| The frictional resistance coefficient of mine roadway is an important technicalparameter for the mine ventilation design and the calculation of technical transformationproject establishment of the mine ventilation. In order to obtain the accurate frictionalresistance coefficient of mine roadway with different support mode, based on a largenumber of mine ventilation resistance tests, the frictional resistance coefficients of mineroadway are statistically induced for different supporting modes. From the point of viewof statistics, according to the relevant theory and practice results, through applying thesoftware of SPSS and Bootstrap resampling statistical analysis, the obtained data areanalyzed with cluster analysis, abnormal value of the box plot analysis, Kolmogorov-Smirnova inspection and Shapiro-Wilk inspection. Based on the measured data,, thetwo testing method obtained that frictional resistance coefficient does not follow thenormal distribution after eliminating the extreme value and abnormal value. And byusing the Bootstrap resampling statistical method, the confidence interval95%of valuerange is obtained forthe frictional resistance coefficient through statistical calculation.The statistical results of friction resistance coefficient are applied to another coal mine,and the correlation is highly significant through the measured and applicationcalculation of the hectometer friction ventilation resistance comparison and correlationanalysis. All that verifies its correctness so as to improve the calculation accuracy andreliability of rough measured roadway friction resistance coefficient in the minedifferent supporting modes. It has an important guiding significance for the mineventilation safety management. |
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