论盾构施工穿越既有地铁运营线路的控制措施

On the Control Measures of Shield Construction Crossing Existing Subway Operation Lines

中-松盾构区间上跨既有崇岐运营线路区间施工难点是两线间距小、始发段长度较短,施工中通过将盾构机选型、掘进参数控制、刀盘前方渣土改良以及既有线和新建线路的监控量测等措施相结合,达到盾构施工通过既有线的目的,为其他类似工程施工提供借鉴意义。

The difficulties in the construction of the Zhongsong shield section across the existing Chongqi operation line section are small distance between the two lines and short length of the starting section. The shield construction can pass through the existing line by combining shield machine selection, tunneling parameter control, muck improvement in front of cutter head, monitoring and measurement of existing line and new line.