中文摘要：

砍乐队(SB ) ，轴、侧面、容量的紧张以及各向异性的连接岩石标本(JRS ) 的泊松比率被 Continua (FLAC ) 的快 Lagrangian 分析建模。岩石的失败标准是有紧张的一个 composited Mohr 库仑标准截止。一个使倾向的关节在山峰力量以外被当作理想的塑料材料的方形的元素。几鱼功能被写自动地在关节发现元素的地址并且计算飞机紧张 JRS 的全部 deformational 特征。结果证明为中等联合倾斜(JI ) ，紧张仅仅被集中进管理 JRS 的行为的关节，导致在轴、侧面的方向的理想的塑料回答。为更高的 JI，当 JI 由于新 SB 长度的增加增加，山峰以后的压力轴、侧面的种类曲线变得更陡峭。到不稳定的失败的侧面的扩大和先锋是最明显的，导致最高的泊松比率和甚至否定的容量的紧张。为更低的 JI，全部山峰以后的 deformational 特征独立于 JI。最低侧面的扩大发生，始终导致最低泊松比率和积极容量的紧张。在飞机种类压缩品质上的各向异性的力量上的现在的预言在岩石的 triaxial 测试同意结果。纯毛织品公式计算的 JI 与最小的力量有关过高估计那。在纯毛织品模型上的现在的数字模型的优点被指出。

英文摘要：

Shear band （SB）, axial, lateral and volumetric strains as well as Poisson＇s ratio of anisotropic jointed rock specimen （JRS） were modeled by Fast Lagrangian Analysis of Continua （FLAC）. Failure criterion of rock was a composited Mohr-Coulomb criterion with tension cut-off. An inclined joint was treated as square elements of ideal plastic material beyond the peak strength. Several FISH functions were written to automatically find the addresses of elements in the joint and to calculate the entire deformational characteristics of plane strain JRS. The results show that for moderate joint inclination （JI） , strain is only concentrated into the joint governing the behavior of JRS, leading to ideal plastic responses in axial and lateral directions. For higher JI, the post-peak stress-axial and lateral strain curves become steeper as JI increases owing to the increase of new SB＇s length. Lateral expansion and precursor to the unstable failure are the most apparent, resulting in the highest Poisson＇s ratio and even negative volumetric strain. For lower JI, the entire post-peak deformational characteristics are independent of JI. The lowest lateral expansion occurs, leading to the lowest Poisson＇s ratio and positive volumetric strain all along. The present prediction on anisotropic strength in plane strain compression qualitatively agrees with the results in triaxial tests of rocks. The JI calculated by Jaeger＇s formula overestimates that related to the minimum strength. Advantages of the present numerical model over the Jaeger＇s model are pointed out.