書誌事項
- タイトル別名
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- Poroelastic Coefficients for Siliceous Rocks Distributed in the Horonobe Area, Hokkaido, Japan
- 幌延地域に分布する珪質岩を対象とした間隙弾性パラメータの取得と室内試験法の提案
- ホロノベ チイキ ニ ブンプ スル ケイシツガン オ タイショウ ト シタ カンゲキ ダンセイ パラメータ ノ シュトク ト シツナイ シケンホウ ノ テイアン
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Measurements of poroelastic coefficients of Horonobe siliceous rock, which constitutes the strata of the JAEA underground research facility, has been conducted using servo-controlled triaxial testing apparatus. The rock specimens were prepared from the cores obtained from the boreholes which penetrate the Koetoi formation and Wakkanai formation. Depth of cores varies from 222 to 599m. Following are the main results:<BR>1) Triaxial testing method, by which the rock test piece is axially loaded under constrained circumferential strain condition, has been developed to determine the poroelastic coefficients. <BR>2) The values of the undrained bulk modulus Ku, which were determined by two different methods, one is direct measurement and another is indirect evaluation using several coefficients, coincides each other for the rock obtained from the Koetoi formation, indicating that the measuring system is reliable.<BR>3) The relationship between poroelastic coefficient and the depth from which the testing sample is obtained has been studied and the results indicate that, the ratio Ku/K varying from 4 to 15 is inversely proportional to the depth. Skempton's coefficient B slightly decreases with depth and Biot-Willis coefficient α exceeding 0.95 is not dependent to depth.<BR>4) Skempton's coefficient B slightly decreases with increase of the confining pressure. On the other hand, undrained bulk modulus Ku increases with confining pressure.<BR>5) Although the poloelasticity theory is well applicable to the rock of Koetoi formation, its applicability is problematic to the rock of Wakkanai formation.
収録刊行物
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- 資源と素材
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資源と素材 127 (3), 132-138, 2011
一般社団法人 資源・素材学会
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詳細情報 詳細情報について
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- CRID
- 1390282680250430720
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- NII論文ID
- 10027793377
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- NII書誌ID
- AA12188381
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- COI
- 1:CAS:528:DC%2BC3MXnvVeisLo%3D
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- ISSN
- 18840450
- 18816118
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- NDL書誌ID
- 11023757
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可