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11 Years of the underground seismic network in the OKR
Kalenda, P. ; Holub, Karel
In 1988 the underground digital seismological network in the OKR was put in trial operation and since 1989 it has been in a routine operation. In the paper all changes in data interpretation approaches applied during its 11 years existence and futher possibilities in operation improvement of this monitoring system are discussed.
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Diagnostics of prevention effectiveness againts the rockbursts
Holub, Karel ; Stodulková, S.
As a part of the rockbursts preventative measures in mines in the Ostrava-Karviná Coal Basin, large scale torpedo blasting are carried out. Their efficiency evaluated according to the empirical formula diagnoses the successfulness of the performed prevention, the size of which is expressed as the ratio between the inner energy of the charge of explosives and the energy of the provoked seimic event.
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