介绍了“三小”爆破技术在石台煤矿多个工作面巷道和工作面的试验情况，并进 行了效益分析，认为“三小”爆破技术在“三软”煤层、复合顶板煤层和再生顶板煤层中应用效果 较好，可提高掘进效率１０％～１５％，尤其在煤层含夹矸的回采工作面效果更好。 This paper introduces the experiment of “three small” blasting technology in the roadway and working face of multiple faces in Shitai coal mine, and carries out the benefit analysis. It is concluded that the “three small” blasting technologies are applied in the “three soft” coal seam, the compound roof coal seam and the regenerated roof The application effect of the coal seam is better, which can improve the tunneling efficiency by 10% ~ 15%, especially in the coal mining face with coal gangue.