Study on Optimized Plan of Mine Ventilation System Reconstruction in Longtan Coal Mine

In order to solve the insufficiency of the mine ventilation capacity in Longtan Coal Mine and the ventilation system lost balance problems occurred after the mine technical reconstruction and production capacity expansion,based on the basic parameter measured results of the mine ventilation system and the mine late production layout,the paper analyzed the main problems restricting the mine ventilation capacity.Paper proposed that the no application connection gateway should be timely sealed and the stockpiling material in the gateway should be timely taken away in order to reduce the local resistance in the gateway.There were four reconstruction plans proposed for the mine ventilation system.The management software of the mine ventilation system was applied to the ventilation simulation calculation of the optimized reconstruction plans for the mine ventilation system.Meanwhile,the paper analyzed the economic investment and the ventilation operation benefit and two optimized reconstruction plans of the optimum mine ventilation system were determined.