Wyniki wyszukiwania - BazTech

Ograniczanie wyników

Znaleziono wyników: 2

Liczba wyników na stronie

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: mining-induced tremors

Sortuj według:

Ogranicz wyniki do:

The effect of selected rockburst prevention measures on seismic activity - case study from the Rudna copper mine

Fuławka K., Pytel W., Mertuszka P.

Journal of Sustainable Mining

2018

Vol. 17, iss. 1

1--10

In order to face threats from mining tremors a number of organizational and technical prevention methods are applied in underground mines. Unfortunately, most of these methods are based on the experience of crew and there is uncertainty whether in practice all of the executed operations are suitable and necessary in the given conditions. Analysis were performed for one of the mining districts of the Rudna copper mine, Poland. In this paper, selected methods of rockburst prevention in the G-4/8 district are described and the recorded seismicity is analysed. On the basis of the data provided by the personnel of the mine, maps of mining progress were generated. This permitted the mined out areas as well as backfilled excavations to be calculated as a function of time. The results were presented in quarterly periods. Furthermore, the seismicity recorded was correlated with the rate of mining progress, the rate of mined out zones and the active rockburst prevention effectiveness. Finally, it was concluded that correlation between the opening area and energy of seismic events may be observed under the mining panel conditions considered. A similar conclusion applied as regards the quarterly speed of mining and the frequency of event occurrence.

Błędy i nieporozumienia w prognozie maksymalnych przyspieszeń od wstrząsów górniczych w rejonie wpływu eksploatacji

Kornowski J., Kurzeja J.

WUG : bezpieczeństwo pracy i ochrona środowiska w górnictwie

2006

nr 6

27-29

Przedstawiamy krótki przegląd zagadnień związanych z błędami prognozy maksymalnych przyspieszeń a max) od wstrząsów górniczych w obszarze objętym wpływami eksploatacji. Badania nasze sugerują, że oprócz znanych czynników wpływających na jakość prognoz, także zmienność ośrodka - właśnie pod wpływem eksploatacji - powoduje, że relacje tłumienia stają się lokalne nie tylko w przestrzeni ale i w czasie.

This is a review of problems with determining prediction uncertainty of the so called maximum acceleration from mining-induced tremors in the area influenced by mining. Large set of observations from the "Miechowice" station is used to illustrate some thesis and problems. With this example we have to conclude that an attenuation not only is a local-in-space description of attenuation but in the mining-influenced area it may also change in time.