gold mining seismicity

Earthquakes and related geohazards in Africa 2 - YouTube

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Feb 20, 2018 · In 1915 and 1932 earthquakes of 6.8 magnitude occurred in the central Mozambique Channel and off Cape St Lucia in KwaZulu-Natal. Africa cannot afford a false sense of security about the maximum ...

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Is Shale Gas a Sustainable Source of Energy?

Image credits: Ferriz Frames/shutterstock. The United States of America have pioneered the Shale Gas Revolution increasing production from 23 billion cubic meters (bcm) to 385 bcm by 2015.

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Denver Gold Forum - s1.q4cdn

forward in January of 2019; and the risks involved in the exploration, development and mining business. The Company is also subject to litigation and legal and political risks. With respect to development projects, IAMGOLD's ability to sustain or increase its present levels of gold production is dependent in part on the success of its projects.

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an investigation to assess the risks to miners, mines and the public arising from seismicity in mining areas, with particular reference to gold mines, remnant mining, pillar mining and mining districts in which mines are largely mined out or where flooding is occurring.

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Mining seismicity in the Wasatch Plateau and Book Cliffs coal mining districts, Utah, USA 111 W.JArabasz, SJ.Nava & WT.Phelps Monitoring seismicity in some mining camps of Ontario and Quebec 117 STalebi, P.Mottahed & CJ.Pritchard Seismic monitoring of ground caving processes associated with longwall mining of coal 121

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Seismicity in Deep Gold Mines of South Africa ...

Seismicity in Deep Gold Mines of South Africa: Implications for Tectonic Earthquakes 1767 16˚ 24˚ 32˚-32˚-24˚ Johannesburg South Africa 27˚ 28˚-27˚-26˚ Johannesburg Deelkraal Western Deep Levels Elandsrand Figure 1. Southern Africa (top) and Far West Rand mining district, Republic of .

  • Published in: Bulletin of the Seismological Society of America · 2002Authors: Eliza Richardson · Thomas H JordanAbout: Gold mining · Underground miningGet Price

Modeling the effects of wastewater injection

The north pole is moving and if it flips, life on. NASA satellite's infrared eye analyzes typhoon lingling. Research finds gigantic masses in Earth's mantle untouched

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Mining induced seismicity - QueensMineDesignWiki

Controlling stresses in the rock effectively will minimize seismicity, by way of induced stresses from mining activity driving seismicity, as well as open voids. By controlling the progression of excavations, the evolution of stresses mine can be controlled, in order to reduce seismicity and mitigate damages [1] .

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And the Resulting Seismic Hazard - Seismicity of the ...

A seismic event with a local magnitude of ML = 5.3 occurred at 12:15 on 9 March 2005 at DRDGOLD's NorthWest Operations in the Klerksdorp district. In response, the Chief Inspector of Mines initiated an investigation into the risks to miners, mines, and the public arising from seismicity in gold-mining .

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ACG celebrates 25 years of mining geomechanics excellence

• Mine Seismicity and Rockburst Risk Management Research Project and mXrap Consortium • Strainburst Research Project • An Effective Stress Approach to Mine Backfill . Industry has sought ACG advice and assistance on projects from the backfill mines of China to the deep mines of Australia, Canada and South Africa.

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Mining seismicity in the Witwatersrand Basin: monitoring ...

Mining seismicity in the Witwatersrand Basin: monitoring, mechanisms and mitigation strategies in perspective K. L. Riemer1, R. J. Durrheim2 1 Gold Fields, Gauteng South Africa 2 University of the Witwatersrand & CSIR Centre for Mining Innovation, Gauteng South Africa Received 21 May 2012; received in revised form 10 June 2012; accepted 15 ...

  • Published in: Journal of rock mechanics and geotechnical engineering · 2012Authors: K L Riemer · R J DurrheimAffiliation: University of the WitwatersrandAbout: Gold mining · Induced seismicity[PDF]Get Price

Mine Seismology: Seismic Warning Concept - Case Study from ...

Eric Strom, Director Underground Mining, New Gold Inc. As a mining geotechnical practitioner having experience in large open pit and underground massive mining operations, I have learned that mining induced seismicity can have a significant impact on the safety and economics of operations.

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'Will I come back dead?' Human costs of South African gold ...

Sep 10, 2018 · (Bloomberg) — After more than two decades of improving mine safety since the end of apartheid, South Africa's progress has stalled with an increase in gold-mining .

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Seismicity in Mines : G. Gibowicz : 9783764322731

Panel discussion.- Analysis of exceptionally large tremors in two gold mining districts of South Africa.- The mechanism of small mining tremors from amplitude inversion.- Source mechanism of a large scale gas outburst at Sunagawa coal mine in Japan.- Mining-related and tectonic seismicity in the East Mountain area, Wasatch Plateau, Utah, U.S.A..-

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Seismicity in mines (Book, 1989) [WorldCat]

Fred Leighton Memorial Workshop on Mining Induced Seismicity, August 30,1987 : editorial, papers presented at the workshop, panel discussion / R.P. Young --Analysis of exceptionally large tremors in two gold mining districts of South Afirca / A. McGarr [and others] ...

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Kanowna Belle ‒ evolution of seismicity with increasing ...

Seismicity was starting to occur and by May 2000 a seismic system had been commissioned. Since then, seismicity has played an increasing role in risk ... The Kanowna Belle Gold Mine, Figure 1, is located 18 km NE of Kalgoorlie and 2 km west of the historic gold mining centre of .

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Big Bell Gold Mine - Wikipedia

The Big Bell Gold Mine is a gold mine located at Big Bell, 24 km north-west of Cue, Western Australia. The mine was owned and operated by Harmony Gold at the time of its closure in June 2003, having produced 2.6 million ounces of gold during its lifetime, but .

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Seismology Jobs : Earthworks : PhD proposal - Seismic and ...

Mining induced seismicity generally appears in form of spatio-temporal clusters in the vicinity of the newly excavated volumes. It results from fracturing of the rock-mass and/or shearing on pre-existing fractures. These processes are widely related to the frictional behavior of the rock-mass. When the amount of released elastic energy is ...

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An Engineering Approach to Seismic Risk Management in ...

Nov 21, 2009 · The problem of mining-induced seismicity in hardrock mines has become significant as underground mines from around the world are pushing production to deeper levels. At many mines, the risk associated with large seismic events and rockburst damage must be managed to ensure the safety of mine workers and minimise production losses.

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Seismicity Induced by Mining: Recent Research - ScienceDirect

Seismicity induced by mining is commonly described as the occurrence of earthquakes caused by rock failures, a result of stress changes in the rock mass near mining excavations. Mining-induced events are caused by increases in the shear stress or decreases in the normal stress acting on the fault planes.

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Stabilizing and bracket pillar design to reduce seismicity

Gold Mine. A portable seismic system (PSS) was installed on Kloof Gold Mine to monitor the seismicity associated with the continued formation of a strike stabilizing pillar at a depth of 3035 m (see Figure 3). Seismic events were recorded over a period of three years after which the system was Stabilizing and bracket pillar design to reduce ...

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Pillar behaviour and seismicity in platinum mines

similar to observed seismicity for deep-level gold mines, where seismicity takes place mostly on advancing faces. The less brittle seam material of the Merensky Reef, compared to the brittle quartzites and lavas of the Witwatersrand reefs, results in little or no face bursting and is modelled

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Seismicity in Mines (eBook, 1989) [WorldCat]

Several of the benchmark studies of mine seismicity in the deep South African gold mines have resulted in the belief that no fundamental distinction in the source mechanism exists between tectonic earthquakes and rock bursts (MCGARR, 1984); both types of events are the result of pure shear failure.

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Health and Safety Hazards : Mining Health, Safety and ...

Apr 15, 2015 · Underground mining, by its nature, presents a range of health and safety hazards that are different from those in other sectors. Some hazards, such as ground instability, are inherent in the underground environment.

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Congo Gold Mine Innovates to Solve Illegal Mining Dilemma ...

When he led a buyout of AngloGold's 86 percent stake in the Mongbwalu Gold Mine (MGM) last year, Lukama knew he couldn't chase them away if he was to succeed in mining any of the 2.5 million ...

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Managing seismicity at the Tasmania Mine

Managing seismicity at the Tasmania Mine P. B. Hills* Mining induced seismicity was anticipated at the Tasmania Mine (formerly the Beaconsfield Gold Mine) before the commencement of modern production in 1999. Consideration of available stress measurement data from throughout Tasmania, coupled with rock material property data gathered

  • Published in: Mining Technology · 2012Authors: P B HillsAffiliation: University of PittsburghGet Price

Underground Block Caving: A Guide for Investors | INN

Underground Block Caving: A Guide for Investors. ... Dam copper-gold mine in Australia and Mount Keith nickel project, also in Australia ... an area is a good site for a block-caving operation is ...

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A death in the family: Sarah (Andrews) Brown | e-Magazine ...

Sarah (Andrews) Brown, petroleum geologist and author of the Em Hansen mystery series, passed away in a private plane crash along with her husband, Damon, and their son Duncan on 24 July 2019.

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Rock on - MIning Decisions

The first signs of mining-induced seismicity was discovered in the early 1900s when gold mining stopes had reached depths of several hundred metres. It was déjà vu in the 1990s for platinum mining when the initial opencast operations reached a depth of 1 km.

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Quebec City, CANADA, Laval, Canada. The Risks to Miners ...

mining near geological features that could host large seismic events, any further mining adjacent to the structure must be carefully planned. The Klerksdorp and Free State gold mining districts are incorporating the risks of seismicity in their disaster management plans, and Johannesburg is urged to do likewise. Some

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