一、沈阳铁路枢纽现状及研究范围沈阳铁路枢纽总体改造规划自一九五三年开始,铁道部第三设计院于一九五三年提出《沈阳铁路枢纽(总图)研究报告》。按规划的要求,第一期工程扩建苏家屯机械化驼峰编组站,上行系统三级三场已于一九六○年三月竣工,下行系统二级三场已于一九七三年改建后交付运营。第二期工程新建沈阳西双向二级四场半自动化驼峰编组站,分别于一九八四年 I. Status and Scope of the Shenyang Railway Hub Shenyang Reconstruction Plan of the Railway Hub Since 1953, the Third Design Institute of the Ministry of Railways proposed the “Study Report of the Shenyang Railway Hub (General)” in 1953. According to the planning requirements, the first phase of the project was extended to Sujiatun mechanized hump marshalling yard. Up to three levels of the uplink system were completed in March 1960, and the second phase of the second downlink system was completed in 1973 Delivery operation. The second phase of the project to build two new Shenyang West two semi-automatic hump marshalling marshalling yard, respectively, in 1984