轨道交通车站及区间杂散电流防护设计的探讨

A Discussion about Protective Design of Stray Current for Rail Transit Stations and Sections

介绍了杂散电流产生原理及其腐蚀的危害隐蔽性和突发性,阐述了维护和监测的困难性,明确了以防为主、以排为辅、防排结合、加强监测的防护原则,讨论了杂散电流防护中防堵、排流、监测等不同手段,结合工程经验及新型监测技术,力求有效缓解杂散电流腐蚀对轨道交通运营和国民经济所造成的损失。

This paper introduces the principle of generation of stray current as well as concealment and abruptness of its corrosion, expounds the difficulty of its maintenance and monitoring, determines the protection principle of taking prevention as primary measure and current drainage as secondary step in combination and strengthening monitoring. It discusses various means for stray current protection, such as anti-blocking, current drainage and monitoring. In combination with engineering experience and new monitoring technologies, every effort is made to achieve effective relief of losses of rail transit operation and national economy caused by stray current corrosion.