
正线全长477公里,设计时速350公里
10月1日清晨,四川省南充市南充北站施工现场随着第一组500米长钢轨稳稳落下,标志着成都至达州至万州高速铁路正式启动铺轨施工。线路正线全长477公里,设计时速350公里。
AI-generated summary
成达万高铁是中国“八纵八横”高铁网沿江通道的重要组成部分,正线全长477公里。
中新网南充10月1日电 (记者 刘忠俊)10月1日清晨,四川省南充市南充北站施工现场,随着第一组500米长钢轨稳稳落下,成都至达州至万州高速铁路(以下简称“成达万高铁”)铺轨施工正式启动。
成达万高铁二堡山隧道洞口外铺轨机拖着长轨缓缓前行。记者 刘忠俊 摄
成达万高铁是中国“八纵八横”高铁网沿江通道的重要组成部分。线路西起四川省成都市天府站,途经四川省资阳市、遂宁市、南充市、达州市和重庆市开州区、万州区,接入既有的郑渝高铁万州北站;正线全长477公里,设计时速350公里。
记者在铺轨作业现场看到,长钢轨在铺轨牵引车带动下,缓缓从长轨车上卸下,整个过程平缓有序。钢轨拖拉到位后,经过工人师傅微调精准落下,并将轨枕上的扣件螺母锁紧,钢轨完成铺设。
铺轨现场,工人师傅利用钢钎调整钢轨位置让其一次落地到位。记者 刘忠俊 摄
据了解,此次全线铺轨总里程约890公里,其中正线约853公里、站线约37公里,含178组道岔,其中无砟道岔133组、有砟道岔45组。“首铺选在南充北站是因为这里位于成达万高铁的中间点,可实现双向铺轨,同时靠近运营铁路线,方便钢轨运输。”中铁三局成达万高铁项目铺轨负责人张文称,为确保铺轨顺利进行,项目部投入2套铺轨设备、14台专业施工机车、7台轨道车,配置64台固定群吊组成智能吊装集群,500米长钢轨同步提升、精准横移及毫米级定位,装卸作业实现智能化。
不过,铺轨推进并不轻松。达州、遂宁境内有30‰的大坡道和长隧道群,空间受限、设备调转困难,洞内温湿度变化还容易让钢轨产生形变。为此,建设单位优化了WZ500型铺轨机的坡道参数,构建起质量、安全、应急三大保障体系,并专门制定长隧道施工方案;通过工艺优化、设备改良和方案预演,精细管控洞内编组、通风及温湿度,让特殊工况下的铺轨精准推进。
铺轨作业现场紧靠既有运营铁路线和南充北站,一列动车组正减速进站。记者 刘忠俊 摄
成达万高铁公司达州建设指挥部指挥长张宗伟介绍,全线桥梁桩基、承台、墩身建设已完成,隧道、站房及“四电”工程正按节点有序推进。
AI outlook — possibilities, not facts
全线铺轨及后续四电工程按节点推进
Very likely · Within months

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