CO2-N2赋存煤层综放工作面多参量变化趋势及相关性

为弄清CO 2-N 2赋存煤层采煤工作面CO来源和风流温度，CH 4、O 2和CO浓度的变化趋势及相互影响，选取不连沟煤矿F6103综放工作面为研究对象，对包括风流温度,CH 4、O 2和CO浓度连续进行了35 d的观测。综合运用最小二乘法、数理统计法和Matlab工具对观测数据进行处理和分析。结果表明，沿F6103综放工作面全线布点的2、3、4、5、6处风流温度,CO和CH 4浓度基本上是随距进风巷距离增大而增大，峰值多出现在回风端头测点6。回风隅角测点8处风流温度,CO和CH 4浓度在历时35 d的观测中基本上与时间成4次多项式变化。通过自相关系数计算可知，测点6和8处CO浓度分别与其测点处O 2浓度呈负相关关系，与温度和CH 4浓度呈正相关关系。通过比相关系数计算可知，测点5和8处CO浓度和温度分别与测点6处O 2浓度呈负相关关系，与测点6处CO、CH 4浓度和温度呈正相关关系；测点5和8处CH 4浓度分别与测点6处O 2浓度和温度呈负相关关系，与测点6处CO、CH 4浓度呈正相关关系。CO来源主要由3个方面构成,分别是井下柴油车运行释放的CO，大功率割煤机和煤体相遇瞬时高温氧化产生的CO和破碎煤体与氧的复合氧化产生的CO。

Variation trend and correlation of multi-parameters in the workface in the coal seam containing CO_2 and N_2

The mechanized mining face of F6103 in Buliangou Coal Mine was selected to make clear the source of CO and investigate the variation trend and correlation of the airflow temperature,the concentration of CH4,O2 and CO.First the parameters were observed and recorded in thirty-five consecutive days.Second these observational data were handled and analyzed by Matlab on the basis of the least square method and the mathematical statistical method.The analysis results show that the airflow temperature,the concentr...