论文部分内容阅读
高压球型洞室由于其优越的三维力学特性,在迅速发展着的地下工程建设中日益获得重视,逐步得到应用.文献[1,2]对地下高压球型洞室应力进行了分析,但所获成果均属于弹性理论范畴,即假定岩体为均匀、连续、各向同性的理想弹性体.但是,大量的岩石力学试验表明岩体不是弹性体,在反复加载、卸载过程中残余变形十分明显.根据试验结果,岩体具有弹塑性强化趋势,图1是典型的应力-变形曲线.
Due to its superior three-dimensional mechanical properties, high-pressure spherical caverns have gained increasing attention in the rapidly developing underground engineering and have gradually been applied. The literature[1,2] has analyzed the stress of underground high-pressure spherical caverns, but The results obtained belong to the category of elasticity theory, ie, the assumed rock mass is a uniform, continuous, and isotropic ideal elastic body. However, a large number of rock mechanics tests show that the rock mass is not an elastic body and the residual deformation is very obvious during repeated loading and unloading. According to the test results, the rock mass has the tendency of elasto-plastic strengthening. Figure 1 is a typical stress-deformation curve.