无底柱分段崩落采矿法有许多优点,也存在一些重大技术问题,采矿场通风困难就是其中之一。几年来,此问题曾被列为重点攻关项目之一。有关单位做了各种通风方法的试验与研究,其中,以爆堆通风方法的效果较好。。所谓爆堆通风,系指利用无底柱采矿场端部崩落下来的松散矿岩的空隙作为回风孔道,使采矿进路的污风从这些孔道通过,流到上部回风井巷,或直接排到地表去。我国有些矿山曾先后应用过爆堆通风方法来解决采矿进路的通风间题。它们共同的特点是利用上部已采分段的进路口作为爆堆回风口,在抽出式主扇的作用下,新鲜空 There are many advantages to the subsea caving method, and there are some major technical problems. One of them is the difficulty of ventilation in the mining area. In recent years, this issue has been listed as one of the key research projects. Relevant units have done a variety of ventilation methods of testing and research, of which the blasting ventilation method is better. . Blast heap ventilation refers to the use of the void of loose ore crashed at the end of a bottomless pillar mining field as a return air duct so that the dirt from the mining approach passes through these tunnels and flows to the upper return airway or directly To the surface to go. Some mines in our country have successively applied the method of blasting ventilation to solve the problem of ventilation in mining road. Their common feature is the use of the upper section has been taken into the mouth of the mouth as blasting tuyere outlet in the role of the main fan out, the fresh