摘要
利用预布大规模随机裂隙生成网格技术,采用非线性弹塑性有限元法,重点计算比较了加固前后溪洛渡右岸地下厂房洞室群洞周围岩变形特征、应力分布状态及扰动区分布范围,给出了洞周不稳定块体的部位及其破坏形式,讨论了主厂房顶部的错动带出露位置对顶拱稳定性的影响,为今后支护优化设计提供参考。
In this paper the powerhouse chamber complex of Xiluodu Hydropower Station is investigated in detail using random joint distribution model and non- linear elestic- plastic finite element method. The deformation, stress field and disturbed zones of the surrounding rock mass are studied and differences between the chamber complex with and without support are analysed emphatically. Moreover regions and failure forms of potential unstable rock blocks are found out. Influence of exposed shear zone position on the main powerhouse crown is discussed. The study results offer a useful reference to optimization design of the support in the future.
出处
《水电站设计》
2007年第1期10-14,共5页
Design of Hydroelectric Power Station
关键词
地下洞室
有限元法
支护
错动带
破坏形式
稳定性分析
溪洛渡水电站
underground chamber
support
shear zone
failure analysis
stability analysis
finite element method
Xiinodu Hydropower Station
