金属矿山井下直流杂散电流的研究  

Research of DC Stray Current in Underground Metal Mines

作　　者：孙晓娇[1,2,3] Sun Xiaojiao(Sinosteel Maanshan Institute of Mining Research Co.,Ltd.;State Key Laboratory of Safety and Health forMetal Mines;Huawei National Engineering Research Center of High Efficiency CyclicUtilization of Metal Mineral Resources Co.,Ltd.)

机构地区：[1]中钢集团马鞍山矿山研究院有限公司 [2]金属矿山安全与健康国家重点实验室 [3]华唯金属矿产资源高效循环利用国家工程研究中心有限公司

出　　处：《现代矿业》2019年第5期229-232,241,共5页Modern Mining

摘　　要：直流杂散电流是影响井下作业安全性、可靠性的重要因素。针对这一问题,通过分析直流杂散电流的产生原因,建立贴近实际的杂散电流计算模型,并以山东省某铁矿井下实际条件为背景,通过MATLAB仿真,对比不同参数在不同取值时,杂散电流和轨道电压的变化,分析出影响这二者的主要因素有供电区间长度、机车负载电流、轨道电阻及大地与轨道间的过渡电阻,并提出可以通过改变这些参数达到减小杂散电流的目的。DC stray current is an important factor affecting the safety and reliability of underground metal mines operation.Aim at this problem,a calculation model of stray current distribution parameters was established based on the generation mechanism of DC stray current.Through matrix laboratory simulation analysis which based on the background of actual environmental condition of an iron underground mine in Shandong province with comparing curves of stray current and rail voltage under different parameters variation,the main parameters which affecting the DC stray current and rail voltage were analyzed,there are power supply distance,load current,rail resistance value and transition resistance value between rail and ground.Also,it is suggested that the stray current can be reduced by changing these parameters.

关 键 词：直流杂散电流 分布规律 MATLAB 地下金属矿山 

分 类 号：TD611[矿业工程—矿山机电]