大型隧道锚施工优化及其稳定性分析  

Construction optimizing and stability analyzing for large tunnel anchor

作　　者：赵海斌[1,2] 梅松华[2] 彭运动[3] 刘波[3] 

机构地区：[1]河海大学土木学院,江苏南京210098 [2]中国水电顾问集团中南勘测设计研究院,湖南长沙410014 [3]中交公路规划设计院,北京100055

出　　处：《辽宁工程技术大学学报（自然科学版）》2009年第6期873-876,共4页Journal of Liaoning Technical University (Natural Science)

基　　金：西部交通建设科技项目-坝陵河特大桥关键技术基金资助项目(200531800019)

摘　　要：针对隧道锚的施工及支护优化问题,根据坝陵河大桥西锚碇隧道锚工程地质条件、工程设计资料、施工方案以及现场试验监测资料等基础资料,进行了位移反分析;通过对隧道锚施工开挖的仿真分析,综合研究了开挖进尺、施工顺序、锚杆预应力水平等因素对隧道锚围岩开挖变形特征和塑性区分布的影响,从而提出了合理的施工开挖方案以及支护措施,并应用于实际工程施工过程中,结合监测成果评价了隧道锚围岩变形稳定性。此项研究可为同类工程提供参考。Based on the conditions of engineering geology,the engineering design data,the engineering construction plan and monitoring data of tunnel anchorages in a tunnel at the west of Baling-river suspension bridge,a back analysis of deformation was carried out and some deformation parameters were obtained.With the simulation on the construction of tunnel anchorages,the characteristic of deformation and plastic zones of the tunnel rock-mass under different excavation conditions,different magnitudes of steel-bar pretension were studied.Therefore,the rational excavation and support plans were proposed and applied to the construction of tunnel anchorages.

关 键 词：隧道式锚碇 施工优化 位移反分析 支持向量机 

分 类 号：U455.4[建筑科学—桥梁与隧道工程]