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地铁走行轨杂散电流的存在,会对埋在地下的金属产生电化学腐蚀作用。在实时监测系统中,通过改变电路的结构与电源正极在电路中的接入点,模拟普通走行轨、交叉点、分叉点和列车运行过程中的杂散电流,进而分析在不同地质条件下杂散电流对金属的腐蚀情况。通过对实时监测模拟装置中的工作电流的变化,研究杂散电流的大小和分布规律,为在城市轨道交通的设计、施工和旧线改造过程中削弱或减小杂散电流,提供相关的实验数据。
The existence of stray current in the subway track can cause electrochemical corrosion of the metal buried in the ground. In real-time monitoring system, by changing the structure of the circuit and the power supply positive access point in the circuit to simulate the common rail, intersection, bifurcation and train running in the stray current, and then analyzed in different geological conditions Stray current corrosion of metals. Through the monitoring of real-time changes in the operating current simulation device to study the size and distribution of stray current, in order to reduce or reduce stray current in the design, construction and reconstruction of urban rail transit, to provide relevant experiments data.