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过去川口钨矿局部通风采用抽出式通风方法。这种方法因有效吸程小,风筒进风口距工作面的距离仅允许在2～3米内,实际上又难于办到,加上只单纯依赖机械通风,自然风流不去很好地利用,结果造成风流紊乱,你来我去,同流合污,粉尘浓度一直难
In the past, Kawaguchi local ventilation ventilation using ventilation method. This method due to effective suction small, air duct inlet from the face of the distance only allowed within 2 to 3 meters, in fact, is difficult to do, plus only rely solely on mechanical ventilation, natural romantic not to make good use of, As a result of the turbulence disorder, you come to me, the same pollution, dust concentration has been difficult