Experimental Study on Stick-Slip Process of Bending Faults
详细信息
- 责任者：Guo Yanshuang (State key Lab. of Earthquake Dynamics ; Institute of Geology ; China Earthquake Administration ; Beijing 100029 ; China) ; Ma Jin
- 刊名：Seismology and Geology
- 出版年：2011
- 卷期：33(1)
- 关键词：构造模拟实验 ; experiment of tectonic simulation
- 页码：p.26-35
- 图表：7 illus., 21 refs.
- 分类号：0300
- issnNo：ISSN0253-4967
- isbnNo：CN11-2192/P
摘要
The stick-slip process of pre-cut bending faults with a 5°angle at bending point between the two fault segments is investigated by use of fault displacement measurement, strain tensor analysis and acoustic emission (AE) technique in the laboratory. The experimental results from bending faults show that: 1) a negative relationship was revealed between the logarithms of the stick-slip cycle and the logarithms of loading rate; 2) under different loading rate, most of instabilities of bending faults are earthquake doublets, and the interval time between the two sub-events are primarily from 100 ms to 200 ms; 3) for different observational approaches, even if with the same sampling rate,the differences of the coseismic response were observed; and 4) AE sources obviously migrated along faults during fault sliding.