Experiment study on preventing and extinguishing fire using stopping agent

In order to solve the problem of low efficiency for preventing and extinguishing fire, the principle of preventing and extinguishing fire using stopping agent was analyzed. Affusing liquid system for Coal seam was founded in the scene through selecting many stopping agents to experiment. The result showed Na₂CO₃ which concentration is 10 percent was the better reasonable as stopping agent of preventing and extinguishing fire for coal seam. It have good effect with checkout in the scene. This result provide science basis for preventing and extinguishing fire.