THREE DIMENSIONAL VISUALIZATION OF ROCK FRACTURING PROCESS

岩石破裂过程的三维可视化

• 批准号: 08455487
• 负责人: KANEKO Katsuhiko
• 金额: $ 4.86万
• 依托单位: HOKKAIDO UNIVERSITY (1997)Kumamoto University (1996)
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1996
• 资助国家: 日本
• 起止时间: 1996 至 1997
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08455487/
• 关键词: Crack; Visualization; X-ray CT Scan; Image Processing; Rock; Rock Splitting; Fracture mechanics; Dynamic fracture; 亀裂; 蛍光剤; 紫外線; 圧縮試験

A series of experimental and theoretical investigation for the three dimensional visualization of rock fracturing process has been carried out. Results obtained are as follows.(1) The visualization of the fracture under various circumstances and loading conditions has been performed. It is clarified that the fracture process of granite under uniaxial compression is characterized by the crack propagation with complex modes. And it is confirmed that the failure process of rock splitting can be interpreted as the development of the process zone in front of the crack tip.(2) It is confirmed that X-ray CT method is effective to measure the aperture of open cracks and fluid migration in rocks.(3) The fragmentation process of rock was analyzed by FEM with taking into account the crack propagation and the heterogeneity of strength. It is made clear that the localization process is strongly affected by the strength heterogeneity.(4) The spatial distribution of attributes of rock joints has been analyzedy geomathematical methods. It was pointed out that the visualization of rock joint distribution is useful to evaluate the seepage flow in rock mass.

针对岩石破裂过程的三维可视化进行了一系列实验和理论研究。所得结果如下：(1)对各种情况和载荷条件下的断裂进行了可视化。阐明了花岗岩单轴压缩断裂过程具有复杂模式裂纹扩展的特征。并证实岩石劈裂破坏过程可以解释为裂纹尖端前过程区的发育。(2)证实X射线CT方法能够有效测量开放裂纹的孔径, (3)利用有限元分析了岩石的破碎过程，考虑了裂纹扩展和强度的不均匀性。明确了定位过程受强度非均质性的强烈影响。(4)用地数学方法分析了岩石节理属性的空间分布。指出岩石节理分布的可视化有助于评价岩体渗流情况。

项目成果

金子 勝比古: "岩盤内変位計測による堀削斜面の安定性評価" 資源と素材. 112・13. 915-920 (1996)

Katsuhiko Kaneko：“通过测量基岩内的位移来评估开挖斜坡的稳定性”资源和材料 112・13（1996）。

金子 勝比古: "スムースブラスティングにおける起爆秒時精度の影響" 火薬学会誌. 58・3. 91-99 (1997)

Katsuhiko Kaneko：“爆炸时间精度对平滑爆破的影响”日本炸药学会杂志 58・3（1997 年）。

小池 克明: "数理地質学的手法による亀裂属性の空間分布の解析" 資源と素材. 112・13. 907-916 (1996)

Katsuaki Koike：“使用数学地质方法分析裂缝属性的空间分布”资源和材料 112・13（1996）。

尾原祐三,菅原勝彦: "X線CTによる亀裂の可視化" 資源・素材学会春季大会講演要旨集. 1巻(印刷中). (1997)

Yuzo Ohara、Katsuhiko Sukawara：“使用 X 射线 CT 进行裂纹可视化”日本资源与材料学会春季会议摘要第 1 卷（出版中）。

北野亮,金子勝比呂: "圧裂引張強度の統計的性質について" 資源・素材学会春季大会講演要旨集. 1巻(印刷中). (1997)

Ryo Kitano、Katsuhiro Kaneko：“压碎拉伸强度的统计特性”日本资源材料学会春季会议论文集第 1 卷（出版中）。