The objective any mining company like TATA STEEL is to reduce the amount of energy used in mining through the increase in employee productivity and safety. Mining operations consist of several tasks. The highest efficiency can only be achieved with full coordination among the persons carrying out these tasks and if the locations of vehicles and people are known by those who coordinate the activities.
In addition, the large number of risks of explosion has the potential to cause a major accident. Therefore, the establishment of a better communication system for the mine underground is very important and significant to modernize the mine management, increase the labour productivity, and strengthen the security to protect the lives and property of the mines.
At present, cable telephone communication, power line communication, sensor communication, telecommunication, leakage communication, and radio communication are the main forms of communication in a mine. Our study shows that, a variety of mobile communication methods have their limitary application under coal mine.
Some mines still use hardwired wall-mounted telephones. The disadvantage of this technology is the obvious necessity that the user cannot be mobile. To reach this person, the caller must page the person who must then go to a wall-mounted telephone that may be a long distance away and in the case of an accident the telephone may be inaccessible to the injured person.
Another popular technology , Leaky Feeder technology requires a relatively stiff,hard-to-install cable, about 5/8” in diameter, to be installed everywhere where communication is desired. To communicate the user must be in line-of-sight of the cable and not more than thirty or eighty feet away from the cable.
According to a survey... [continues]
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