11月19日，西藏拉萨至日喀则铁路首座两千米级隧道——双曲村隧道顺利贯通。当日，由中铁二十一局集团拉日铁路指挥部一分部独立承建的拉萨至日喀则铁路双曲村隧道经过一年多的艰辛建设，如期顺利贯通。双曲村隧道全长2128米，是拉日铁路贯通的第一座两千米级隧道。据了解，拉日铁路全长253公里，其中桥隧总长115.7公里。新华社发（王孚 摄）     On November 19,,Tibet Lhasa to xigaze railway's first two kilometers level tunnel - hyperbolic village tunnel smooth through.On that day,The China railway group, twenty game pull railway command a division of independent construction Lhasa to xigaze railway hyperbolic village tunnel after more than a year of hard construction,Duly smoothly through.Hyperbolic village tunnel length of 2128 meters,Is pull day railway through the first seat two kilometers level tunnel.It is understood,La day railway (253 km),The total bridge 115.7 km.The xinhua news agency hair(WangFu perturbation)