By S.N. Glazer
This publication deals an in-depth research and interpretation equipment appropriate to mine-induced seismicity. it's in response to over forty years of expertise in mine and exploration geophysics. one other exact characteristic of this publication is the full background of the caving technique as evidenced via the recorded seismicity on the South African copper mine Palabora elevate 1. previously, the literature has purely awarded conception and case experiences discussing the translation of effects, and there was no dialogue of the input-data caliber or why a undeniable interpretation strategy was once utilized. This booklet fills that gap.
This booklet is an interesting learn, written via one of many world’s major mine seismologists. It summarises the background and development of mine seismology. It outlines the sensible use of again research of information and the way it may be used every day. The booklet explains how mine seismology can be utilized as a good tracking instrument for key occasions because the mine progresses in addition to for destiny caving operations.Anthony Allman MAusIMM, CP(Min), RPEQ Antcia Consulting Pty Ltd, Director, Mining Engineer
The content material of the booklet is admittedly strong and powerful and i've without doubt will probably be thought of a good contribution for the mining community.Raul Fuentes, Former Director of grasp software in Geomechanics utilized to Mining, Universidad de los Andes, Santiago, Chile
This booklet is lengthy past due and is helping to offer a few tricky techniques in a manner that they are often in actual fact understood via non-experts during this zone. Stefan has for my part controlled to take mine seismology from being a black-art right into a great tool to assist make mines a more secure and extra managed setting. Neil Hepworth C. Eng, MIMMM, Geomin Consultorio – Brazil, advisor Mining and Geotechnics
Seismic tracking is a vital device in cave administration. the knowledge from tracking permits a couple of key construction elements to be decided together with cave develop premiums, the approximate position of the cave again, perception into the scale of the air hole and permits the monitoring of wide alterations in rigidity. those all help in the day after day administration of a secure and profitable cave. Dr. Glazer’s publication presents counsel at the program of microseismicity to cave administration via a evaluation of applicable concept and extra importantly illustrates its use via case histories, fairly from the Palabora block cave. The textual content could be a very good addition for all practitioners in cave engineering and operations.Allan Moss, normal supervisor – Grasberg Underground Liaison, Copper improvement, Rio Tinto
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Extra resources for Mine Seismology: Data Analysis and Interpretation: Palabora Mine Caving Process as Revealed by Induced Seismicity
2 illustrates the fact that the location of the seismic event changes with the number of accepted seismic stations during processing of the event.
I joined this network in 1982 and was then responsible for its management until 2000. KMMA stands for Klerksdorp Mine Managers Association. With time, seismology was introduced to the mines and it was found that there was a lot of similarity between the large earthquakes and the smaller size seismic events recorded in mines. Spectral analysis has become a standard technique used to estimate the source parameters of seismic events recorded by mine digital seismic networks. Simple source models of circular dislocations are used for the interpretation of seismic spectra and for the purpose of deriving source parameters.
1. The distribution of seismic energy released per hour does not correlate with the number of events per hour. This is illustrated by Fig. 2. No of events per hour 700 600 500 400 300 200 100 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Fig. 0E+00 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Fig. 2 Distribution or seismic energy release While the peak number of events per hour correlates directly with the blasting time, the peak amount of energy released per hour comes 7 h later, between 22h00 and 23h00.