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中新网广州9月12日电 (记者 王坚)粤港澳大湾区“一小时城轨交通圈”的重要组成部分——深大城际建设迎来重要进展,在“宝龙号”盾构机破洞而出后,深大城际2标土建八工区项目左线盾构区间于11日实现贯通,为双线洞通、后续铺轨及全线贯通奠定基础。
深大城际线路起于T4枢纽站,一期工程止于聚龙站,全长约68.8千米,设站11座,设计时速160千米,远期延长至大亚湾站。
据了解,深大城际建成通车后,将大幅填补深圳市东西两翼城际轴线的空白,串联起宝安、龙华、龙岗和坪山等多个外部组团,实现坪山至深圳机场的快速通达,对方便市民众出行、支撑城市空间拓展及改善交通条件、为大湾区经济发展注入强劲新动力具有重要意义。
据介绍,此次贯通项目由深铁集团建设管理、中铁南方投资、施工总承包、中铁上海工程局承建。大坪2号工作井-坪山站区间左线全长3574米,先后多次下穿建筑物群、地下管线、上跨既有营业线、综合管廊等重大风险源。地层复杂,地质突变多,掘进长度长,周围环境复杂,施工难度大,技术要求高。
为确保左线顺利贯通,该项目部科学组织施工,为盾构区间施工提供坚实技术保障,更以“首个磨桩下穿建筑物”的突破性实践,为深圳地铁轨道交通建设镌刻了全新标杆。(完)
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