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用热力气流穿凿深孔与浅孔的热力方法,在采矿工业中获得越来越广泛的应用。用于穿凿坚硬矿岩的热力钻机的喷气燃烧器一般采用气体氧作为液体燃料的氧化剂。这将造成下列不利因素:如成本高、有爆炸危险、必须建设氧气站等。哈尔科夫航空学院从1955年以来所进行的试验研究表明:当热力喷枪使用压缩空气代替氧气作为氧化剂时,亦能以相当大的速度破碎无矿石英岩、花崗岩及与其相类似的岩石。为了在硬岩中穿凿浅孔,以及不使用爆
The thermal method of drilling deep holes and shallow holes with thermal airflow is gaining more and more widespread use in the mining industry. Jet burners for thermal drilling rigs that drill hard rock deposits typically use gaseous oxygen as the oxidizer for liquid fuels. This will result in the following unfavorable factors: If the cost is high, there is an explosion risk and oxygen stations must be built. Experimental studies conducted by Kharkiv Aviation Academy since 1955 show that when the thermal spray gun uses compressed air instead of oxygen as the oxidant, it can also crush ore-free quartzite, granite and similar rocks at a relatively large rate. To drill shallow holes in hard rock, and not to use explosives