【作者】 马士进；

【导师】 王永岩；

【作者基本信息】 辽宁工程技术大学 ， 工程力学， 2002， 硕士

【摘要】 软岩巷道的变形和位移，对于整个结构的稳定性具有重要的影响。能否准确地计算和模拟围岩的变形行为，对于我们选择巷道的支护时间和支护方案，具有极其重要的意义。 岩体破坏过程中的扩容软化性，对巷道的位移的影响性非常大，本论文研究了岩体在在加载和卸载状态下的扩容特性，在考虑岩体的扩容特性条件下，运用弹塑性理论、岩石力学等理论，推得关于均匀介质中圆形巷道围岩应变软化的几种力学模型。应用数值计算软件进行了实例计算，对所得结果进行了分析，得到一些指导生产的实际结论。最后应用RFPA岩石破坏过程分析系统，模拟了含节理软岩巷道的变形破坏特点。更多还原

【Abstract】 The deformation and displacement of the soft rock tunnel has an important influence on the stability of the whole structure, is vital for us to calculate and stimulate deliciously the deformation conduct of the rock tunnel to choose the time and program of the standing.The softening property of the dilatancy during the damage has a vital effect on the displacement of the tunnel. In this thesis, the characteristic of the dialtancy is discussed under the state of loading as well as unloading .Under the condition of the dilatancy, using the theory of the elastic-plastic and the rock mechanics, a few mechanical models are derived. The numerical stimulation is carried out by using the software and the results have been obtained. Finally , the damage properties of the deformation of the soft rock tunnel including splits is stimulated by using the RFPA analysis system of the process of the rock damage.更多还原