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Liu L.,Central South University | Liu L.,The Deep Metal Mineral Exploitation and Hazard Control Key Laboratory | Chen J.-H.,Central South University | Chen J.-H.,The Deep Metal Mineral Exploitation and Hazard Control Key Laboratory | And 4 more authors.
Meitan Xuebao/Journal of the China Coal Society | Year: 2011

In view of the problem that at present, while studying the wind path reliability of mine ventilation system, the main study parameter is that the constraint conditions of air underground is independent. From the causal relationship among the constraint conditions, the curve fitting was used to describe the functional relationships among air status parameters, and a new theoretical computing mathematical model for reliability was put forward. In view of the problem that at present, while determining the type of air-quantity distribution, the main study parameter is that air-quantity distribution is almost recognized to be normal distribution relying on experience, the analysis method of probability graph was used to judge type of air-quantity distribution, and the model of air-quantity distribution based on lognormal distribution was given, which proved that not all air-quantity distribution submits to normal distribution. Normal distribution as its stronger regularity is limited in the practical application, but lognormal distribution has solved the problem. Source

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