According to the geological survey report of the new mine, all data related to coal seam dust explosion identification must be thoroughly documented and available. For every new mining depth or level, a coal dust explosion test should be conducted to ensure safety standards are met. The mine must establish a comprehensive dust suppression water supply system. Any mining area without a proper dust-proof water supply line is strictly prohibited from operation.
All main transportation tunnels, conveyor belts, inclined and horizontal roads, uphills, downhills, transport lanes, return airways, excavation tunnels, coal bunkers, coal chutes, discharge points, and unloading areas must be equipped with dust-proof water pipes, branch lines, and valves. The dust suppression water must be filtered to maintain quality. However, this requirement does not apply to water-based mining operations or areas where water is used for extraction. All coal bunkers and chutes in the mine must have a layer of coal on top to prevent emptying; if there is a risk of water inrush, they may be vented, but once opened, the bunker gates must be closed and diversion piping installed. Coal chutes must not be used as ventilation pathways.
Mines operating in areas with high coal dust concentration or explosive coal seams must implement specific measures to prevent and isolate dust explosions. This includes separating hazardous zones such as adjacent mining areas, coal seams, and roadways connected to coal mining faces using water barriers or rock dust barriers. It is essential to regularly remove floating coal, clean or wash accumulated dust, and distribute rock dust periodically. Major roadways should be brushed regularly to maintain safe conditions.
Every year, mines are required to develop and implement comprehensive dust control strategies, including prevention and isolation measures, along with effective management systems. Additionally, mines must conduct weekly inspections to ensure that the location, quantity, water or rock dust volume, and installation quality of explosion protection facilities meet the required standards. These ongoing efforts help maintain a safe working environment and reduce the risk of coal dust explosions.
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