论文部分内容阅读
本文对全球范围内地下洞室在地震作用下的性态的定性资料进行了综述。作者共收集了192篇报告,这些报告反映了在世界范围内85次地震中地下洞室的性态。这些资料已被汇入数据库,用以确定那些可能影响地下洞室稳定性的重要因素。所研究的参数包括:(1)破坏程度;(2)覆盖层;(3)主要岩石类别;(4)支护形式(即内衬砌或洞室支护的类型);(5)地理位置;(6)震级和震中距离。本研究的主要贡献是在峰值地面加速度、覆盖层深度和破坏程度之间建立了相关关系。这种相关关系可使我们在进行广泛的动力分析以前,就可以初步评估新的地下结构的稳定性。此外,采用本文介绍的定性资料,还可以迅速地评估现有地下设施可能受到的地震破坏的情况。
In this paper, the qualitative data of underground caverns under seismic action in the world are reviewed. The authors collected a total of 192 reports, which reflect the state of underground caverns in the 85 earthquakes around the world. These data have been imported into the database to identify those important factors that may affect the stability of underground caverns. The studied parameters include: (1) the extent of damage; (2) the overburden; (3) the main rock type; (4) the type of support (ie, the type of lining or cavern support); (5) (6) magnitude and epicenter distance. The main contribution of this study is the correlation between peak ground acceleration, depth of cover and extent of damage. This correlation allows us to make preliminary assessments of the stability of the new subsurface structure before we conduct extensive dynamical analyzes. In addition, qualitative data presented in this article can also be used to quickly assess the potential earthquake damage to existing underground facilities.