兰渝铁路

　　兰渝铁路是我国地质条件最复杂的山区长大干线铁路，施工难度极大、风险极高。中交二公局承建的兰渝铁路土建工程5标段位于甘肃陇南境内，线路长33.45公里，桥隧比例高达83%,其中两水隧道施工中遇到的高地应力软岩大变形被专家称为国内罕见，世界难题；武都梁场制架T梁3305榀，为全线最大的梁场；陇南车站成为陇南市的新地标。兰渝铁路项目荣获火车头奖杯。
　　Lanzhou-Chongqing Railway is the most complicated railway in mountainous area. It is very difficult to construct and the risk is very high. The section No.5 of civil engineering project of Lanzhou-Chongqing Railway undertaken by CCCC Second Highway Engineering Co., Ltd. is located in Longnan of Gansu Province. The length of the railway is 33.45 km and the ratio of bridge and tunnel is 83%. The large deformation of soft rock with high in-situ stress encountered in the construction of Liangshui Tunnel is regarded as a rare problem in China and the world by experts. There are 3305 trusses in Wudu girder fabrication yard, which is the largest beam yard in the whole line. Longnan station has become a new landmark in Longnan. Lanzhou-Chongqing Railway project won locomotive trophy cup.