瓦斯爆炸严重威胁着我国煤炭工业的健康、持续发展。虽然国内外在瓦斯爆炸防治方面的研究已经有了较大的成果，但是目前涉及到在瓦斯爆炸三要素同时具备情况下控制矿井瓦斯混合气体不发生爆炸的新技术的研究还较少，而实现这种技术的首要问题就是要找到能够有效抑制瓦斯爆炸，并且经济环保的控爆材料。因此，寻找到一些合适的控爆材料，开发出相应的控爆技术，对于有效的控制瓦斯爆炸灾害，保障煤矿安全生产具有十分重要的意义。 本文利用超细水雾吸热效率高，阻隔辐射热作用强的特点，通过添加具有抑制自由基作用的NaHCO3、NaCl、KCl等化合物形成瓦斯爆炸水系抑制剂，运用自行搭建的小型爆炸实验台和高速摄影机，对CH4体积百分浓度约为9.5％的烷空混合气分别在超细清水雾以及超细NaHCO3、NaCl、KCl水雾气氛中的爆炸过程进行了系列实验，通过分析这几种超细水雾对瓦斯爆炸火焰的传播过程及爆炸感应期的影响，表明，在超细水雾气氛下，瓦斯的爆炸感应期明显延长，火焰在实验管道中传播的平均速率和最大速率显著降低，由于超细水雾对爆炸能量的损耗，使得火焰传播能量降低，火焰在实验管道中传播时还出现了火焰驻停现象，这表明超细水雾对瓦斯的爆炸传播过程具有一定的控制作用。最后得出，含有NaHCO3、NaCl、KCl的超细水雾对瓦斯爆炸的控制效果要优于超细清水雾的控爆效果，其中又以氯化钾超细水雾的控爆效果为最强。 利用超细水雾进行瓦斯爆炸控制实验的成功为进一步开发瓦斯爆炸水系抑制剂提供了重要的参考。

The healthy and sustainable development of coal industry is badly menaced by gas explosion one of the nature factors that influence industrial security in mine all the while. Many achievements on gas explosion controlling have been got at domestic and foreign, but there are only a few researches on the technique that can completely stop the gas explosion whether all three-explosion elements have been in existence at the same time. The first question we should face during the process of carrying out this technique is to find out some controlling material which can control gas explosion availably and is economical and environmental. So it is important to find out those materials and carry out the new technique. Superfine spray is used as the main body of water-depressant for its characteristic such as high decalescence-efficiency and strong effect of obstructing radiant heat. NaHCO3, NaCl and KCl are used as additive of water-depressant. Then based on the small-sized experimental installation, the experiment of gas explosion under superfine spray is done. Approximate 9.5% volume concentration of CH4 is used as gas, and fresh water, NaHCO3 solution, NaCl solution and KCl solution are turned to fog during experiment. The influence of superfine spray on flame propagation and induction period during gas explosion is opened out through analyzing the experiment result. It indicates that induction period of gas explosion is prolonged; the average and maximum rate of flame propagation are both reduced evidently after superfine spray being mixed with the gas. Moreover, flame residence arises for superfine spray weakening the energy of flame propagation. It shows that superfine spray can control propagation of gas explosion in a certain extent. And the superfine spray that is made from NaHCO3 solution, NaCl solution and KCl solution is better than fresh water in controlling gas explosion. The result of this experiment can be tooken as important reference during exploiting the water-depressant for controlling gas explosion.