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本文总结了风流循环对瓦斯浓度影响的数值试验和实验室试验的研究成果。在模拟的矿井通风网路上进行了数值运真。利用内华达、雷诺的麦克尔学校矿井风流监测系统(MSM)进行实验室试验。这两种情况均借助一台主扇和一组局扇使系统风流产生循环。将局扇安置在不同的位置以产生两种循环方式:串联循环和联络巷循环。每一种方式,通过改变局扇的压力产生不同的循环条件。每次测试期间,模拟的工作面瓦斯涌出率保持恒定。研究表明,可控循环风可以用来改善矿井某一区域的通风系统。
This paper summarizes the research results of numerical and laboratory tests on the effect of airflow circulation on gas concentration. Numerical simulation was performed on a simulated mine ventilation network. Lab tests were conducted using the Merck School Mine Airflow Monitoring System (MSM) in Nevada and Reno. In either case, the system airflow is circulated by means of a main fan and a set of fans. Place the fan in a different location to create two ways of circulation: a tandem loop and a tiered lane loop. Each way, different circulation conditions are created by changing the pressure of the fan. During each test, the simulated gas emission rate of the working face remained constant. Research shows that controlled circulation of wind can be used to improve the ventilation system in a certain area of the mine.