含水砂层隧道围岩失稳破坏机制及控制研究现状综述

Review of research on instability failure mechanism and stability control of tunnel surrounding rock in water-bearing sandy ground

饱和动态含水砂层的工程力学特性及隧道围岩的失稳破坏机制及稳定性控制是含水砂层隧道设计与施工中的重要课题。在回顾砂土应变局部化问题研究现状基础上,重点介绍了含水砂层隧道工程中隧道围岩稳定性问题的研究现状及存在的问题。提出了含水砂层隧道围岩渐进性失稳破坏过程中有待研究的问题,这将有助于含水砂层隧道设计与施工水平的提高。

The engineering mechanical properties of saturated,water-bearing sandy ground,instability failure mechanism and stability control of tunnel surrounding rock are key issues in water-bearing sandy ground tunnel design and construction.Based on the review of research on sand strain localization,the water–bearing sandy ground tunnel surrounding rock stability research is described emphatically.Some issues in progressive failure of water-bearing sandy ground tunnel surrounding rock are presented,which need to be further studied.These works will be helpful to improve the level of bearing–water sandy ground tunnel design and construction.