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(一)前言为了研究爆破、凿岩、地震等动应力场下岩石的破坏状态,首先要对岩石受冲击载荷时的强度和变形特征进行研究。在大多数情况下,岩石是处于四周受压的状态,所以在室内进行封压条件下的实验研究是非常必要的。本研究是采用霍甫金松高速冲击试验法试制了封压条件下的岩石冲击试验机,在三轴应力条件下对岩石进行高速压缩破坏试验研究。到目前为止,已有许多研究者对岩石进行过各种方法的冲击试验,其共同特点是:测定冲击载荷下岩石内部的粒子运动,即应力波。因此,在岩石变形的整个过程中如何正确地测量就成为一个重要的问题。众所周知,霍甫金松法的特征是在圆柱试件的前后,分别装上弹性棒,若冲击其中
(I) Preface In order to study the rock failure state under dynamic stress field such as blasting, rock drilling and earthquake, we must first study the strength and deformation characteristics of the rock under impact load. In most cases, the rock is in a state of being compressed all around, so it is very necessary to conduct experimental research under the conditions of sealing in the room. In this study, Huo Jin Jinsong high-speed impact test method to test the rock pressure impact test machine under the conditions of pressure, rock under high-speed three-axis stress failure test. So far, many researchers have carried out various methods of rock impact tests, which have the following characteristics in common: they measure the particle motion inside the rock under the impact load, that is, the stress wave. Therefore, how to measure correctly during the whole rock deformation becomes an important issue. As we all know, Huo Fu Jinsong method is characterized by cylindrical specimens before and after, were fitted with elastic rods, if the impact of which