1、绪言目前各国已对可以管理的循环风的利用加以注目,为此本研究用电子计算机模拟器对包含采煤工作面在内的通风网络在产生循环风时的瓦斯浓度变化、降低制冷设备动力和提高运转效率等方面进行了考察。2、煤矿通风网络模型煤矿通风网络的模型,是由实际生产 1. INTRODUCTION Nowadays all countries have paid attention to the utilization of the circulating air which can be managed. For this reason, this research uses computer simulator to analyze the change of gas concentration in ventilation network including coal mining face, Power and improve operational efficiency and other aspects of the inspection. 2, coal mine ventilation network model Coal mine ventilation network model is produced by the actual