Observation of in and out flow from rock specimens and estimation ofthe permeability under the triaxial compression

三轴压缩下岩石样本进出流观测及渗透率估算

• 批准号: 20360404
• 负责人: OKUBO Seisuke
• 金额: $ 7.99万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2008
• 资助国家: 日本
• 起止时间: 2008 至 2010
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20360404/
• 关键词: 岩石; 可視化; 時間依存性; 三軸圧縮試験; 透水係数; 構成方程式; シミュレーション; 強度回復; 三軸ベッセル; 粘弾性; 緩み領域

Variation of the coefficient of permeability with the strength recovery phenomenon was researched experimentally. When investigating the long-term behavior of the underground structures, strength recovery and decrease of the coefficient of permeability are very important. The coefficients of permeability for the original rock specimen, fractured specimen in the progress of strength recovery, and the compacted specimen after the compaction test were investigated experimentally. The coefficient of permeability became small moderately with the increase of the axial load applied in the compaction test. Experimental results from this study showed that the decrease of the coefficient of permeability progressed with strength recovery, which is the preferable trend for the repositories in rock mass.

通过实验研究了渗透系数随强度恢复现象的变化。在研究地下结构的长期行为时，强度恢复和渗透系数的降低非常重要。对原岩试件、强度恢复过程中的断裂试件以及压实试验后的压实试件的渗透系数进行了试验研究。随着压实试验中施加的轴向载荷的增加，渗透系数适度变小。本研究的实验结果表明，随着强度恢复，渗透系数逐渐减小，这对于岩体储集层来说是较好的趋势。

项目成果

Long-term creep of water-saturated tuff under uniaxial compression.

单轴压缩下饱和水凝灰岩的长期蠕变。

• 发表时间: 2010
• 作者: S.Okubo; K.Fukui; K.Hashiba
• 通讯作者: K.Hashiba

DEVELOPMENT OF A TRANSPARENT TRIAXIAL CELL AND OBSERVATION OF ROCK DEFORMATION IN COMPRESSION AND CREEP TESTS

透明三轴单元的研制及压缩和蠕变试验中岩石变形的观察

• 发表时间: 2008
• 作者: Seisuke Okubo

Uniaxial Tensile and Compressive Testing of Sprayed Steel Fiber-reiforced Concrete

喷射钢纤维混凝土单轴拉伸和压缩试验

• 发表时间: 2008
• 作者: S.Okubo; K.Fukui; Q.Yang; T.Ochi
• 通讯作者: T.Ochi

PREDICTION OF THE ROCK PROPERTIES AHEAD OF A TUNNEL FACE BY PERCUSSIVE LONG-HOLE DRILLING

冲击式深孔钻进隧道掌子面岩石特性预测

• 发表时间: 2008
• 作者: M. YAMASHITA

岩盤の長期挙動と地下構造物の長期利用

岩体的长期行为与地下结构的长期使用

• 发表时间: 2008
• 作者: 羽柴公博