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首页> 外文期刊>Shock and vibration >Influence of Bedding Planes on the Mechanical Characteristics and Fracture Pattern of Transversely Isotropic Rocks in Direct Shear Tests
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Influence of Bedding Planes on the Mechanical Characteristics and Fracture Pattern of Transversely Isotropic Rocks in Direct Shear Tests

机译：直接剪切试验中层理面对横观各向同性岩石力学特性和断裂模式的影响

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摘要

Bedding planes are the primary control on the anisotropy of mechanical characteristics and fracture patterns in rock. To analyze the influence of the geometrical properties of bedding planes on the direct shear strength characteristics and fracture patterns of transversely isotropic rocks, numerical models were established using an improved modeling method using Particle Flow Code. The results of the numerical model were in good agreement with those of the physical experiments of an artificial rock mass containing a single bedding plane. The results show that the shear fractures with a range of bedding plane geometries can be divided into two patterns. When the inclination angles of the bedding planes were larger or smaller, a thoroughgoing fracture plane was formed near the preexisting shear fracture plane. On the other hand, the intact rock was broken into many parallel sheets.
机译：层理平面是控制岩石力学特性和裂缝模式各向异性的主要方法。为了分析层理平面的几何特性对横观各向同性岩石的直接抗剪强度特征和断裂模式的影响，使用改进的建模方法，使用粒子流代码建立了数值模型。数值模型的结果与包含单个层理面的人造岩体的物理实验结果非常吻合。结果表明，具有一定层理平面几何形状的剪切裂缝可以分为两种类型。当垫层平面的倾斜角较大或较小时，在先前存在的剪切断裂面附近会形成一个彻底的断裂面。另一方面，完整的岩石被分成许多平行的薄片。

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