论文部分内容阅读
M.M.普罗托吉雅柯诺夫最早报导了岩石冲击试验方法,他采用2.4公斤的重锤垂直下落635毫米,落在大致标准重量的不规则岩石试样上。这个称之为冲击方法试验旨在得到一个可与常用的普氏系数相比较的强度指标。由此得到了一个实用的大约分为1～20级的岩石强度等级。
M. M. Protogyakkonov first reported the rock impact test method. He used a 2.4 kg weight to drop 635 mm vertically and fall on an approximately standard weight of irregular rock samples. This is called the impact method test to obtain a strength index that can be compared with the commonly used Platts’ coefficient. This results in a practical grade of rock strength of approximately 1-20.