关键词:

采煤工作面 , 通风系统 , 胶带火灾 , 采煤工作面降温 , 独立通风

Abstract: A new ventilation system is proposed to improve the intake side structure of the coal mining face in response to the poor disaster resistance of the ventilation system in China’s coal mining face in dealing with the frictional heat generated by the main conveyor belt and belt fires. The new ventilation scheme takes the belt roadway of the coal mining face as an independent air supply point, forming a “one-intake, two-consumption-point” ventilation system. On this basis, the advantages and disadvantages of the “one-intake, two-consumption-point” ventilation system are analyzed, and an example is used to illustrate its scope of application and feasibility of implementation. The research results show that the new ventilation system can not only enhance the disaster resistance of coal mining face in case of fire, but also alleviate the heat damage of high-temperature coal mining face and improve the air quality of coal mining face. The formation of this new ventilation system requires a small amount of engineering, which can be achieved by adjusting the demolition time of relevant ventilation structures and adding a small amount of engineering on the basis of the original “two-intake, one-return” coal mining face ventilation system. The calculation results indicate that the necessity of using this scheme is more prominent when the length in the advancing direction of the coal mining face is greater than 2500 m.