大跨度变截面隧道施工监测设计与信息反馈  

Construction Monitoring Design and Information Feedback of Long Span Tunnel with Variable Cross Section

作　　者：龙秀堂 罗宁宁 申玉生[2] LONG Xiutang;LUO Ningning;SHEN Yusheng(China Railway No.5 Chengdu Engineering Group Co.,Ltd.,Chengdu Sichuan 610000;Southwest Jiaotong University,Cheng du Sichuan 610031)

机构地区：[1]中铁五局集团成都工程有限责任公司,四川成都610000 [2]西南交通大学,四川成都610031

出　　处：《河南科技》2020年第4期93-96,共4页Henan Science and Technology

摘　　要：以成兰铁路杨家坪隧道施工为例,提出了现场监控量测的实施方案,并对该方案的监测仪器、测点布置、施工监测及量测频率进行了介绍,并选取典型断面和典型测点的监测数据进行整理分析,具体分析杨家坪隧道的拱顶下沉、周边收敛位移、围岩接触应力、钢拱内力和锚杆轴力。结果表明,隧道开挖围岩稳定性良好,并未发生失稳破坏,为后期隧道建设提供优化方案,为今后大断面隧道的施工积累了经验。Taking Yangjiaping tunnel construction of Chengdu-Lanzhou Railway as an example,the implementation scheme of on-site monitoring and measurement was put forward,and the monitoring instruments,measuring point ar rangement,construction monitoring,measuring frequency and data collection and arrangement of the scheme were in troduced,and the monitoring data of typical cross section and typical measuring point were selected for sorting and analysis,and the vault subsidence,peripheral convergence displacement of Yangjiaping tunnel were specifically ana lyzed.The results show that the stability of the surrounding rock is good,and there is no instability damage.It pro vides the optimization scheme for the later tunnel construction and accumulates the experience for the construction of large section tunnel in the future.

关 键 词：隧道 监控量测 数据分析 

分 类 号：U456.3[建筑科学—桥梁与隧道工程]