锦屏一级水电站地下厂房下游拱围岩变形开裂破坏成因分析与加固措施研究  

Study on deformation and damage causes and reinforcement measures of rock mass surrounding the downstream arch of underground powerhouse for Jinping-I hydropower

作　　者：侯东奇[1] 廖成刚[1] 冯梅[1] 幸享林[1] 臧海燕[1] 

机构地区：[1]中国水电顾问集团成都勘测设计研究院,成都610072

出　　处：《水力发电学报》2012年第5期229-235,共7页Journal of Hydroelectric Engineering

摘　　要：地下厂房洞室群围岩稳定问题是锦屏一级水电站工程关键技术难题之一。本文介绍地下厂房下游拱部围岩变形开裂破坏现象的发生和发展过程,以及厂区的工程地质条件,从地质特性和数值计算等角度对其成因进行分析,提出针对性工程加固措施,借助安全监测成果,评价加固措施的支护效果。目前洞室群的开挖支护施工已接近尾声,实践表明,对于上述现象的分析是合理的,加固措施有力地确保了洞室群的围岩稳定和工程安全。Rock-mass stability of underground powerhouse caverns is a key technical problem. This paper discusses the development of deformation and damages of the rock-mass surrounding the downstream arch of the underground powerhouse and its complicated poor geological condition. An analysis on this phenomenon is presented in terms of its geological properties and numerical calculations. Reinforcement measures are suggested and their effects are evaluated by using safety monitoring data.

关 键 词：岩石力学 变形破坏 有限单元法 地下厂房围岩 工程加固 

分 类 号：TV223.3[水利工程—水工结构工程]