风路敏感特性对通风系统风流稳定性的影响

Research on the Influence of Airway Sensitivity on the Airflow Stability of Mine Ventilation System

为了明确影响矿井通风系统主要需风风路风流稳定和主要通风机运行稳定的高敏感风路,采用多元回归分析法对通风网络中高敏感风路进行识别,确定主要需风风路的风量Qj与各风路风阻自变量Ri间的最优回归方程,并通过网络解算进行实验验证。对比发现:多元回归分析结果与试验结果吻合,表明风路的敏感性是通风网络结构特性的一种体现,与其自身的风阻特性无关;高敏感风路特性的改变是影响矿井通风系统风流稳定的关键;同时,采用多元回归分析法可避开传统的角联结构分析中推导风向判别式的繁琐,对某一待研究的重点风路而言,可将矿井其它风路对其风流稳定性的影响作出定性分析与评价。

To definite the high sensitive airway which affects the airflow stability of main airway and stable operation of main fan in mine ventilation system,the multiple regression analysis method is applied to recognize the high sensitive airway in mine ventilation network,while the optimum regression equation between the air quantity（Qj） of main airway and independent value of ventilation resistance（Ri） in each airway is established,and the results are verified by network calculation.The comparison shows that the multiple regression results are consistent well with the test results,which means the airway sensitivity is an embodiment of the structure property of ventilation network,and is independent of the airflow resistance.Meanwhile,the change of high sensitive airway is the key to affect the airflow stability in mine ventilation system.Moreover,using the multiple regression analysis can avoid the difficulties in derivation of airflow directional discriminant in the traditional diagonal structure analysis,and can give qualitative analysis and evaluation on the airflow stabilities of other airways in mine.