability of damage zones around active faults will likely be increased by the fracture network system. Understanding the characteristics and long-term behavior of damage zones along smaller scale faults is important for the safety assessment of deep underground facilities in the plutons of an orogenic belt; for example, facilities for the disposal of high-level radioactive waste. Therefore, this paper describes the features of a damage zone and the long-term behavior of its hydrogeological structures associated with faulting in an underground environment based on the results of geological and hydraulic investigations 300 and 500 m below ground level at the Mizunami Underground Research Laboratory, Central Japan. Detailed borehole and gallery wall investigations show the distributions of fractures, fracture fillings, predominant fracture orientations, groundwater inflow points, and hydraulic transmissivity in and around a damage zone. The results indicate that there are three stages in the development of hydrogeological structures. The first stage is the formation of background fractures that formed after the temperature of granitic plutons decreased through the ductile–brittle transition, forming fractures under brittle deformation conditions. The second stage is the formation of a damage zone and corresponding increase in hydraulic permeability as a result of the formation of relatively small fractures associated with faulting. The third stage is the formation of fracture fillings because of the infiltration of groundwater through the damage zone, decreasing the hydraulic permeability of the zone. In the late third stage, unconsolidated clayey fillings form in the large fractures associated with faulting resulting in decreased permeability of the fractures in the damage zone around the fault. These results underline the importance of understanding the development stages to evaluate the effect of faulting in orogenic belt plutons.
言語 en
内容記述タイプ Abstract
出版者
言語 en
出版者 Elsevier
言語
言語 eng
資源タイプ
資源タイプresource http://purl.org/coar/resource_type/c_6501
タイプ journal article
出版タイプ
出版タイプ AM
出版タイプResource http://purl.org/coar/version/c_ab4af688f83e57aa
DOI
関連タイプ isVersionOf
識別子タイプ DOI
関連識別子 https://doi.org/10.1016/j.enggeo.2016.04.026
ISSN
収録物識別子タイプ PISSN
収録物識別子 0013-7952
書誌情報 en : Engineering Geology

巻 208, p. 114-127, 発行日 2016-06
著者版フラグ
値 author
URI
識別子 http://doi.org/10.1016/j.enggeo.2016.04.026
識別子タイプ DOI
URI
識別子 http://hdl.handle.net/2237/25100
識別子タイプ HDL
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