- 责任者：Yang Jianhu (State Key Laboratory of Water Resources and Hydropower Engineering Science ; Wuhan University ; Wuhan 430072 ; China) ; Lu Wenbo
- 刊名：Acta Seismologica Sinica
- 出版年：2012
- 卷期：34(5)
- 关键词：诱发地震 ; induced earthquakes ; 震源机制 ; focal mechanism ; 微震 ; microearthquakes
- 页码：p.581-592
- 图表：6 illus., 1 table, 27 refs.
- 分类号：0500
- issnNo：ISSN0253-3782
- isbnNo：CN11-2021/P
The mechanism of triggered microseism by excavation of deep rock mass is discussed from the view of energy release. The results reveal that the elastic strain energy release of rocks, accompanied with the formation of new free surface during the rock fragmentation by blasting, is a transient process; and in highly stressed rock mass, the triggered microseism by blasting excavation isattributed to the coupling of blasting load and transient release of in-slru stress （TRIS）. The results indicate that lower frequency component in the coupled microseism results more from TRIS than from blasting load, and higher frequency component originates from the blasting load alone. The coupled microseismic signals are separated by employing the finite impulse response （FIR） filter, and separated waves agree very well with numerical simulation results.