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Showing: 1 to 10 of 540 matches for "hard rock pillar collapse"  Page   1   2   3   4   5   6   7   8   9  next TITLE A Review ù Pillar Stability Issues at DOZ Block Cave Mine  SUMMARY ... Massive Magnetite: generally hard, competent, with ... throughout the deposit.The rock mass characteristics of ... and factors ultimately lead to pillar collapse: ... AUTHOR D Flint ; O Rindriatmoko PUBLISHED 2005 TITLE Assessment Of Stable And Failed Pillars In Underground Limestone Mines  SUMMARY ... criterion for regional stability.No case of wide area collapse or signs ... ratios of less than 0.8.A review of failed pillar data in hard rock mines (Lunder ... AUTHOR Esterhuizen, G. S. PUBLISHED 2008 TITLE Regional Stability of Underground Mines ù A Core Risk  SUMMARY ... REGIONAL INSTABILITY AS A RISK The history of soft and hard rock underground mining is blemished with regional ... F IG 2 - Collapse of the crown pillar in a ... PUBLISHED 2003 TITLE Toward Pillar Design to Prevent Collapse of Room-and-Pillar Mines  SUMMARY ... collapse with little warning and pose a serious risk to underground miners. Traditional strength-based pillar design methods applicable to coal or hard-rock ... AUTHOR Zipf, R. Karl, Jr. TITLE Outbursts And Rockbursts In Coal Mines  SUMMARY ... Rockbursts usually occur in hard rock mining and are associ- ated with ... characteristic vill be less stiff than the fracturing rock. ... (a) pillar collapse due to ... AUTHOR Farmer, Ian W. PUBLISHED 1988 TITLE A Geotechnical Rationale For The Design Of South African Open Cast Coal Mine Highwalls  SUMMARY ... standard soil slope principles, while the hard rock mass (over ... highwalls—classic soil and rock slope failure ... highwall subsidence due to pillar/bord collapse ... AUTHOR Butcher, R. J. PUBLISHED 2001 TITLE The Design Of Pillar Systems As Practised In Shallow Hard-Rock Tabular Mines In South Africa  SUMMARY ... and the full weight of the rock on the overburden may be involved in a potential collapse. ... Pillar systems as practised in shallow hard-rock tabular mines in ... AUTHOR Ozbay, M. U. ; Ryder, J. A. ; Jager, A. J. PUBLISHED 1995 TITLE Best Practices To Mitigate Injuries And Fatalities From Rock Falls - Introduction  SUMMARY ... Hard rock bursts have been occurring in deep metal mines ... to reduce the occurrence of rock bursts through ... A pillar collapse is a sudden, violent event that can ... AUTHOR Mark, Christopher, PH.D. ; Iannacchione, Anthony T., PH.D. TITLE Pillar Stability Issues Based On A Survey Of Pillar Performance In Underground Limestone Mines  SUMMARY ... It is not known whether the roof failure was simultaneous with the pillar collapse or not. ... Hard Rock Pillar Strength Estimation an Applied Approach. MASc. ... AUTHOR Esterhuizen, Gabriel S. ; Iannacchione, Anthony T. ; Ellenberger, John L. ; Dolinar, Dennis R. TITLE Pillar Stability Issues Based on a Survey of Pillar Performance in Underground Limestone Mines  SUMMARY ... It is not known whether the roof failure was simultaneous with the pillar collapse or not. ... Hard Rock Pillar Strength Estimation an Applied Approach. MASc. ... AUTHOR Esterhuizen, Gabriel S. PUBLISHED 2006 Showing: 1 to 10 of 540 matches for "hard rock pillar collapse"  Page   1   2   3   4   5   6   7   8   9  next Search Again