11月26日，中铁十二局的施工人员在庆贺达坂城隧道贯通。当日12时许，兰新铁路第二双线新疆段的重难点工程——达坂城隧道全线贯通，这意味着新疆境内总长19公里的14座隧道已全部贯通。达坂城隧道位于乌鲁木齐市达坂城区老风口境内，全长4642米，是兰新铁路第二双线新疆境内最长的隧道。兰新铁路第二双线是目前世界上一次性建设里程最长的高速铁路，是国家实施西部大开发战略的重点工程，线路正线全长1776公里，计划2014年底建成通车。新华社记者 赵戈 摄 November 26,China railway construction personnel 12 innings in celebration DaBanCheng tunnel breakthrough.On that day at about 12,LanXin railway second double xinjiang section of the difficulty DaBanCheng tunnel engineering - all through,This means that within the territory of xinjiang total 19 km of 14 tunnel has all through.DaBanCheng daban tunnel is located in urumqi city old tuyere territory,Total length of 4642 meters,LanXin railway is the second double xinjiang territory the longest tunnel.LanXin railway second double is currently the world's longest mileage one-off construction of high speed railway,Is the national implementation of the western development strategy of key project,Line refers to the total length of 1776 km,Plan completed by the end of 2014 opened to traffic.Xinhua news agency reporters ZhaoGe perturbation

这是贯通的达坂城隧道（11月26日摄）。 This is both of the DaBanCheng tunnel(November 26 perturbation).新华社记者 赵戈 摄 Xinhua news agency reporters ZhaoGe perturbation