Optimization of Combined Operation Ventilation System of Double Main Fans
[Purposes]In order to solve the problem that the air volume of the Ding-group fan is rich and the load of the Ji-group fan is too large in the late mining period of the combined operation ventilation system of the double main fan in Pingmei No.9 Mine,it is necessary to optimize the mine ventilation sys-tem under the combined operation of the double main fan.[Methods]By using the method of numerical simulation,the medium and long-term ventilation Ventsim three-dimensional visualization model of the ventilation of Pingmei No.9 Coal Mine is constructed,and the relevant optimization schemes are put for-ward.The different schemes are compared and analyzed from the aspects of ventilation effect and techni-cal economy.[Findings]According to the research results,by expanding the roadway section of the high resistance sections such as the Ji-2 return air downhill of the east wing,the Ji-2 return air of the group and the total return air downhill to 16 m2,and by using the new return air joint roadway that is used to communicate the Ji-2 return air of the group and the total return air downhill,and reduce the angle of the Ding-group fan to-14°,the Ding-group fan is responsible for the Ji-2 return air downhill of the east wing,and the Ji-group fan is responsible for the Ji-2 return air downhill of the west wing,which effectively re-duces the ventilation resistance of the mine,realizes the on-demand distribution,meets the requirements of the air volume of each wind site,and ensures that the air volume and air pressure borne by the fans are more reasonable.[Conclusions]The optimization scheme effectively solves the problems existing in the mine,and is convenient to improve the information management level of the mine ventilation system.
mine ventilationdouble main fanventilation networkanalogue simulation
NETL
NSTL
万方数据
