Study On Optimization Of Mine Ventilation System In No.13Mine Of PingDingShan

Mine ventilation system is one of the important mine systems, which plays a significant role in disaster prevention and the government of mine. Optimization of mine ventilation system is a powerful tool to ensure the safety and efficient of production, and optimized ventilation system has greatly improved in energy efficiency and disaster resistance ability, thereby creating vast economic benefits for the mining companies. Take PingDingShan No.13Mine ventilation system as the research object, based on method in theoretical analysis and computer calculating ventilation network, this paper is studied in several aspects, which includes collection of mine ventilation parameters, measurement of ventilation resistance, selection of ventilation optimization scheme, calculation of each preferred ventilation network, calculation analysis and determination of optimal ventilation scheme. Four optimization schemes are put forward according to the existing problems in the ventilation system, then discussed and compared in detail in views including technology, security and economic point of these schemes.Using3D Vent ventilation management software, this paper calculate ventilation network of east mine ventilation system and the ventilation system improved by the third and fourth scheme. The solved results’ relative error of air volume in each roadway of east mine ventilation system is less than10%. So it is proved that the established ventilation roadway model can be used for the analysis of the ventilation system, also can explored the optimization of the he ventilation system based on this. Finally we chose the fourth scheme after the discussion and comparison of indicators such as safety and reliability, technical feasibility, economic rationality of the third and fourth scheme. The computer solved results which is transformation based on program four shows that the total amount of wind of East Wing ventilation system will increase to105m3/s. The pressure of main fan in the East return air shaft has dropped from 3881Pa to2380Pa, while the amount of wind has reduced from179m3/s to154.5m3/s; the pressure of main fan in-200return air shaft has increased to1788Pa, the amount of air is129.5m3/s, and the amount of air in the main in, return airways and every location with requirement of wind flow are adequate and the phenomenon of overrun air flow never appear. The ventilation system after optimization can realize the independent ventilation between first auxiliary mining area, first mining area and third mining area, also can eliminates the problem of associated angle in each mining area of ventilation system meanwhile and improves the stability of the East-Wing ventilation system. Main fan motor power of east mine ventilation system by transformation of scheme four decreases from908.1Kw to811.55Kw, electricity fee can save676600for one year, which can bring economic benefit for this mine.Therefore, the ventilation system by transformation of scheme four can solve the problems such as lack of air volume and oversizing of ventilation negative pressure in East-Wing ventilation system of PingDingShan No.13Mine, and lay a solid foundation for gas prevention and control of high temperature disaster which meet the requirements of long-term planning in the mine. This topic can provides scientific basis to the optimization transformation of East-Wing ventilation system in PingDingShan No.13Mine, and its research content has a certain theoretical significance and practical value.