西北某市引水工程右坝肩碎裂结构围岩成分与微结构特征

Study of composition and microstructure property of discrete structure surrounding rock mass at the rightabutment of a hydropower engineering in northwest China

以某市引水工程右岸溢洪洞为例,从微观成分和结构两方面探讨了工程右坝肩洞室围岩变形破坏的特征和规律性。在溢洪洞不同位置处出露的围岩体中,取试验样品若干件,测得围岩的平均化学成分并做了百分含量的衍射分析;对样品又做了电镜扫描分析,以进一步了解其微观变形结构特征。

This paper according to micro-composition and microstructure,analyses deformation and failure properties of the excavation's with discrete structure surrounding rock mass at the right bank of a hydropower engineering.Some testing samples were taken from the surrounding rock mass in different positions of the spill excavation,and then by experimenting analyses the average chemistry composition,content and microstructure.