Modeling Induced Ground Motion as a Seismic Design Structural Load

Abstract eng:
Seismicity induced by deep mining is typically characterized by quakes with local magnitude ranging from 4.5 to 5.5 and surface ground motion with Modified Mercalli intensities up to VIII. Such strong ground motions may result with serious damages in civil infrastructures. However, any attempt to adapt the classic seismic design codes in order to account for mine tremors faces the differences in terms of spectral content and duration of the surface records of related to rockbursts with respect to the recordings typical of natural earthquakes and in their different risk definitions. The aim of this paper is to illustrate a methodology set-up to define design seismic load based on forecasted surface horizontal ground velocity from the rockbursts expected during the planned mining activities. Such forecasts are routinely prepared by the geophysical mine services. Respective seismic load may then be applied in the design of buildings and other structures to mitigate the rockburst induced seismic effects on them. For this purpose, the European seismic code, Eurocode 8 has been adapted.

• Export as: BibTeX | MARC | MARCXML | DC | EndNote | NLM | RefWorks
• Add to your basket