研究目的:城际铁路的国民经济和社会效益巨大，但建设投资大，其运营具有准公共性的特点，决定了其 运营经济效益不佳的客观情况。如何确保城际铁路可持续运营，成为城际铁路可持续发展的关键。 研究结论：( 1)确保城际铁路可持续发展是城际铁路设计的总目标；（2)要确保城际铁路可持续发展，应 从扩大项目收人来源、节约项目建设成本两条技术路线着手；（3)应按照“五网合一”的理念优化城际铁路线 网规划，落实好经济选线、交通衔接、站点周边综合开发等提高项目客流吸引能力；（4)应拓展物业开发、广告 等多渠道扩大项目收人来源；（5)应选择适宜的项目技术标准、优化工程技术方案、采用安全且具备可实施性 的工程措施、临时用地与永久用地统筹研究、采取适宜的投融资方案以及强化建设阶段投资控制等措施节约 项目的建设成本;（6)本研究成果对城际铁路线网规划、勘测设计和建设管理具有指导意义。

Abstract ： Research purposes ： The national economy and social benefits of intercity railway are hug， but the construction investment is large，and the operation has the characteristics of quasi-public，which determines its operations poor economic benefit. How to ensure sustainable operation of intercity railway is the key of intercity railway sustainable development. Research conclusions ：( 1 ) Ensuring intercity railway sustainable development is the total design target of intercity railway. (2) To ensure intercity railway sustainable development， we should take measures from expanding project income source and saving project construction cost. (3 ) We should optimize intercity railway line network planning according to concept of 11 five network merging in one"，implement economic route selection，improve traffic connection and operation， and conduct comprehensive development around the site，to improve passenger attraction capacity. (4) The muli - channel expanded project income sources should be expanded， such as property development and advertising. (5) Multiple measures should be taken to save project construction cost，such as selecting suitable project technology standard，optimizing engineering technology programmer， using security and feasible engineering measures， comprehensive study on temporary and permanent land together，taking suitable investment and financing programmer and strengthening investment control within the construction stage. (6) The research result has good guiding significance on intercity railway line network planning，survey design and construction management.