摘要
北京地铁17号线望京西站-勇士营站区间暗挖横通道下穿2条高压燃气管,施工中根据现场监测结果,分析在富水敏感地层中暗挖大断面隧道施工对燃气管线的影响,对沉降超标的管线采取隔离措施进行2次保护,确保了大断面隧道顺利穿越燃气管线。
Two high-pressure gas pipes passes underneath the underground excavated cross passage between Wangjingxi Station and Yongshiying Station of Beijing Metro Line 17.According to on-site monitoring results,impact of construction of undergound excavated large cross section tunnel in the water-rich sensitive stratum on the gas pipeline is analyzed,isolation measures for secondary protection of pipelines with excessive settlement are taken to ensure the large cross-section tunnel passes through the gas pipeline smoothly.
作者
尹伟
YIN Wei(Beijing Construction Engineering Group Co.,Ltd.,100055,Beijing,China)
出处
《建筑技术》
2021年第8期926-930,共5页
Architecture Technology
关键词
大断面下穿管线
地表沉降
管线变形
现场监测
large cross-section underpass pipeline
surface settlement
pipeline deformation
on-site monitoring
