"强网补链"形势下包西线张桥—何寨段扩能改造方案及标准研究OA

The Baotou-Xi'an Railway is one of the national strategic channels for transporting coal from the north to the south.The Zhangqiao-Hezhai section is a crucial segment for the railway's introduction into the Xi'an Hub.Currently,the capacity utilization rate of the Zhangqiao-Hezhai section reaches 98.7%,indicating that the carrying capacity is saturated,and capacity expansion and renovation are urgently needed.First,the overview of the existing line and the problems existing in passenger and freight transportation of the railway network were expounded.Secondly,combined with the passenger and freight demand in the research year,the adaptability between the predicted traffic volume and the capacity of the existing line was analyzed,and the construction of additional third and fourth lines was recommended.The schemes of adding mixed passenger and freight lines and dedicated freight lines were analyzed from the aspects of engineering setting and transportation organization.Finally,it was recommended that the third and fourth lines be built according to the standards of dedicated freight lines.On this basis,further combined with the topographic conditions,the limiting gradient of the additional third and fourth lines was studied from the perspectives of network matching and transportation organization adaptability.The study provides a reference for the capacity expansion and renovation scheme of the existing line.