Optimal Design of Ventilation System in Coal Mine with High Wind Resistance
In order to solve the problems of high ventilation resistance in south air shaft of Yangquan Fifth Mine,insufficient air volume in some underground areas and poor ventilation safety,a precision wind resistance test scheme is proposed.It is found that the ventilation resistance in the return air section is as high as 1 405.9 Pa,which is 63%of the total wind resistance.Therefore,three optimization schemes of mine ventilation system are put forward,and the different schemes are compared in detail.It is determined that adding a parallel lane of west main return air and reducing the Angle of fan from 32°to 26°is the best scheme.This scheme can not only meet the ventilation demand of each area of the mine,but also reduce the ventilation resistance of the mine ventilation system by 36.8%,reduce the energy consumption of the fan op-eration by 4.4%,save electricity and equipment maintenance costs of about 1.27 million yuan per year,and significantly improve the safety and economy of the ventilation system.
万方数据
维普
