摘要
采用三维有限元方法对金川水电站地下厂房3种开挖方案进行数值模拟,对分期开挖过程中围岩破坏区、洞周位移、洞周应力的分布规律进行分析,结果表明:3种开挖方案在无支护情况下对围岩的影响基本相同,但开挖方案1略优于其他方案,建议在实际厂房开挖施工中采用方案1。
By application of 3D finite element method, the numerical simulations on three alternatives for the underground powerhouse excavation of Jinchuan Hydropower Project are performed. The distribution law of the failure zones of surrounding rock, displacement of the tunnel circumference and stress of the tunnel circumference during the excavation by stage is analyzed. The analyzing results show that impact by the three alternatives for the powerhouse excavation in condition of support absence is the same. But Alternative I is slightly better than the other two. Therefore, Alternative I is recommended to apply in the powerhouse excavation.
出处
《西北水电》
2014年第3期19-23,共5页
Northwest Hydropower
关键词
地下厂房
数值模拟
开挖方案
优化分析
金川水电站
underground powerhouse
numerical simulation
excavation alternative
optimization and analysis
Jinchuan Hydropower Project
