Identification and Control of Diagonal Branches in Mine Ventilation System with Double Air Shafts and Double Mining Areas
In response to the problem of diagonal branches in the ventilation system of the second level mining of Liangshuijing Coal Mine,the network calculation method was used to obtaine a mine ventilation schem without any diagonal branch in breezy state.It has been clarified that diagonal branches are common and inevitable in the mine ventilation network,and diagonal breeze branches are the key issues.Two ventilation system layout schemes were proposed,and their respective effects were obtained through mine ventilation network calculation.In Scheme 1,fresh air enters from both ends of the main roadway in the mining areas,and a diagonal breeze airway appears in the middle section of the main roadways in the mining areas.The corresponding solution needs to increase the air consumption and the engineering quantity of the roadway.The selected second scheme utilizes the old main roadway in the mined area to introduce fresh air from the second intake shaft and another group of intake shafts from the same end of the main roadways in the mining areas,avoiding the formation of diagonal breeze branches.The research results provide technical support for the second level safe mining of Liangshuijing Coal Mine.
mine ventilationdiagonal networkventilation network calculationdouble air shafts
万方数据
维普
