山区电气化铁路接触网防融冰关键技术研究

Research on the Anti-ice and Melting Programs of Electrical Railway Catenary in Mountainous Area

研究目的:山区电气化铁路分布于崇山峻岭之间,空气湿度高、地形地貌复杂,易出现接触网结冰现象,影响铁路干线的正常运行。目前关于接触网防融冰技术规程规范缺少系统、全面的论述和具体的规定,专用接触网防融冰装备技术成熟度不高、缺乏实际运营。基于此,本文结合国内外接触网防融冰技术现状,全面分析接触网结冰灾害的风险源,研究接触网防融冰设计思路及具体应对措施,因地制宜地提出接触网差异化防融冰关键技术方案,为山区电气化铁路接触网防融冰设计、运营维护等提供实际指导作用。研究结论:(1)明确了电气化铁路接触网覆冰重现期,细化了电气化铁路冰区等级划分;(2)分析并罗列出了接触网结冰灾害的风险源,逐一确定出接触网防融冰设计思路及具体应对措施;(3)系统地提出了接触网防融冰关键技术方案及建设方针;(4)本研究成果可为电气化铁路防灾减灾设计提供参考。

Research purposes: Ice coating on catenary occurs more easily in the mountain area of southwest China,which is caused by local high relative humidity and complex landform,and affects the normal operation of railway lines.At present,there is a lack of systematic,comprehensive discussion and specific provisions on the anti-ice technical specification of the electrical railway catenary,technical maturity of the special catenary anti-ice equipment is not high and it lacks practical operation. In this paper,the risk sources of catenary icing are analyzed based on the situation of catenary anti-ice technology,as well as the catenary anti-ice methods. And a series of comprehensive anti-ice solutions suited to local conditions are presented,to provide a reference for the operation and the catenary anti-ice design of electrical railway in southwest China.Research conclusions:( 1) The division of railway catenary ice area rank is altered according to the icing-thickness and the calculation method of icing recurrence period is defined.( 2) The risk sources of catenary icing are analyzed and presented,as well as the catenary design thoughts and anti-ice methods for icing.( 3) The key technical solutions for catenary anti-ice and melting are proposed systematically.( 4) The research results can provide reference for the design of disaster risk reduction of electric railway.