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随着矿井综采机械及大型运输设备的投入使用,综采工作面及运输巷道越来越长,在巷道扩修或矿车掉道、翻车等意外事故发生时,巷道中铺设照明、信号及红绿灯电缆
With the fully mechanized coal mining machinery and large transport equipment put into use, the fully mechanized mining face and the transport lane longer and longer, in the laneway repair or car off, rollovers and other accidents, the laying of lighting tunnels, signals and Traffic light cable