Coal Mine Fire Prevention Solutions

Using our flame retardant powder, diluting it with water, and spraying it on coal mines can prevent the coal mines from spontaneous combustion. The effect is very good, saving time, effort, and costs.

I. Prevention of Internal Fires (Coal Seam Spontaneous Combustion)

1. Source Control

   • Identify the spontaneous combustion tendency of coal seams (classified into three levels) during geological exploration. Optimize mining design to avoid irregular coal pillars, accelerate working face advancement, and seal goafs promptly.
   • Use grouting, filling, and other technologies to plug air leakage channels; establish a pressure equalization ventilation system to reduce oxygen supply.

2. Technical Prevention and Control

   • Inject yellow mud grout into goafs, and inert gases like nitrogen or carbon dioxide to lower oxygen concentration.
   • Spray retardant agents (e.g., calcium chloride) or inject gels/three-phase foam to wrap coal bodies for cooling and oxygen isolation.
   • Improve coal recovery rate, promptly clean floating coal in roadways to prevent accumulation.

II. Prevention of External Fires (External Fire Sources)

1. Strict Control of Open Flames and Fire Sources

   • Approve underground welding/cutting operations with safety measures, equip fire extinguishers and sandboxes, prohibit 火种 (fire sources) in mines, and regulate blasting material management.
   • Use explosion-proof tools to avoid sparks from metal friction.

2. Electrical and Equipment Fire Prevention

   • All underground electrical equipment must meet explosion-proof standards with overload/short-circuit protection; use flame-retardant cables and regular maintenance.
   • Belt conveyors adopt flame-retardant belts with slip/deviation protection devices; install fire-fighting equipment at conveyor heads/tails.

3. Combustible Material Management

   • Use flame-retardant hydraulic fluids, clean up flammable materials (lubricants, cotton yarns) promptly, and reduce the use of pit wood and polymer materials.
   • Implement strict gas inspection and dust control to prevent explosion ignition.

III. Monitoring and Early Warning System

1. Technical Monitoring

   • Bundle tube monitoring systems continuously detect gas concentrations (Oâ‚‚, CO, etc.) in goafs; CO concentration is a key indicator for spontaneous combustion early warning.
   • Temperature probes and optical fiber thermometers monitor key areas; smoke sensors are installed in belt roadways and other fire-prone zones.

2. Manual Inspection

   • Regularly check closed walls and coal seams for signs of heating, water mist, or kerosene odor. Evaluate fire risks using mathematical models.

IV. HPMC

1. System Construction

   • Improve supply systems for fire-fighting materials (grout, nitrogen, etc.), set up fire material warehouses with extinguishers and water pipes underground.
   • Establish fire water pools to ensure water pressure and volume meet standards.

2. Emergency Plans and Drills

   • Formulate special fire emergency plans, clarify alarm procedures and evacuation routes. Underground personnel must carry self-rescuers and undergo regular drills.

Summary: Coal mine fire prevention focuses on eliminating combustibles, controlling oxygen, and isolating fire sources, constructing a comprehensive system through scientific design, technical monitoring, strict management, and emergency preparedness. Key priorities include preventing coal seam spontaneous combustion and belt conveyor fires.

Using our flame retardant powder, diluting it with water, and spraying it on coal mines can prevent the coal mines from spontaneous combustion. The effect is very good, saving time, effort, and costs.