Optimization of the ventilation system scenario in coal mine

Taking advantage of the approach of expert -score to decide the judging indexes of the ventilation system in coal mine, utilized the method of relative importance sequence matrix, we have found the weight coefficients of the indexes. The importance of each indexes are not the same and there are contradiction between them. And we have determined the way to optimize the ventilation system via the practice of optimizing some ventilation system scenario. The optimization of ventilation scenario can strength the power of a coal mine to fight back the disaster. Under the condition of providing sufficient fresh air for the operation, there are many viable ventilation scenarios in;the term of technology. In order to determine the best plan from the scenarios which is safe, economic and might in fighting against the disaster, the optimization method is needed. What is most important for optimizing the ventilation scenarios is to determine the indexes and method, for they will influence the outcome of the optimization directly. Through the practice of optimizing many ventilation system coal mines, we have gained the judging indexes and optimization method.