高边坡岩体损伤与稳定性研究

Research on the Damage and Stability of High Slope Rock Mass

锦屏重大工程大坝高边坡是工程的重要组成部分,其安全与稳定性关系重大。文章采用现场考查、电镜观察对现场岩样进行了深入研究,并开展了现场边坡工程信息化监测。研究表明:大坝高边坡岩石组成及微观结构上存在多种微结构及微裂隙构造,与边坡岩体损伤与断裂存在内在关系;大坝高边坡层状岩体本构关系与岩体损伤、层面方位角、岩体参数、受力状态等有关。现场监测分析显示,边坡岩体受多种因素影响,总体上趋于收敛稳定,锦屏高边坡在目前工矿下是稳定的。

The high slope of Jingping dam was an important engineering part of the project.Its safety and stability were crucial.Rock samples were studied by means of examination on spot,observation in SEM.Monitoring of slope project information was performed,and three-dimension finite element calculation for the high slope was conducted.The study showed that there were several kinds of microstructure and microcrack in micromechanism of the high slope rock,which was related with rock mass damage and fracture of the high slope.The constitutive relation of the stratified rock on the high slope of the dam was associated with the damage of rock mass,azimuth angle of rock Interface,parameter of rock mass,stress state,etc.Monitoring and data analysis for construction site showed that the rock mass on the high slope run to convergence as a whole although it was influenced by many factors.The analysis indicated that the high slope rock mass was steady.