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水平坑道掘进,利用局部扇风机进行通风时,由于各个时期对通风的要求不同,而需要改变通风方式,即进行反风。例如:爆破后为了迅速的排除爆破所产生的有害气体,采用抽出式的通风方式是合理的,但是,当坑道掘进进行运搬作业时,为了保证供应足够的新鲜空气送达工作面,不能停止扇风机运转,并以压入式通风较为可靠合理。我矿通风工王庆奎同志创造性的解决了局扇的反风问题,茲将王庆奎同志提出的并经改进后的反风装置介绍如下(参看附图):反风装置由铁风筒1、2、3、5、6、段,帆布风筒4及用膠皮做成的密闭盖7、8组成。图示实线位置是压入式通风状态。风筒6及3两端均用密闭
Horizontal tunnel excavation, the use of local fans for ventilation, due to the different periods of ventilation requirements, and the need to change the ventilation, that is, the anti-wind. For example, in order to promptly eliminate the harmful gases generated by blasting, it is reasonable to adopt the extraction type ventilation method. However, when tunneling is carried out for transportation, in order to ensure that enough fresh air is supplied to the work surface, it can not be stopped Fan fan running, and press-in ventilation is more reliable and reasonable. My mine ventilation workers, Comrade Wang Qingkui, creatively solved the anti-wind issue of Bureau fans. We will introduce the improved anti-wind installation proposed by Comrade Wang Qingkui as follows (see the attached diagram): The anti-wind installation consists of an iron duct 1, 2, 3, 5, 6, Paragraphs, Canvas Drums 4, and Sealing Caps 7 and 8 made of rubber. The solid line location is press-in ventilation. Both ends of the air tubes 6 and 3 are sealed