| In recent years, China’s high-speed railway improved gradually , the relevant road network construction, transport capacity continues to expand, the railway cargo transport capacity has been greatly released. At the same time, in the railway network structure, technical equipment and capacity allocation of resources on the basis of optimization, in accordance with the optimization of transport organizations, reduce the transfer operations, speed up the delivery of goods, the he basic idea of organizing direct transportation. From the railway network, regional marshalling station to start, to further improve the main marshalling station division and the station between the convergence of traffic flow organization, rational allocation of station deconstruction ability is the only way to achieve the whole railway transport organization efficiency.Taking the Lanzhou North Station as the research object, this paper analyzes the function,application and transportation status of the Lanzhou North Marshalling Station Integrated Automation System (SAM system), and analyzes the station layout, arrival, disassembly,marshalling, starting operation, the exchange traffic flow. In order to improve the efficiency of station deconstruction, to strengthen the flow of convergence, reasonable arrangements for the operation plan, optimizes the traffic adjustment, disassembly grouping, tuning machine use,construction. At the same time,based on the idea of railway network,proposed to minimize the adaptation of the operation to open high-quality technology direct train-oriented, based on the Lanzhou North Marshalling station, Baoji East station, Xinfeng Town station, Zhengzhou North station, Wuhan North station, Zhuzhou North station and Jiangcun station traffic flow, assembly cost and transit time. Established a mathematical model of the Lanzhou North Station starting direct train program, and uses multi-stage, mix Genetic algorithm, solved the model. |