FLAC^(3D)在隧道初期支护与原岩条件的“耦合”问题的应用  

FLAC^(3D) program and its applications in couple problem between primary support design and rock wall condition in double-arch tunnel

作　　者：杨昌斌[1] 张胜云 徐江波[1] 刘贵应[1] 杨建成[1] 刘钊 

机构地区：[1]中国地质大学,湖北武汉430074 [2]中铁四局集团,安徽合肥230036

出　　处：《煤田地质与勘探》2004年第5期49-52,共4页Coal Geology & Exploration

基　　金：湖北省交通科研项目"高速公路复杂地层双联拱隧道施工控制工艺研究与应用"

摘　　要：为了更深入地了解施工过程联拱隧道围岩—支护结构体系的力学响应 ,并优化施工工序 ,以便在实际施工中根据具体情况和经济、技术水平调整施工步骤 ,对联拱隧道支护设计进行了三维模型分析。用FLAC3D对双联拱隧道网喷混凝土初期支护设计 ,进行了力学响应动态分析模拟 ,分析了岩体支护前后围岩的变形及应力状态 ,对隧道围岩的稳定性和初期支护结构的安全性做出综合评判 ,得出了一些非常有益的结论 ,用以指导襄十高速公路双联拱隧道的施工 ,取得了较好的经济效益。In order to acquire mechanics response between rock wall and support frame system in optimum-design to adjust working stage in time it was necessary to simulate 3D model of tunnel support design. The FLAC 3D model and different support parameters were used to simulate and analysis the stress and displacement in the wall rock mass during primary support of the double-arch tunnel in this paper, the stress and displacement law of the supporting structure was achieved as well. Some beneficial results were gained and offered the optimized working procedure to the double-arch tunnel to direct working, great economic benefit was attained as well.

关 键 词：FLAC^3D 初期支护 网喷混凝土 联拱隧道 耦合 

分 类 号：U456.1[建筑科学—桥梁与隧道工程] U456.2[交通运输工程—道路与铁道工程]