暗挖大断面隧道下穿高压燃气管线沉降变形分析与管线保护措施  

ANALYSIS OF SETTLEMENT AND DEFORMATION OF UNDERGROUND EXCAVATED LARGE CROSS-SECTION TUNNEL PASSING HIGH PRESSURE GAS PIPELINE AND PIPELINE PROTECTION MEASURES

作　　者：尹伟[1] YIN Wei(Beijing Construction Engineering Group Co.,Ltd.,100055,Beijing,China)

机构地区：[1]北京建工集团有限责任公司,北京100055

出　　处：《建筑技术》2021年第8期926-930,共5页Architecture Technology

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.

关 键 词：大断面下穿管线 地表沉降 管线变形 现场监测 

分 类 号：TU74[建筑科学—建筑技术科学]