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(一)引言在对岩石变形全过程力学性质的研究中,碰到的最大困难是荷载的施加或变形状态的实现.为此,研究者在技术上花了不少功夫,初期是在普通试验机上附加刚性元件,其后是研制大刚度的试验机,以及使用电液伺服控制系统.尽管工作进展很大,但目前不论在对实验技术的评价方面或对实验结果的认识方面,尚存许多不同的看法:有人强调试验机的刚度影响了
(I) INTRODUCTION In the study of the mechanical properties during the whole process of rock deformation, the greatest difficulty encountered is the implementation of the loading or deformation of the load. For this reason, the researchers spent a lot of time on the technique, and the initial stage was in the ordinary test. Additional rigid components were added to the machine, followed by the development of large stiffness testing machines and the use of electro-hydraulic servo control systems. Despite the great progress, no matter what the evaluation of experimental techniques or the understanding of experimental results, there are still many Different views: It was emphasized that the stiffness of the testing machine affected