EVALUATION OF SCALE EFFECTS ON HYDRAULIC CHARACTERISTICS OF FRACTURED ROCK USING FRACTURE NETWORK MODEL

• IJIRI Yuji

  JAPAN SOCIETY OF CIVIL ENGINEERS

• SAWADA Atsushi

  核燃料サイクル開発機構 東海事業所

• SAKAMOTO Kazuhiko

  検査開発株式会社 東海事業所

• UCHIDA Masahiro

  核燃料サイクル開発機構 東海事業所

• ISHIGURO Katsuhiko

  核燃料サイクル開発機構 東海事業所

• UMEKI Hiroyuki

  核燃料サイクル開発機構 現在 原子力発電環境整備機構 技術部

• OHNISHI Yuzo

  京都大学 工学研究科土木システム工学

Bibliographic Information

Other Title

• 割れ目ネットワークモデルの水理特性に及ぼす割れ目スケール効果の影響
• ワレメ ネットワーク モデル ノ スイリ トクセイ ニ オヨボス ワレメ スケール コウカ ノ エイキョウ

Abstract

It is important to take into account scale effects on fracture geometry if the modeling scale is much larger than the in-situ observation scale. The scale effect on fracture trace length, which is the most scale dependent parameter, is investigated using fracture maps obtained at various scales in tunnel and dam sites. We found that the distribution of fracture trace length follows negative power law distribution in regardless of locations and rock types. The hydraulic characteristics of fractured rock is also investigated by numerical analysis of discrete fracture network (DFN) model where power law distribution of fracture radius is adopted. We found that as the exponent of power law distribution become larger, the hydraulic conductivity of DFN model increases and the travel time in DFN model decreases.

Journal

• Doboku Gakkai Ronbunshu

  Doboku Gakkai Ronbunshu 2001 (694), 179-194, 2001-12-21

  Japan Society of Civil Engineers

Keywords

• scale effect
• trace length
• power law distribution
• discrete fracture network model
• granitic rock

Details

• CRID: 1390001205601597440
• NII Article ID: 130003984037
• NII Article ID: 10007461997
• NII Book ID: AN10014020
• DOI: 10.2208/jscej.2001.694_179
• ISSN: 18827187
• ISSN: 02897806
• ISSN: http://id.crossref.org/issn/02897806
• NDL BIB ID: 6032546
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I6032546
• Web Site: https://www.jstage.jst.go.jp/article/jscej1984/2001/694/2001_694_179/_pdf
• Data Source:
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  • CiNii Articles
• Abstract License Flag: Disallowed