盾构微扰动技术在下穿机场主跑道中的应用  

Application of the Micro-Disturbance Technique for Shield Tunnelling under the Main Runway of an Airport

作　　者：陈昇[1] 马忠政[1] 

机构地区：[1]上海申通地铁集团有限公司,上海201103

出　　处：《现代隧道技术》2016年第3期164-169,共6页Modern Tunnelling Technology

摘　　要：盾构施工要满足对周边环境微扰动的要求,需综合考虑设计、施工、监测等技术。文章以盾构区间下穿机场主跑道工程为例,针对盾构施工引起的短期、长期沉降进行数值计算分析,通过采用试验段施工拟定的施工参数、新型大比重同步注浆浆液以及自动化无棱镜实时扫描监测技术,顺利完成了软土地区盾构微扰动穿越机场主跑道的掘进作业。监测结果显示,拟定的施工参数满足微扰动要求,且采用新型同步注浆浆液1 a后的跑道沉降稳定可控。Design,construction and monitoring should be taken into consideration during shield tunnelling in order to ensure micro disturbance to the surrounding environment. Under the main runway of an airport, shield tunnellingin soft clay was successfully completed with micro disturbance to the environment due to the help of the numericalanalysis of long- and short-term settlements induced by the shield construction and the proposed construction pa-rameters from a test section, a new synchronous grouting slurry with great specific gravity, and real-time automaticscan monitoring with no prism. The results show that the proposed parameters satisfy the requirements of micro dis-turbance and the runway settlement was under control one year later after adopting the new synchronous groutingslurry.

关 键 词：盾构微扰动技术 机场主跑道 新型同步注浆浆液 实时自动无棱镜扫描监测 

分 类 号：U455.43[建筑科学—桥梁与隧道工程]