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年建成隧道20多公里的中铁十二局集团,2002年在全长18公里的西康高速公路秦岭终南山隧道施工中,创造单口月掘进429.5米的世界纪录,图为山西大运高速公路雁门关隧道。(摄影:高山)从回民支队、铁道兵二师、铁道部第十二工程局到中铁十二局集团有限公司,已经走过了半个多世纪的辉煌历程。企业总资产30亿元,年经营能力80亿元。从1998年至今,企业生产规模一直名列中国铁道建筑总公司系统之首。先后参加京九、秦沈、青藏等200多条铁路干支线和京沪、京珠等40多条高速、高
The 12th Bureau of China Railway Group, which completed more than 20 kilometers of tunnels, built a world record of 429.5 meters in a single pass in the construction of Qinnong Zhongnanshan Tunnel of Xikang Expressway of 18 kilometers in length in 2002. The picture shows the Yanmenguan Tunnel of Shanxi Dayun Expressway . (Photo: Mountain) From the Muslim detachment, the railway division two divisions, the twelfth Engineering Bureau of the Ministry of Railways to the China Railway 12th Bureau Group Co., Ltd., has gone through more than half a century of glorious history. The total assets of 3 billion yuan, annual operating capacity of 8 billion yuan. From 1998 to the present, the scale of production of enterprises has been ranked first in China Railway Construction Corporation system. Has participated in more than 200 Beijing-Kowloon, Qin Shen, Qinghai-Tibet Railway trunk and branch lines and the Beijing-Shanghai and Beijing-Zhuhai more than 40 high-speed, high