Titlebook: Seismicity in Mines; Sławomir J. Gibowicz Book 1989 Birkhäuser Verlag Basel 1989 earthquake.environment.geophysics.mining

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978-3-7643-2273-1Birkhäuser Verlag Basel 1989

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Continuous Evaluation of Seismic Hazard Induced by the Deposit Extraction in Selected Coal Mines inzing mining works and the state of rock mass..Assuming that the measure of seismic hazard is the amount of seismic energy released in a given time interval, it is shown how the hazard can be evaluated continuously. The derived relations were tested in selected coal mines in Upper Silesia.

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Analysis of Exceptionally Large Tremors in Two Gold Mining Districts of South Africa,ning districts with different geologic settings, reveals some essential differences in both seismic source and ground motion parameters. In the Klerksdorp district where the strata are offset by major throughgoing normal faults, the largest tremors, with magnitudes ranging as high as 5.2, tend to be

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The Mechanism of Small Mining Tremors from Amplitude Inversion, is proposed. The shapes of theoretical and observed radiation patterns are compared in the least squares norm and the parameters describing the shear-slip together with the ratio of implosive and shear dislocations are optimized. The efficiency of the method, even in the case of a small number of s

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Source Mechanism of a Large Scale Gas Outburst at Sunagawa Coal Mine in Japan,d at a face of a cross-cut, just after a coal seam was outcropped by blasting for drivage of the cross-cut. The site of the gas outburst was located 1,180 m below the surface. No workers were injured, but the cross-cut was plugged with 1,600 m. of coal fragments extending over 100 m behind the face