Study On The Optimization And Evaluation Model Of Ventilation System In Coal Mine

This thesis studies the project that is the ventilation system optimization and transformation for Liu Dong coal mine as the research basis, according to the actual of ventilation system of Liu Dong coal mine.Taking into account level two of west wing have not yet carried out pioneering and the two wings of the ventilation system air pressure imbalance, put forward optimizating of roadway cross-section from pressure balance, and calculated the 12 roadway cross-section value of the optimal, achieving internal optimization of the ventilation system.Using of computer in the status quo simulation of Liu Dong coal mine ventilation system, reveal the problems in the ventilation system, made six rehabilitation programs, simulate the effect of the implementation of rehabilitation programs using computer, conducte a program of primary.The optimal selection of mine ventilation system transformation schemes is a complicated decision problem, which includes qualitative, quantitative, interdependence, mutual restrictive, and numerous factors. On the base of synthesis consideration three aspects factors: technical, economic and safety. The thesis established a set of comprehensive, scientific new index system of transformation mine, especially raise the service life of the total net present value of this integrated economic indicators.Put forward unascertained measure optimization model and extension program optimization model, carry out optimization of the rehabilitation programs, achieving a desired result.Finally, identify the optimization program of the transformation of the ventilation system,achieving an external optimization of the ventilation system. For simplifies the workload, we set the corresponding software.Through the research work of the thesis, the optimization of ventilation system is accomplished and the goal of ventilation transformation is achieved Significantly economic benefit and social benefit are gained. At the same time, the thesis has certain guiding and reference function for similar coal mines.