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．
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.
出处
《固体力学学报》
CAS
CSCD
北大核心
1998年第4期355-360,共6页
Chinese Journal of Solid Mechanics
基金
国家自然科学基金委
中国长江三峡开发总公司联合资助
关键词
相似材料
岩桥
贯通
岩土工程
断裂力学
similar material, biaxial compression, rock bridge, coalescence
