Coal Mine Emergency Converged Dispatch Communication System Solution

I. System Overview

Coal mine safety production and emergency rescue operations place extremely high demands on the reliability, real-time performance, and convergence capability of communication systems. Traditional coal mine communication construction is often planned independently by service, with production wired telephones, emergency broadcast, wireless communication, and alarm linkage systems operating in isolation, resulting in prominent information silos that make unified command and coordinated dispatch difficult during sudden accidents.

By deploying an Emergency Converged Dispatch Communication System, multi-system convergence and linkage among the production wired telephone dispatch system, emergency broadcast system, 5G wireless communication system, and coal mine alarm system can be achieved, enabling voice, video, SMS, and consultation services among terminals connected to each communication system. This forms a "one network, one platform, one dispatch" coal mine emergency communication architecture, comprehensively enhancing the mine's emergency response and command dispatch capabilities.

II. System Composition

This system takes the emergency converged dispatch platform as its core, converging and integrating multiple existing communication subsystems downward. Each subsystem maintains independent operation while enabling service collaboration at the unified dispatch layer:

• Production Wired Telephone Dispatch System: Based on mining digital program-controlled dispatch switching equipment, covering telephone terminals across surface and underground production processes, providing dispatch services such as emergency call, barge-in, forced release, monitor, call pickup, conference call, and recording. It serves as the fundamental voice channel for daily production dispatch and emergency command.
• Emergency Broadcast System: Broadcast terminals covering the mine entrance, pit bottom yard, main haulage roadways, and mining faces, supporting zone broadcasting, mine-wide broadcasting, broadcast/intercom paging, and emergency alarm announcements for accident warning, evacuation command, and information dissemination.
• 5G Wireless Communication System: Based on underground 5G private network base stations and wireless terminals, providing high-bandwidth, low-latency mobile communication capabilities, supporting voice calls, HD video backhaul, data collection, and positioning services, compensating for the coverage limitations of fixed telephones in mobile scenarios.
• Coal Mine Alarm System: Integrating safety monitoring alarm information such as gas, carbon monoxide, temperature, water level, and power feed status. The alarm linkage platform automatically triggers audible and visual alarms, broadcast notifications, and dispatch console pop-ups, achieving closed-loop hazard warning and emergency response.

III. Multi-system Convergence and Linkage

The emergency converged dispatch platform uniformly connects the above subsystems through protocol adaptation and signaling interworking:

• Unified Directory and Unified Numbering Plan: Terminals of each subsystem are incorporated into a unified numbering and directory system, allowing dispatchers to call any type of terminal through a single dispatch console without memorizing multiple dialing rules.
• Service Linkage: When the coal mine alarm system detects an abnormality and confirms an alarm, the platform can automatically trigger the emergency broadcast system to issue evacuation instructions, link the 5G wireless system to push SMS and notifications to relevant personnel terminals, and simultaneously call duty telephones in the production telephone dispatch system, achieving one-click linkage and multi-party coordination.
• Cross-system Calling and Transfer: Call transfer, call pickup, and multi-party consultation can be realized between production telephones, 5G wireless terminals, and broadcast terminals, breaking system boundaries and ensuring personnel in any network can be quickly located and reached at any time.

IV. Core Service Functions

• Voice Services: Supporting unified addressing calls among terminals of all systems, emergency calls, barge-in, forced release, monitor, call pickup, recording, and other dispatch voice functions, with the entire call process manageable and traceable.
• Video Services: Integrating video sources such as 5G wireless terminals and fixed video surveillance, supporting on-site video backhaul, video dispatch console viewing, and multi-party video consultation, enabling commanders to "see" the underground site while commanding.
• SMS Services: The platform pushes warning SMS, dispatch instructions, and notification messages to wireless terminals and management personnel's mobile phones, ensuring "SMS delivery even when calls cannot connect" as a fallback communication guarantee.
• Consultation Services: Supporting multi-party telephone conferences and audio/video consultations, enabling duty dispatchers, mine leaders, rescue teams, and expert groups to organize emergency consultations at any time for rapid disaster assessment and rescue deployment.

V. System Features

• Multi-network Convergence, Unified Dispatch: Integrating fixed telephones, broadcast, 5G, alarm, and other systems into a unified platform, eliminating information silos and completing all emergency communication organization through a single platform.
• High-reliability Design: The core platform supports dual-machine hot standby and redundant networking, with primary/backup protection for critical links. Underground equipment meets mining explosion-proof and protection requirements, ensuring uninterrupted communication under extreme conditions.
• Rapid Emergency Response: Mechanisms such as one-click linkage, automatic alarms, broadcast evacuation, and SMS fallback shorten emergency response time and enhance the mine's capability to handle sudden incidents.
• Open and Scalable: The platform is designed based on standard protocols and open interfaces, allowing smooth integration of future communication subsystems and service applications while protecting existing investments.
• Easy Operation: The dispatch console features a simple interface with graphical presentation of each system's status, low training costs, and quick onboarding for duty personnel.

VI. Application Scenarios

• Daily Production Dispatch: Unified dispatch of surface and underground production telephones and wireless terminals for rapid task assignment and coordination.
• Accident Emergency Rescue: Alarms trigger linked broadcast evacuation, SMS notifications, and multi-party consultation, with the command center organizing rescue operations in a unified manner and monitoring underground site conditions in real time.
• Maintenance and Inspection Operations: Maintenance personnel maintain voice and video contact with the dispatch center through 5G wireless terminals, making the work process visible and controllable while ensuring personnel safety.
• Emergency Drills: Organizing mine-wide emergency drills through the system, with full audio and video recording of the drill process, post-drill review and evaluation, and continuous improvement of emergency plans.

VII. Summary

The coal mine emergency converged dispatch communication system takes the converged dispatch platform as its hub, deeply integrating the production wired telephone dispatch system, emergency broadcast system, 5G wireless communication system, and coal mine alarm system. It achieves cross-system coordination of voice, video, SMS, and consultation services, building an integrated communication assurance system for "daily production dispatch and wartime emergency command." It is critical infrastructure for enhancing coal mine safety production levels and emergency rescue capabilities.