岩石の圧縮破壊過程とそのメカニズムに関する研究

岩石压缩断裂过程及其机理研究

• 批准号: 06452361
• 负责人: KANEKO Katsuhiko
• 金额: $ 0.77万
• 依托单位: Kumamoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1994
• 资助国家: 日本
• 起止时间: 1994 至 1995
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-06452361/
• 关键词: Fracture of rock; Post failure behavior; Class II failure; Crack propagation; Rock fracture mechanics; 岩石力学; ぜい性破壊; クラック; 破壊モード; き裂の可視化; 画像処理

A.series of theoretical and experimental studies on the fracture process and mechanism of rock in compression has been carried out.Firstly, the post failure behavior of rock in compression has been analyzed by the Displacement Discontinuity Method and the process of crack propagation has been clarified. From this result, it is made clear that the critical value of Crack shear Displacement (CSD) is a dominant factor in contoroling the fracture process of rock. The crack propagate with the complex modes of I and II in the case that the critical value of CSD is relatively small and then class II behavior is cbserved. On the other hand, the mode II cracks growth in the case that the critical value is relatively large and then class I behavior is observed.Secondary, the crack propagation process has been observed by the visualization and image processing techniques. It is made clear that class II behavior is observed in the case that the complex mode crack with mode I and mode II propagates in rock specimen. This result agree with that estimated by the numerical simulation.It is conclude that mode of crack is an important factor in contoroling the post failure behavior of rock in compression and that the class II behavior of rock is characterized by the complex mode crack with mode I and II.

本文对岩石压缩破坏过程和机理进行了一系列的理论和实验研究。首先，用位移不连续法分析了岩石压缩破坏后的行为，阐明了裂纹的扩展过程。结果表明，裂纹剪切位移(CSD)临界值是控制岩石断裂过程的主要因素。在CSD临界值较小的情况下，裂纹以I型和II型复合模式扩展，表现为II型行为。另一方面，在临界值较大的情况下，II型裂纹扩展，然后观察到I类行为。其次，通过可视化和图像处理技术观察了裂纹的扩展过程。结果表明，当岩样中存在I型和II型复合型裂纹扩展时，存在II型行为。结果表明，裂隙模式是控制岩石压缩破坏后行为的重要因素，岩石的II类行为表现为I型和II型复合型裂纹。

项目成果

金子 勝比呂: "発破における岩石破砕過程の破壊力学的解析" 火薬学会誌. 56. 207-215 (1995)

Katsuhiro Kaneko：“爆破过程中岩石断裂过程的断裂力学分析”《炸药学会杂志》56。207-215（1995）。

金子勝比古: "発破における岩石廊砕過程の破壊力学的解析" 火薬学会誌. 56. 207-215 (1995)

Katsuhiko Kaneko：“爆破过程中岩石破碎过程的断裂力学分析”《炸药学会杂志》56. 207-215 (1995)。

金子勝比古: "岩盤斜面破壊における初期応力の影響" 資源・素材学会誌. 11. 761-766 (1995)

Katsuhiko Kaneko：“初始应力对岩石边坡破坏的影响”日本自然资源与材料学会杂志 11. 761-766 (1995)。

金子 勝比呂: "岩盤斜面破壊における初期応力の影響" 資源・素材学会誌. 111. 761-766 (1995)

Katsuhiro Kaneko：“初始应力对岩石边坡破坏的影响”日本自然资源与材料学会杂志 111. 761-766 (1995)。

KANEKO,K., NOGUCHI,Y., KOGA,M.and HIRAYAMA,T.: "Effect of initial rock stress on slope failure." J.of MMIJ. Vol, 111, No.11. 761-766 (1995)

KANEKO,K.、NOGUCHI,Y.、KOGA,M. 和 HIRAYAMA,T.：“初始岩石应力对边坡破坏的影响”。