针对北京地铁9号线区间盾构隧道穿越南四环路施工案例,制定了相应的施工安全管理程序,提出了地层加固及变形控制等安全风险规避措施,最终保证了隧道施工安全顺利通过。
According to a construction case of a interval shield tunnel which is passing through South fourth ring road in Beijing subway line No.9,corresponding management program is made for controlling security risks,such measures as reinforceing stratum and restricting its deformation are also brought forward.With these measures,the shiled tunnel undercrossed the South fourth ring road safely and successfully.