摘要
以某市引水工程地下洞室围岩为例 ,采取试验样品若干件 ,分别做了围岩的平均化学成分与百分含量衍射以及电镜扫描分析 ,并得到了相应的结果。在此基础上 ,从成分和微观结构两方面入手 ,总结出低地应力区碎裂结构围岩组成与显微结构方面的特征和变化规律 ,初步探讨了低地应力区碎裂结构围岩微观变形特征 ,这为进一步研究低地应力区围岩宏观变形破坏及其稳定性等方面 。
This paper presents analytical results of composition and microstructure of the discrete structural surrounding rock mass in a low geostress region. Rock samples, taken from the surrounding rock mass at different locations of the underground excavation for a water conveyance project, are analyzed for chemical composition, average percentage of content, and microstructures by using electron diffraction and electron-scan microscope. The micro-deformation of the rock is then characterized, thus providing guidelines for further study for macro deformation, failure and stability of rock masses in the low geostress region.
出处
《工程地质学报》
CSCD
2004年第4期396-400,共5页
Journal of Engineering Geology
基金
中国博士后科学基金资助项目
关键词
围岩
碎裂结构
地应力
变形破坏
变形特征
地下洞室
岩基
基础
试验样品
均化
Low geostress region,Underground excavation,Discrete structural surrounding rock mass,Composition and microstructure
