Emergency mine communications

EMERGENCY MINE COMMUNICATIONS (EN: emergency communications, emergency mine communications; DE: Notverbindung; FR: communication de secours; ES: comunicacion de emergencia; RU: аварийная связь шахтная) is the set of the ways and the means for the underground workings, which ensures the emergency transmission of the alarm signals, and the reports about the accident or other dangers, which threaten the health or the lives of the people, as well as the operative exchange of the information at the times of the accident response and the recovery activities.

The main requirements to the means of the emergency communications are the timeliness of the communications, the failproof operation, the reliability during the emergency at the time of the receiving of the transmitted commands and messages. The ability to work together with the specialized automated dispatcher control devices, as well as the group and circular notification of the people in the underground workings, are stipulated at the time of the creation of the hardware means for the emergency communications.

The (IGAS-3, GIS-1) specialized equipment for the (loud speaking) sound communications and signaling is used in the USSR for the transmission of the information about the accident, which in combination with the SHATS-3 telephony equipment allows to create the unified spark safe complex system for the emergency communications and the technological communications.

The communications equipment that enables the chief of the mining rescue teams to carry out the continuous control of all the detachments, which are performing the rescue activities, is used at the times of the accident response and the recovery activities. The list of these means includes the "Shahtofon-1" telephony equipment with the PGS-2 two wire cable, the "Donetsk-1M" portable high frequency communications apparatuses, and the "Ogonek-3" apparatuses for the personal use, which are nested into the thermal protection suits of the workers with respirators. The high frequency communications equipment operates at the frequency of 78 kilohertz; various metal rails, which are laid from the surface to the underground workings, are used as the channel for the communications.

The prospects of the development of the emergency communications systems are associated with the development and the introduction at the mining enterprises of the unified complex systems of the technological communications and the emergency communications, including the systems for the common mine-wide communications and the dispatching telephony, the special loud speaking emergency communications, the signaling and the accident notification.