earticle

영어

The belt fire in coal mine has the characteristics of fast burning velocity, not easily extinguishing a fire and generating a great deal of poisonous and toxic gas. Once the belt fire happens, it will result in a large number of casualties and enormous property loss, which is one of the greatest disasters that influence on the safety production in coal mine. To reduce the number of casualties and property loss caused by belt fire, the long-distance emergency rescue system for belt fire is proposed, and used to directly import the poisonous and toxic gas produced by belt lane into return airway in order to guarantee the safety of staffs working in mining area. In order to research on how the efficiency of using the system and what the system has additional impact on the ventilation system, the present study applies the approach of numerical stimulation to establish the two-dimensional model of ventilation system. After the belt fire happens, and then this paper researches on the flow laws of poisonous and toxic gas, and explores the long-distance emergency rescue system for belt fire influencing on the ventilation system and controlling the poisonous and toxic gas. The current study yields the conclusions as follows: (1) how poisonous and toxic gas produced by belt fire in different ventilation models spreads and moves in the roadway; and (2) how the long-distance emergency rescue system for belt fire influences on the ventilation system. This research has certain instructive significance and reference value for improving the level of emergency rescue about the belt fire, and reducing the number of casualties and property loss caused by belt fire.