| 雁形裂纹扩展的模型试验及断裂力学机制研究 |
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| 引用本文： | 朱维申,陈卫忠.雁形裂纹扩展的模型试验及断裂力学机制研究[J].固体力学学报,1998,19(4):355-360. |
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| 作者姓名： | 朱维申 陈卫忠 |
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| 作者单位： | 中国科学院武汉岩土力学研究所 |
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| 基金项目： | 国家自然科学基金委,中国长江三峡开发总公司联合资助 |
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| 摘 要： | 通过相似材料模拟试验的方法研究了双轴压缩载荷作用下闭合雁形裂纹的起裂、扩展和岩桥的贯穿机理，得到了双轴压缩载荷作用下，不同方位雁形裂纹的开裂角、起裂载荷、岩桥贯通载荷及临界失稳载荷等重要的断裂力学参数，提出岩桥的破坏模式有剪切破坏、拉剪复合破坏和翼裂纹扩展三种
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| 关 键 词： | 相似材料 岩桥 贯通 岩土工程 断裂力学 |
SIMULATION EXPERIMENT AND FRACTURE MECHANISM STUDY ON PROPAGATION OF ECHELON PATTERN CRACKS |
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| Zhu Weishen,Chen Weizhong,Shen Jin.SIMULATION EXPERIMENT AND FRACTURE MECHANISM STUDY ON PROPAGATION OF ECHELON PATTERN CRACKS[J].Acta Mechnica Solida Sinica,1998,19(4):355-360. |
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| Authors: | Zhu Weishen Chen Weizhong Shen Jin |
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| Abstract: | The initiation, propagation and coalescence mechanism of closed echelon pattern cracks are studied by simulation experiments with similar material. Important fracture parameters such as initial fracture angle, initial fracture load, coalescence load of rock bridge, critical failure load of samples with different azimuthal angles are obtained. Furthermore, the three failure modes of rock bridges, which are shear, tensile shear and wing crack failure are suggested. |
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| Keywords: | similar material biaxial compression rock bridge coalescence |
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