论文部分内容阅读
隧道的土压力是设计和计算隧道衬砌结构的基本荷载之一。它的大小与分布直接影响到衬砌结构的型式和构造,同时对施工方法,临时支撑的架设也有显著的影响。 由于坑道开挖引起的围岩破坏和变形产生隧道土压力,因此它与坑道围岩应力的重新分布有密切关系。坑道开挖后影响围岩应力状态的因素很多,如岩层的初始应力状态、坑道大小形状和位置、岩层的构
The earth pressure of the tunnel is one of the basic loads for designing and calculating the tunnel lining structure. Its size and distribution directly affect the type and structure of the lining structure. At the same time, it also has a significant impact on the construction method and the erection of the temporary support. Because of the tunnel earth pressure caused by the destruction and deformation of the surrounding rock caused by the excavation of the tunnel, it is closely related to the redistribution of stress in the surrounding rock of the tunnel. There are many factors that affect the stress state of the surrounding rock after the excavation of the tunnel, such as the initial stress state of the rock formation, the size and shape of the tunnel, and the structure of the rock formation.