摘要
贵昆铁路六沾复线三联隧道施工中,在玄武岩与煤系地层不整合接触带附近发生围岩大变形。结合地质勘察、施工揭示、施工支护衬砌及开裂变形特征,全面分析围岩地质环境、地层工程特性,结构受力特性及施工方法、技术措施的适应性,找出支护结构变形的原因,并在隧道开挖过程中进行进一步的试验,从而提出针对性工程处治措施,实施后效果良好。
In construction of Sanlian Tunnel on Liupanshui-Zhanyi Double Line of Guiyang-Kuiming Railway, large deformations of surrounding rock arose nearby the unconformable contact zone between basalt and coal measure strata. Combining with geological survey, construction revelation, construction support and lining, and cracking and deforming behavior, the followings, including the geological environment of the surrounding rock, the engineering character of strata, the mechanical characteristics of the structure, and the adaptability of the construction method and technical measures were comprehensively analyzed, so as to find out the cause of deformation of the supporting structure. In addition, tests were made further in excavation of the tunnel. As a result, targeted engineering treatment measures were proposed and got good effect after implementation.
出处
《路基工程》
2013年第6期182-186,共5页
Subgrade Engineering
关键词
隧道
大变形
原因
措施
tunnel
large deformations
cause
measures
