Study On Ventilation System Optimization Of 780 Pit Deep Mining In Daping Gold Mine

Mine ventilation system is an important part of the mine production system, ventilation effect directly affect the operation environment of mines. Mine production activity is a dynamic change, when ventilation system does not meet the production requirement, it shall timely modification and optimization of the ventilation system. This paper takes 780 pit in Daping gold mine as researching background. Through surveys,finding some problems with the current ventilation system. Its air quantity is insufficient, the airway is too long, and the underground working environment is too bad. According to the mine ventilation system optimization theory to carry out the study of ventilation system optimization, the main contents as follows.1.Through the mine ventilation system technical test to determine the main problems of the ventilation system. According to long-term planning of the mine to determine the air quantity of the deep mining.2.To utilize roadways in existence. Based on the former, formulate three vertilation system optimization schemes. The optimization theory of roadway section is used to optimize the section of roadway, consequently a superior section is found.3. Based on the section optimization, making use of the 3Dvent ventilation software to draw mine ventilation system graphs, creating ventilation roadways, seting related parameters. Ventilation network solution and air simulation are carried out in the end.4.To establish judgment index system. By using a combination weighting based on analytic hierarchy process (AHP) and scatter degree.The weight of indicators is determined in the end. By using the multi-objective decision method, a complete comparison will be carried out by the highest integral method to different schemes and then the best scheme can be decided.