矩形顶管上穿运营隧道的施工参数控制分析

Analysis on construction parameter control of rectangular pipe jacking over-passing the operating tunnel

在宁波地铁3号线四明中路站建设中,大断面矩形顶管需上穿运营隧道。根据下方运营隧道的监测数据,对主要施工参数的调整效果进行了分析。结果表明:合理调整施工参数的效果良好,使隧道上浮量控制在10 mm以内。

In the construction of Siming Middle Road Station of Ningbo Metro Line 3,the operating tunnel need to be over-passed by the large-section rectangular pipe jacking. According to the monitoring data of the operating tunnel below,the adjustment effect of main construction parameters are analyzed. The results show that good effects are achieved after reasonable adjustments of construction parameters,that making the floating amount of the tunnel in operation within 10 mm.