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介绍了一种新型的实验地震学光学模拟系统。它将实时全息技术与声发射源测定技术相结合应用于实验地震学研究 ,前者检测和记录试件内应力场及其变化 ,后者检测和记录微破裂所激发的超声波 ,借以确定试件内微破裂发生的时间、位置和强度。综合两种方法所获数据 ,从微破裂丛集成核过程与应力场之间的关系来寻求破裂形成、扩展的某些规律性。试验观察到一些极有研究价值的现象 ,特别是系统能将破裂的形成和扩展 ,从微破裂丛集成核直至整个试件碎裂的过程 ,以较高的分辨率记录下来 ,初步获得微破裂成核过程与应力场关系的某些规律性。
A new type of experimental seismological optical simulation system is introduced. It real-time holography technology and acoustic emission source detection techniques used in experimental seismology research, the former detection and recording of stress and its changes in the specimen, the latter detection and recording of micro-bursts of the ultrasonic excitation, in order to determine the specimen Time, location and intensity of micro-rupture. Based on the data obtained from the two methods, some regularities of the formation and propagation of rupture are sought from the relationship between micro-rupture cluster nucleation process and stress field. Some phenomena of great research value have been observed in the experiment. In particular, the system can record the formation and propagation of cracks from the nucleation of micro-cracks to the fragmentation of the entire specimen with a higher resolution and obtain preliminary micro-cracks Some Regularities of Relationship Between Nucleation Process and Stress Field.