长三角地区城际、市域(郊)铁路规划实施评估OA

[Objective]Intercity and urban(suburban)railways are important carriers of new urbanization,and objective evaluation of planning implementation is of great significance for advancing planning formulation and adjustment,as well as high-quality project construction and operation.[Methods]Taking the Yangtze River Delta region as an example,the evaluation was conducted from two dimensions:planning implementation and project implementation.The implementation of intercity railway construction plans,urban railway construction plans,and multilevel rail transit plans approved by the National Development and Reform Commission was comprehensively reviewed.In combination with the design documents,the functional positioning,line and station schemes,technical standards,laying methods,project investment,construction and operation management,and passenger flow benefits of these railway projects were analyzed.[Results]The results showed that in terms of planning implementation,the overall progress was relatively smooth,but problems existed,including the large number of planning types and delays in the implementation of some plans.Planning formulation should be standardized,and mid-term evaluation and supervision should be strengthened to summarize problems promptly and optimize and adjust the plans.In terms of project implementation,the functional positioning of the railway lines was generally reasonable,but there were also cases of"constructing high-speed railways and subways based on intercity railways"in the early stage.Railway lengths and average station spacings were generally reasonable,although some lines were relatively long and the average station spacing was less than 3 km.Technical standards were relatively standardized,but diverse technical systems affected the interconnection and resource sharing among lines.The average proportion of underground lines was 34.4％,and the average technical and economic indicator was 460 million yuan/km.Overall investment was generally controllable,although some lines had relatively high technical and economic indicators.A construction and operation mode centered on central cities in metropolitan areas was explored and developed,but coordination across provinces and metropolitan areas still needed to be strengthened,and passenger flow benefits were generally poor.[Conclusion]This study proposes relevant recommendations for project construction based on a problem-oriented approach.