摘要
大断面地下洞库的稳定性与开挖过程密切相关,本文对Ⅲ类围岩条件下的三种掘进施工方案进行了有限元数值分析,得出采用下导洞适度超前全断面台阶法要比中导洞掘进法、双侧壁导洞正台阶法安全经济,为同类地下工程施工提供了参考依据。
The stability of the large section underground cavity is closely bound up with the boring process. By the finite element numerical analysis of three boring methods in the case of grade Ⅲ, it is come to the conclusion that the method that the lower pilot tunnel in the advance within measure and all the section step by step is securer and cheaper than the mid pilot tunnel method and the both sidewalls pilot tunnel step by step method. It provides the reference basis for other construction.
出处
《低温建筑技术》
2006年第6期95-96,共2页
Low Temperature Architecture Technology
关键词
大断面洞库
掘进方案
稳定性分析
数值模拟
large section cavity
boring method
stability analyses
numerical simulation
