【摘 要】
：
隧道、洞室等地下工程的修建过程,是洞室壁面附近围岩不断发生应力卸载的过程.在这一过程中围岩力学性质与加载过程中表现出的力学性质存在 一定的差别.本文通过引入服从韦伯
【机 构】
：
同济大学地下建筑与工程系,东北大学岩石破裂与失稳研究中心
论文部分内容阅读
隧道、洞室等地下工程的修建过程,是洞室壁面附近围岩不断发生应力卸载的过程.在这一过程中围岩力学性质与加载过程中表现出的力学性质存在 一定的差别.本文通过引入服从韦伯分布函数的细观岩石微元体,运用连续介质损伤力学理 论,得出了可以反映岩石非均匀性的本构关系式:然后运用岩石破裂与失稳过程RFPA分析系 统,对隧道、洞室等地下工程由于洞室开挖引起的围岩卸载过程中,洞室孔壁附近围岩发生 的损伤演化和应力场调整全过程进行了有限元分析,得到了洞室壁面附近围岩损伤演化和应力场调整过程图.
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