特长隧道TBM导洞扩挖法可行性分析  

Feasibility Analysis of TBM Bored Pilot and Enlarging Tunnelling Method for Long and Large Railway Tunnel

作　　者：刘玉飞[1] 赵伟 王立川 王宝友[1] 齐梦学[3] LIU Yufei;ZHAO Wei;WANG Lichuan;WANG Baoyou;QI Mengxue(China Railway 18th Bureau Group Co.Ltd.,Tianjin 300222,China;School of Civil Engineering,Central South University,Changsha Hunan 410075,China;China Railway 18th Bureau Group Tunnel Engineering Co.Ltd.,Chongqing 400707,China)

机构地区：[1]中铁十八局集团有限公司,天津300222 [2]中南大学土木工程学院,湖南长沙410075 [3]中铁十八局集团隧道工程有限公司,重庆400707

出　　处：《铁道建筑技术》2022年第8期160-165,211,共7页Railway Construction Technology

基　　金：中铁十八局集团有限公司科技研究开发计划项目(G20-03)。

摘　　要：本文依据某铁路长大隧道工程编制,研究在取消部分设计辅助坑道情况下,采用TBM先行导洞贯通后再实施钻爆扩挖的方案可行性。阐述分析工程概况、总体方案选择思路及依据,探讨技术方案适应性和具体方案特点;对进度指标选取进行客观论证,并对比具体方案在工期上的可行性;确定最优方案后,根据实践情况总结方案实施过程需注意事项并提出几点需思考的问题,以期对类似工程施工起到参考及借鉴意义。Based on a long and large railway tunnel project, this paper studies the feasibility of adopting TBM to penetrate the pilot tunnel before drilling, blasting and excavation in the case of canceling part of the design auxiliary tunnel. This paper mainly introduces the general situation of the project, the train of thought and basis for the selection of the overall scheme, expounds the adaptability of the technical scheme and the characteristics of the concrete scheme, makes an objective analysis on the selection of the progress index, and compares the feasibility of the specific scheme in the construction period;after determining the optimal scheme, the matters needing attention and some considerations are summarized according to the practice situation, hoping to provide a reference for the construction of similar projects.

关 键 词：长大隧道 TBM导洞 扩挖 可行性 方案对比 

分 类 号：U455.4[建筑科学—桥梁与隧道工程]