一种可降低长壁工作面矿工吸尘量的新方法,是沿整个工作面长度方向保持两股风流。用风帘可在人行通道中形成一股新鲜风流,面在工作面输送机上方形成一股含尘风流。美国矿业局早就利用了风帘,并通过试验对该设想进行了评价。试验表明,风帘能使煤尘远离矿工,其效率几乎达到100％。但对采煤机司机来说,又出现了可见度低的问题,影响了采煤机的效率。 A new method to reduce the amount of dust in the longwall face miners is to maintain two streams of wind along the length of the working face. With the air curtain in the pedestrian passage to form a fresh air flow, the surface of the conveyer above the formation of a dust flow. The U.S. Bureau of Mines has long used the windscreen and evaluated the concept through experiments. Experiments show that the curtain can make coal dust away from the miners, its efficiency is almost 100%. However, for the shearer drivers, the problem of low visibility appeared again, affecting the efficiency of shearer.