Study On The Optimization Of The Ventilation System From The Middle Section 950 To The Middle Section 1000 Of The Malipo Xinzhai Tin Mine

As one of the most important auxiliary systems in mining activities,mine ventilation system is constantly changing with mining depth,output and mining area layout.Therefore,when the mine ventilation system cannot meet the needs of mine production,it should be timely transformed and optimized to meet the needs of mine production.Based on the subject of "special design of 350t/d mining project of xinzhai tin mine of yun nan zhongjin republic resources co,to restore production safety and regulate downhole ventilation system,this paper conducts an in-depth study on ventilation problems,air leakage,air pollution circulation and other problems in the 975 middle section of malipoxinzhai tin mine :Check and read the theoretical research and engineering case processing done by domestic and foreign scholars on the optimization of mine ventilation system to find the methods and ideas for the optimization and transformation of the ventilation system.through the study of mine ventilation system optimization technology,elaborated how to abstract the mine ventilation system by graph theory into a mathematical model to analyze,adhere to the basis of mathematical model based on the analysis of the three laws of wind flow,and generalizes the theory of Hardy-cross iteration method,the second for optimizing ventilation system theory is studied.xinzhai tin on the present conditions of the mine ventilation system,determination,air volume after calculation and analysis to find out the problem,in view of the existing problems,and proposed the three reasonable ventilation system retrofit scheme,and with the aid of 3 dvent decoding software map ventilation system of mine ventilation,ventilation network solution scheme of three respectively,according to the result of 3Dvent ventilation calculation software for analysis.Finally,an evaluation index system of ventilation system was established,and a fuzzy comprehensive evaluation optimization model of gray relational degree and a mathematical model of osculating value method were established by using analytic hierarchy process,fuzzy mathematics and gray theory to optimize hair follile and select the relatively optimal ventilation system optimization scheme.