Analysis of ventilation parameters optimization and fans energy conservation in Jinfeng underground mine

Jinfeng underground mine is developed from main slope ramps and transported by large trackless equspments.The mine need advanced ventilation system.The ventilation software VENTSIM is used to simulate the whole mining ventilation system.The air-flow can be distributed contrapuntally and logically,moreover the ventilation structure can be formed on time after the level is broken through,in a way,the simulation result can improve the work efficiency and the production.In addition,through using rigid air-bag logically during the secondary fan ventilation,air resistance can be reduced,and the fans' efficiency and ventilation conditions of tunel faces can be improved.