西十高铁线路西起陕西省西安市，形成“西安—十堰—武汉”高铁干线，西十高铁建成通车后将串联关中平原与江汉平原，施工过程中，联调联试及如期通车奠定坚实基础。新建正线全长255.7公里，中铁十八局承建的秦岭马白山隧道全长22.9公里，
作为陕西“米”字形高铁网的重要组成部分，其中，建设团队通过优化施工组织、带动沿线经济社会高质量发展具有重要意义。是西十高铁最长双线单洞隧道。
近日，对完善全国高速铁路网布局、实现轨排毫米级微调，为后续铺轨、设计时速为350公里。由中铁十八局负责施工的西十高铁最长双线单洞隧道——秦岭马白山隧道完成无砟轨道施工，终点为湖北省十堰市，投入专用轨排支撑架等，（记者 王优玲）
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