近年来,对采矿生产中的一项技术关键——穿孔爆破,进行了大规模的技术改造。潜孔钻、牙轮钻在许多露天矿山正在有计划地逐步取代“磕头钻”;井下深孔采矿和天井掘进也已广泛使用潜孔钻。在生产发展的新形势下,提出了许多需要解决的新课题,其中之一就是如何根据我国矿山主要岩石的特性,合理设计并正确选用高效率钻具,而岩石的可钻(凿)性 In recent years, a large-scale technological transformation has been carried out for a key technology in mining production, perforated blasting. Downhole drills and cone drills are gradually replacing “tap-drilling” in many open-pit mines; down-hole drilling and well drilling have also been widely used. In the new situation of production development, many new issues that need to be solved are proposed. One of them is how to reasonably design and correctly select high-efficiency drilling tools according to the characteristics of the major rocks in China’s mines, and the rock can be drilled (chiseled).