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| 具有多种断层结构岩样的形变和破裂特征的试验研究 | |
| 引用本文： | 胡毅力,许峻,许昭永,陈顺云,张永安,张晓曼.具有多种断层结构岩样的形变和破裂特征的试验研究[J].地震研究,2010,33(3). |
| 作者姓名： | 胡毅力 许峻 许昭永 陈顺云 张永安 张晓曼 |
| 作者单位： | 1. 云南大学地球物理系,昆明,650091 2. 云南省地震局,昆明,650224 3. 昆明理工大学激光研究所,昆明,650041 |
| 摘 要： | 在岩石板上切割出多条切缝并以石膏填充,将其分为3个构造特征区:A区(断层交汇区)、B区(左行左列岩桥区)、C区(右行左列岩桥区)。采用双轴加压、定点应变、声发射信息系统和实时全息干涉计量方法(激光)进行观测研究。结果表明:在岩样破坏孕育过程中,各个特征区都出现了特大破裂。每个特大破裂发生前定点应变、激光干涉条纹图(应变场)和声发射信息都出现了特征变化。特大破裂的发生有先后,其前兆特征的出现也有先后,并且各区有各自的特点,某些前兆还可能在各区之间交替出现。研究认为,三个区的断层结构性质不同,这就导致了不同的破裂顺序,甚至产生不同的前兆现象。 |
| 关 键 词： | 多个切缝岩样 多种断层结构 激光全息计量 定点应变 微破裂信息分析 |
Experimental Study of the Characteristics of Deformation and Fracture of Rock Block with Various Structure of the Fault |
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| HU Yi-li,XU Jun,XU Zhao-yong,CHEN Shun-yun,ZHANG Yong-an,ZHANG Xiao-man.Experimental Study of the Characteristics of Deformation and Fracture of Rock Block with Various Structure of the Fault[J].Journal of Seismological Research,2010,33(3). | |
| Authors: | HU Yi-li XU Jun XU Zhao-yong CHEN Shun-yun ZHANG Yong-an ZHANG Xiao-man |
| Institution: | HU Yi-li1,XU Jun2,XU Zhao-yong2,CHEN Shun-yun2ZHANG Yong-an3,ZHANG Xiao-man2(1.Department of Earth Sciences,Yunnan University,Kunming 650091,Yunnan,China)(2.Earthquake Administration of Yunnan Province,Kunming 650224,China)(3.Laser Institute,Kunming University of Science and Technology,Kunming 650041,China) |
| Abstract: | V-shaped block boundaries consisting of en echelon faults(slots or prefabricated cracks)were cut in a coarse-grained granite board.The slots were filled with gypsum.According to the structural characteristics,the board was divided into three zones:Zone A(where the faults converge),Zone B(where the faults form left-lateral and left-stepping rock bridges),and Zone C(where the faults form right-lateral and left-stepping rock bridges).An observational study was made by means of biaxial loading,fixed-point strai... |
| Keywords: | prefabricated cracks various structure of fault laser holometry rock block strain micro-crack analysis |
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