Mining-associated Seismicity in Kolar Gold Mines: Some Case Studies using Multi-fractals

Karekal, S., Rao, M. V. M. S and Chinnappa, S. (2005). Mining-associated Seismicity in Kolar Gold Mines: Some Case Studies using Multi-fractals. In: Potvin Yves and Hudyma Martin, Proceedings of the Sixth International Symposium on rockburst and seismicity in mines: Controlling Seismic Risk. Sixth International Symposium on rockburst and seismicity in mines: Controlling Seismic Risk, Perth, Western Australia, (635-640). 9-11 March 2005.

Author Karekal, S.
Rao, M. V. M. S
Chinnappa, S.
Title of paper Mining-associated Seismicity in Kolar Gold Mines: Some Case Studies using Multi-fractals
Conference name Sixth International Symposium on rockburst and seismicity in mines: Controlling Seismic Risk
Conference location Perth, Western Australia
Conference dates 9-11 March 2005
Proceedings title Proceedings of the Sixth International Symposium on rockburst and seismicity in mines: Controlling Seismic Risk
Place of Publication Nedlands, W.A.
Publisher Australian Centre for Geomechanics
Publication Year 2005
Year available 2005
Sub-type Fully published paper
ISBN 0975675613
Editor Potvin Yves
Hudyma Martin
Start page 635
End page 640
Total pages 6
Collection year 2005
Language eng
Abstract/Summary The occurrence of rockbursts was quite common during active mining periods in the Champion reef mines of Kolar gold fields, India. Among the major rockbursts, the ‘area-rockbursts’ were unique both in regard to their spatio-temporal distribution and the extent of damage caused to the mine workings. A detailed study of the spatial clustering of 3 major area-rockbursts (ARB) was carried out using a multi-fractal technique involving generalized correlation integral functions. The spatial distribution analysis of all 3 area-rockbursts showed that they are heterogeneous. The degree of heterogeneity (D2 – D∞) in the cases of ARB-I, II and III were found to be 0.52, 0.37 and 0.41 respectively. These differences in fractal structure indicate that the ARBs of the present study were fully controlled by different heterogeneous stress fields associated with different mining and geological conditions. The present study clearly showed the advantages of the application of multi-fractals to seismic data and to characterise, analyse and examine the area-rockbursts and their causative factors in the Kolar gold mines.
Subjects E1
290704 Geomechanics
650202 Coal
Q-Index Code E1

 
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Created: Thu, 23 Aug 2007, 21:30:37 EST