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Nanchang Metro's Yongchang No. 2 Shield Machine Successfully Passes Beneath the Beijing-Kowloon Railway Bridge

2014-03-14 602 0人评论

近日，中铁十八局集团三公司担负施工的南昌地铁师大南路站至丁公路北站区间盾构上行线顺利通过京九铁路桥，下穿过程中轨面运行铁路限速45公里每小时。截止目前各项数据显示良好，铁路线路运行正常。这是南昌轨道交通1号线双向首次安全顺利通过正在运营的国家主干铁路线路。

　　为确保施工安全，盾构机在穿越京九铁路桥之前对该桥进行袖阀管注浆预加固处理，提升了桥梁的整体稳定性。同时，线上做好防护、轨面监测，线下严控掘进参数及地表、桥体监测。上、下密切配合，及时做到信息沟通确保铁路线路安全。

　　据介绍，该台盾构机于1 月6 日8 时开始下穿京九铁路桥，永昌2号盾构机一始发便要面临双联拱污水涵、高挡墙等风险源，难度较下行线更大。下穿过程中轨面运行铁路限速45公里每小时，并于1月8日成功穿越京九铁路桥，各项数据显示良好，铁路线路运行正常。目前，满足设计及铁路运行要求。盾构队施工人员将采取洞内二次补浆等措施继续加固桥体，并持续监控直至桥体趋于稳定。下一步，该台盾构将继续推进，下穿同样位于北京路上的二七公路桥。目前永昌1号掘进470环。据了解，该区间将于2014年2月底实现双向贯通。

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Nanchang Metro's Yongchang No. 2 Shield Machine Successfully Passes Beneath the Beijing-Kowloon Railway Bridge

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Nanchang Metro's Yongchang No. 2 Shield Machine Successfully Passes Beneath the Beijing-Kowloon Railway Bridge

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