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郑万高速铁路重庆段栖霞隧道贯穿整个隧道。

12月11日早上,伴随着洞内最终一声锣声,郑万高铁栖霞隧道斜井大里程数与出入口小里程数方位成功贯通,意味着栖霞隧道总体所有贯通。

郑万高速铁路重庆段栖霞隧道贯穿整个隧道。  沈阳招标 上海阳一 菏泽中山医院 武汉挖掘机培训 北京二手房网签 延安男科医院 上海特略 上海lady 大连服装批发 潍坊君尚假日酒店 第1张

栖霞隧道坐落于云阳县栖霞镇地区,总长7623米,较大 基础埋深371米,设计方案横坡为5.1‰、-11.5‰的人字坡,为设计方案车速350千米的单洞多线隧道。 隧道内地质学繁杂,工程施工碰到的关键行程问题有软岩柔弱、瓦斯、下穿髙速段、滑坡体山体滑坡等,工程施工难度系数大,安全隐患高。

因此,中铁二院设计对于隧道各难题难题采用了目的性解决对策:为加速工程进度,融合排水管道、自然通风、防灾减灾援救等必须,设定"中间斜井"輔助矿坑计划方案;瓦斯段采用提升瓦斯检测和瓦斯自然通风、增设全封二衬构造等对策;洞跨下穿高速路路基工程段采用“加厚型支护构造,采用超前的大钢管桩支护,短进尺,强支护,早封闭式,二衬紧随”等对策,以确保工程施工和构造安全性。

据了解,栖霞隧道工程施工历经42月,此隧道的贯通,意味着郑万高铁基本建设又一个重特大连接点获得关键进度,为事后工程施工确立了牢靠的基本。

郑万高铁总长818千米,设计方案行程安排速率350公里/钟头,全程完工全线通车后,将变成在我国西部地区通向中华、华北地区、东北三省新的方便快捷迅速货物运输主通道,对加速沿岸旅游资源开发开发设计和城市化进程,推动区域协调发展趋势,促进在我国一带一路战略发展战略执行具备关键实际意义。到时候,重庆市至郑州市将由如今的八个钟头减少到4个钟头,到北京也只必须6个钟头上下。

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