Statistical Analysis for Ventilation Resistance Characteristics of Bolting and Shotcrete Roadway in Nanyangpo Coal Mine

摘要

The statistical analysis for frictional resistance of bolting and shotcrete roadway is carried out by using the software of SPSS and statistical principle and combining the coal mine ventilation theory with the actual situation in Nanyangpo coal mine. The results show that the frictional resistance coefficient does not follow normal distribution and the 95% confidence interval is 0.0063～0.0087 N·s~2/m~4 for frictional resistance coefficient of bolting and shotcrete roadway. The comparison analysis of hectometer friction ventilation resistence is carried out between the statistical results with the actual measurement data in Nanyangpo Coal Mine, and its correlation is highly significant. It verifies that the statistical results is right. It has important application value for increasing the ventilation management level and ensuring the safety production of coal mining enterprises.