摘要
某海底隧道地质条件异常复杂,覆岩被多处断层破碎带相割呈区域性林状分布,高外水压处断层及破碎带施工是隧道安全控制的关键所在.依据该海底隧道的初步设计方案,采用大型数值计算软件FLAC3D系统研究了水下岩石完整带和破碎带隧道开挖的稳定性及最优施工方案,分析了不同施工工法及支护参数对岩体变形、破坏特性的影响,并确定了海底隧道主、辅洞开挖相互影响效应,以便为海底隧道工程的施工决策提供量化资料和技术支持.
A sub-sea tunnel was eonstructed with the complex geological eondition of the eonnotative fault, and the crush zone and safety excavation for the zone of unfavorable geology with high external water pressure were key for the safety eontrol of the sub-sea tunnel. Based on the initial eonstruetion design of this subsea ttmnel, numerical simulations were eonducted in the case of different geology to obtain optimal eonstruetion sequences and stability analysis, the rock deformation and damage characteristics caused by different construction orders and support parameters were studied, and the mutual effect between the main tunnel and auxiliary tannel were analyzed to offer quantitative information and technological support for construction decision-making of the sub-sea tunnel.
出处
《山东大学学报（工学版）》
CAS
2008年第4期63-68,共6页
Journal of Shandong University（Engineering Science）
基金
国家基础研究发展计划("973"计划)专题资助项目(2007CB209407)
国家自然科学基金资助项目(50539080)
关键词
海底隧道
施工设计
数值仿真
施工优化
稳定分析
subsea tunnel
construction design
numerical simulation
construction optimization
stability analysis
