通过对世界各国实际震害资料的搜集整理，综合分析得出地下洞室地震破坏形式有山体边坡破坏造成的结构破坏、洞口塌方、洞室横断面错动破坏、沿相交断层产生较大位移、围岩剥落、支护或衬砌扰动或变形等。运用数值模拟技术，分析地下洞室震害程度影响因素。计算结果表明地震烈度越高，洞室越易遭受破坏；圆形洞室动力稳定性较好；建在均匀、坚硬的岩石中的地下洞室不易遭受地震破坏；地下洞室所处区域地应力越大，其位移动力响应值较小；地下洞室衬砌刚度增大在一定程度上将会加大震害程度；洞室出口段容易遭受地震破坏。

Based on earthquake damage data collection around the world, the earthquake damage types of underground cavern were comprehensively analyzed, such as the structural failure caused by slope failure, the portal collapse, the fault movement of cavern crosscut, the large displacement between two intersected faults, the spalling of surrounding rock, the disturbance or deformation of the support and lining system and so on. Numerical simulation technology was applied to analyze the influencing factors of underground caverns destructiveness. The calculation results showed that: the cavern was easier to be destroyed under higher earthquake intensity; dynamic stability of circular tunnel was better; the cavern constructed on homogeneous and hard rock was nontrivial to been damaged by earthquake; the dynamic displacement response index would be smaller with a large ground stress in the underground cavern region; the increase of lining stiffness would partly rise the degree of the seismic damage ; the outlet of cavern suffered the earthquake destruction easily.