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当前各地煤矿随着矿井的逐渐转向深部开采,愈加重视对生产与安全的集中监控。譬如,在生产中对带式运输机、电力系统、压气系统等方面的监控,在安全上对瓦斯、一氧化碳、风速等方面的监控,都会使井下与地面相互联系的通讯量逐年增加。但是,为了传递监控信息,需要在狭小的巷道里吊挂许多通讯电缆,这在矿井逐渐加深的条件下是很困难的。尤其是容易遭受从其附近设置的电缆、变压器、生产机械等所发出电磁
At present, coal mines around the country gradually shift to deep mining, pay more attention to the centralized monitoring of production and safety. For example, the monitoring of belt conveyors, power systems, air compressing systems and other aspects of safety monitoring of gas, carbon monoxide and wind speed in production will increase the amount of communication between the underground and the ground. However, in order to transmit monitoring information, it is necessary to hang many communication cables in narrow tunnels, which is difficult when the mine is deepening. In particular, it is susceptible to electromagnetic waves emitted from cables, transformers, production machines and the like provided in the vicinity thereof