Evaluation of Strength of Rock Mass from Property of Intact Rock and Digital Image of Crack Distribution on Outcrops

从完整岩石性质和露头裂纹分布数字图像评价岩体强度

• 批准号: 12650455
• 负责人: KYOYA Takashi
• 金额: $ 1.79万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2001
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-12650455/
• 关键词: Discontinuous Rock mass; Multi-scale analysis; Digital image of Crack distribution; 開閉亀裂モデル; 均質化法; 岩盤の変形強度特性; 極限荷重解析

Mechanical properties of rock mass are strongly governed by the microscopic structure that consists of distributed cracks and various rock materials. In order to evaluate the deformability and the strength of such a rock mass, the numerical scheme of multi-scale which is based on both the homogenization method and the limit load analysis is proposed. The data needed are only the mechanical properties of intact rocks and the digital image of crack distribution, which are easily obtained from laboratory tests and survey in site. The deformability and strength of representative element of rock mass are reasonably evaluated from the homogenization analyzes. And then the limit load of a rock mass structure is also successfully evaluated by the limit load analysis.

岩体的力学性质在很大程度上取决于由分布的裂隙和各种岩石材料组成的微观结构。为了评价此类岩体的变形能力和强度，提出了基于均匀化方法和极限荷载分析的多尺度数值计算方法。所需数据仅为完整岩石的力学性质和裂隙分布的数字图像，这些数据可从室内试验和现场测量中方便地获得。通过均匀化分析，合理地评价了岩体典型单元的变形能力和强度。通过极限荷载分析，成功地确定了岩体结构的极限荷载。

项目成果

T. Kyoya, L. Ouyang: "An application of stability analysis method based on the homogenization theory to a rock slope"Proceedings of JSCE. in print.

T. Kyoya，L. Ouyang：“基于均质化理论的稳定性分析方法在岩质边坡中的应用”日本土木工程学会论文集。

T. Kyoya, K. Terada: "A multi-scale structural analysis and its application to a strength evaluation for fissured media."Proceedings of JSCE. No.680/III-55. 49-64 (2001)

T. Kyoya、K. Terada：“多尺度结构分析及其在裂隙介质强度评估中的应用”。JSCE 会议录。

京谷孝史, 欧陽立珠: "均質化理論に基づく安定性評価解析法の岩盤斜面への適用"土木学会論文集. (印刷中).

Takashi Kyoya，Lizhu Ouyang：“基于均匀化理论的稳定性评价分析方法在岩石边坡中的应用”日本土木工程学会论文集（正在出版）。

京谷孝史, 寺田賢二郎: "マルチスケール応力変形解析法とその分布亀裂を含む材料の強度特性評価への適用"土木学会論文集. No.680/III-55. 49-64 (2001)

Takashi Kyotani、Kenjiro Terada：“多尺度应力变形分析方法及其在含分布裂纹材料强度性能评价中的应用”日本土木工程学会论文集第 680/III-55 号（2001 年）。 ）