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军都山隧道位于北京市延庆县境内,全长8460m,是大秦铁路最长的双线隧道,全国双线隧道中名列茅二。在隧道施工中采用了大型机械设备和先进施工技术,并针对施工中存在的问题开展了科研和全面质量管理工作,提高了工程质量,并取得了一定的经济效益。隧道于1988年8月25日建成,施工期3年零8个月,平均月双线成洞397m;月拱墙衬砌1015m。全隧道最高月施工水平是:正洞单工作开挖全断面233m;斜井提升开挖折合全断面168m;正洞单工作面成洞241m;单口拱月墙衬砌581m。
The military tunnel is located in Yanqing County, Beijing, with a total length of 8460m. It is the longest double-track tunnel on the Daqin Railway and the national second-line tunnel is named Maoji. In the tunnel construction using large-scale machinery and equipment and advanced construction technology, and for the problems in the construction of scientific research and total quality management work to improve the quality of the project, and achieved some economic benefits. The tunnel was completed on August 25, 1988 with a construction period of 3 years and 8 months, with average monthly double-hole 397m and monthly arch lining 1015m. The highest monthly tunnel construction level is: Zhengdong single-work excavation full-face 233m; inclined shaft lift excavation equivalent to full-face 168m; Zhengdong single-face into a hole 241m; single arch moon wall lining 581m.