紧邻建筑物浅埋暗挖车站的施工技术

摘要

结合沈阳地铁中街站实际工程，对浅埋暗挖施工中横通道及导洞开挖、大跨度初支扣拱关键技术进行了研究，提出了系列建筑物和管线安全保护措施。对施工过程中地表沉降、拱顶下沉、管线沉降及建筑物沉降等指标进行了监控量测。对监测结果的分析表明，采用系列沉降控制措施后，该浅埋暗挖车站施工过程中各沉降值均控制在了预警值范围内，周边建筑物及管线均处于安全状态。%Combined with the practical engineering of Shenyang subway station, the cross-channel and pilot tunnel excavation and large-span initial support are studied. Buildings and pipelines safety protection measures are proposed and the construction effect is analyzed. The ground settlement, crown settlement, settlement of buildings and pipelines and other indicators are monitored and measured. The monitor results indicate that each settlement values are controlled within the range of early warning by using settlement control measures of shallow mining method during the construction process, which ensured the surrounding buildings and pipeline safety.