Research On Mine Airflow Control Technology And Applications Based On3D Simulation System

The importance of the airflow in mines is to ventilation system what blood is to the circulatorysystem of the human body. Airflow in a reasonable and effective mobility is an importantguarantee for the underground mine production safety. With the development of mining, mines byincreasing mining depth, expand the scope of exploitation and increasing mining strength toexpand production capacity. It makes ventilation system more complex and the airflow regulationchallenges become more prominent. It often appears problems such as airflow’s short circuit,circulation and even stagnation et al, which lead to unreasonable of air distribution and low-efficiency ventilation, to be hazards of mine safety. Regulation of mine air is affected by multiplefactors such as ventilation network, natural wind pressure, main fan and ventilation structures.Traditional network analysis methods and airflow control technology is difficult to effectivelyimprove the ventilation of complex systems. Therefore, this paper applied the three-dimensional simulationsystem to analyze the impact of multiple factors on mine merry and research the merry control technology.Themain contents and conclusions are as follows:(1)Design architecture and simulation calculation model of3D simulation and optimization ofmine ventilation system were analyzed. The factors and reliability of ventilation network solutionwere researched by numerical experiments. The results show that: the simulation solver was moreaccurate when solver accuracy to take10-5m3/s and the initial amount of wind to take10m3/s.(2)The real-time calculation model of natural wind mine was drawn by Visual Basic language,and analyze the influence of natural wind pressure on mine ventilation systems and airflow. Themodel could provide a basis for the regulation and control of natural wind pressure.(3)Mine air stability,thermal comfort and effectiveness evaluation model and the index werecreated by a comprehensive analysis of the law of ventilation network and the PMV-PPD index.The models provide a basis for regulating air flow by evaluating mine air effect.(4)The structure, type, function, regulatory factors, and merry theoretical model of merry chamber-typecontrol technology was analyzed to determine the conditions and the scope of application. Based on theregulation theory model, applying the three-dimensional simulation analysis of mine ventilation system, theselection method of merry chamber-type control technology was first proposed. The airflow short circuits andinsufficient air flow of work surface in mechanized panels were effective solved by using this method. (5)A Jiangxi copper mine ventilation system and romantic effect were comprehensiveanalyzed and evaluatied by testing.The reasonable air flow regulation plan was presented by researchingon simulation and natural wind pressure. The mine air distribution was more reasonable and theventilation was better after implementation of the program.