Reconstruction of the acceleration field of ground vibrations taking into account the directivity of vibrations’ propagation
Abstract
Many times, commonly used attenuation relations do not allow to obtain a sufficiently practicable accuracy of the results’ description of the observations. This may be an evidence of the attenuation directional nature of ground vibrations caused by tremors. In such cases, using the attenuation relationship that takes into account the directivity of the propagation of vibrations may allow to increase the accuracy of the reconstruction of ground vibrations accelerations. In the article there are presented the reconstruction’s results of recorded accelerations of ground vibrations caused by mine tremors, occurring in the area of one of the Polish mine. In all cases, the directivity of vibrations propagation was observed. The results of the calculations show that the direction of lower surface vibrations attenuation is parallel to the direction of the tectonic fault adjacent to the epicentre of the tremor inducing these vibrations.
- Publication:
-
IOP Conference Series: Earth and Environmental Science
- Pub Date:
- November 2018
- DOI:
- 10.1088/1755-1315/198/1/012002
- Bibcode:
- 2018E&ES..198a2002B