长沙湘雅路过江通道工程位于三一大道与营盘路之间,长沙湘雅路过江隧道北线贯通

导语:

长沙湘雅路过江通道工程位于三一大道与营盘路之间,长沙湘雅路过江隧道北线贯通。该项目负责人张亚洲介绍,北线盾构隧道贯通后,盾构机将进行拆解、转场及二次组装调试,计划今年6月进行南线盾构隧道掘进。

1月26日9时58分许,在长沙市开福区湘雅路与湘江中路交叉口盾构接井内,随着“星盛号”盾构机的巨大刀盘破洞而出,长沙湘雅路过江通道北线隧道顺利贯通。这是目前我省在建最大直径盾构隧道,也是穿越湘江的第一条单向3车道市政隧道,计划2023年底建成通车。

长沙湘雅路过江通道工程位于三一大道与营盘路之间,由长沙城发集团投资建设、中铁十四局集团施工,总投资53.278亿元,2019年8月开工建设,总工期4年。工程西起岳麓区岳华路,东至开福区芙蓉路,隧道全长4180米,其中1429米采用盾构法施工穿越湘江,隧道设计为双管双向6车道,行车时速50公里,管片外径14.5米,是长沙市首条双向6车道过江隧道。

2021年3月30日,隧道盾构机始发掘进,穿越古建筑、湘江大堤、江底断裂带、运营地铁等高风险区,攻克超大坡度小曲线始发、长距离高强度岩层掘进等施工难题,先后6次组织专业潜水员进仓换刀,更换刀具300余把。隧道施工创造了岩层掘进月均180米、最高月进尺270米的施工纪录,为同类型江底岩层盾构施工积累了宝贵经验。

该项目负责人张亚洲介绍,北线盾构隧道贯通后,盾构机将进行拆解、转场及二次组装调试,计划今年6月进行南线盾构隧道掘进。

(责任编辑:张奕)
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