目前冲击破碎的两种研究方法即直射波与反射波法和示功图法得到了广泛的推广。但这两种方法均具有一系列特有的误差,因此在提出和整理试验结果时必须加以考虑。这些误差的来源目前尚不甚了解,本文拟作某些探讨。直射波与反射波法通常用于研究钎头与被碎体冲击相互作用的过程,并得到了以下 At present, two research methods of impact crushing, that is, direct and reflected wave method and dynamometer method, have been widely popularized. However, both of these methods have a series of peculiarities of errors and must therefore be considered when presenting and collating the test results. The source of these errors is not yet understood, this paper to make some discussion. The direct wave and reflected wave method are usually used to study the impact interaction between the bit and the ground object. The following equations