中文摘要：

节理岩体具有特殊的不连续结构,从而展现出复杂的各向异性力学特性。为了掌握这一复杂力学特性,从理论上分析了单一节理面的力学效应,并通过常规三轴压缩试验研究了单一预制贯通节理试件的各向异性力学特性。结果表明,节理试件的力学特性分为受节理面控制和岩块控制;与完整试件相比,节理试件的力学参数均有不同程度降低,其中弹性模量、抗压强度、黏聚力随节理倾角呈U型分布,最小值均出现在60°倾角节理试件,而内摩擦角与节理倾角呈线性增大关系;随着围压等级升高,不同倾角节理试件弹性模量和抗压强度的最大值与最小值的比值降低,力学性能差异减小。

英文摘要：

The jointed rock mass is a discontinuous body with special structure, and shows the anisotropic mechanical characteristic. In order to understand its complex mechanical characteristic, the mechanical effects of single joint surface is analyzed theoretically;and the triaxial compression test is conducted on samples with single prefabricated joint. The test results show that the mechanical characteristic of jointed samples is governed by either joint surface or rock. Compared with the intact samples, the mechanical parameters of jointed samples reduce inordinately. The Young’s modulus, compressive strength, cohesion are in U-shaped alongwith joint inclination and the minimum value occured at theinclination of60°jointed samples. On the contrary, the internal friction angle increases linearly with the jointinclination. With the increasing of confining pressure, the ratio of maximum to minimum of Young’s modulus and compressive strength decrease; it shows that differences of mechanical characteristic of variousinclination jointed samples lessen.