自然风压在井下通风系统的应用与研究

Application and Research of Natural Wind Pressure in Underground Ventilation System

介绍了自然风压的产生原因和形成原理,通过理论推导得出自然风压的计算公式。以一个受自然风压影响较大的矿井为例,并以近两年的现场检测数据为依据,分析自然风压的影响因素,进一步阐述了自然风压对井下通风系统的影响,在此基础上,采取相应的改进措施,抑制了自然风压对矿井通风的负面作用。提出了自然风压是有规律可寻的,冬季,自然风压促使风流上行;夏季,自然风压促使风流下行。充分认识和利用这些规律可以避免因自然风压的存在而对矿井通风造成的影响。

This paper introduces the causes and formation principles of natural air pressure, and derives the formula of natural air pressure by theoretical deduction. By using one coal mine largely influenced by natural wind pressure as the case and nearly two years of field test data as the basis, the influencing factors of natural wind pressure are ana- lyzed, the influences of natural wind pressure on mine ventilation system are elaborated and on this basis, some corre- sponding measures are adopted according to inhibit the negative effects of natural wind pressure mine ventilation. It is proposed that natural air pressure can be traced regularly. In winter, the natural wind pressure causes the air flow up- ward and in summer, the natural wind pressure causes the airflow downward. The full understanding and utilization of these laws can avoid the influence of the natural wind pressure on the ventilation of the mine.