盾构近距离小角度上跨运营隧道施工控制研究

Research on construction control of shield cross operation tunnel with short distance and small angle

结合郑州轨道7号线龙门路站—张家村站区间盾构上跨4号线丰庆路站—文化路站区间项目,通过上跨前评估及三维模拟,上跨中掘进参数及同步注浆,上跨后二次及督促注浆,能够有效控制隧道变形,保证运营隧道安全,并结合4号线隧道自动化监测研究运营隧道变形规律,为类似盾构上跨既有运营地铁施工提供参考。

Combining with the project of Longmen Road station-zhangjiacun station of Zhengzhou rail line 7 shield cross the section between Fengqing Road station-Wenhua Road station of line 4,through the pre span evaluation and three-dimensional simulation,the excavation parameters and synchronous grouting in the middle of the upper span,and the secondary and supervision grouting after the upper span,could effectively control the tunnel deformation and ensure the safety of the operating tunnel,and combining with the automatic monitoring of the tunnel of line 4,researched the deformation law of the operating tunnel and draw some meaningful conclusions.