井下轨道运输大巷敷设电机车架空线时,往往由于大巷测量腰线标注不准确、轨道面标高的误差、巷道断面变化的影响、架空线悬吊重量的影响以及人工号眼、打眼、预埋架空线横拉钩等各种施工误差,时常造成敷设的电机车架空线高度不满足验收规范的要求,致使大量架空线以及横拉钩被返工,既影响施工进度,增大了成本,也极大地影响了施工人员工作的积极性。城郊煤矿井下大巷敷设电机车架空线时,认真总结经验教训,从而彻底杜绝了各种误差造成的返工现 Downhole track transportation motorway overhead lines when laying, often due to lanes measurement labyrinth line inaccuracy, the error of the elevation of the track surface, the impact of changes in roadway sections, the impact of overhead line suspension weight, as well as the artificial eye, drilling, pre Buried overhead line horizontal hook and other construction errors, often caused by the laying of the motor vehicle overhead line height does not meet the acceptance requirements of the specification, resulting in a large number of overhead lines and horizontal hooks are rework, both affect the construction progress, increasing costs, but also greatly Affect the enthusiasm of the construction workers. Suburban coal mine underground motor vehicles laying overhead lines, the serious lessons learned, so as to completely eliminate the rework caused by various errors are