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在采用爆破开挖隧道过程中,对围岩产生扰动是不可避免的,因此对隧道围岩稳定性分析是隧道稳定性计算和支护设计的一个重要的问题。由于岩土材料物理特性和力学特性非常复杂,要想用解析的手段预测隧道等地下结构物的力学动态,就必须建立精度较高的本构关系式。因而,一方面要求在事前设计阶段应尽量采用高技术和手段,加之经验对地质状态做出判断,另一方面要求在开挖施工阶段,不断通过现场量测对围岩和支护的动态及开挖方法做出评价并及时调整,使设计更加合理。
During the excavation of tunnel by blasting, it is unavoidable that the surrounding rock will be disturbed. Therefore, the analysis of surrounding rock stability is an important issue for the calculation and design of tunnel stability. Due to the complexity of the physical and mechanical properties of geomaterials, it is necessary to establish constitutive equations with high accuracy in order to predict the dynamic behavior of underground structures such as tunnels by analytical means. Therefore, on the one hand, it is required to use high technology and means as much as possible in advance of the design stage and to judge the geological status through experience. On the other hand, it is required to constantly measure the dynamic state of the surrounding rock and support and Excavation method to make evaluation and timely adjustment, make the design more reasonable.