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rock mechanics in narrow vein mining

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A feasibility study on confinement effect on blasting

A feasibility study on confinement effect on blasting performance in narrow vein mining through numerical modelling. we only examined the influence of the confinement of the surrounding rock in narrow vein blasting. The Authors recognize that the issues associated with underbreak or overbreak are complex. Future studies will examine the sensitivity of other potential influencing factors. 6

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Narrow Vein Mining Risk Geotechnical YouTube

17/02/2016· Narrow Vein Mining Risk: Geology Duration: 10 Mine Master underground narrow vein drilling rig Face Master 2.5NVDR Duration: 3:21. Mine Master 3,783 views. 3:21. Finding An Abandoned Gold

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MVM1100 Narrow Vein Mining YouTube

12/07/2013· Mechanised narrow vein mining. Skip navigation Sign in. Search. Loading Close. This video is unavailable. Watch Queue Queue. Hard Rock University 172,213 views. 10:35. Cat® HW300 Highwall

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Narrow Vein Mining Risk: Geology YouTube

17/02/2016· In this short 10 minute webinar, Cath Pitman, AMC Senior Geologist, discusses the importance of understanding the risks associated with the modelling and estimation of narrow veins and what

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The Effect of Stress Damage on Dilution in Narrow Vein Mines

THE EFFECT OF STRESS DAMAGE ON DILUTION IN NARRow VEIN MINES Domain RQD Jn Jr Ja Q’ HWN 97 9 1.0 1.0 10.8 HWC 949 1.0 1.0 10.4 HWS 95 12 1.0 1.0 7.9 HWS1 86 6 1.25 1.0 17.9 HWS2 87 9 1.0 1.0 9.7 FWN 100 12 3.25 1.0 27.1 FWS 100 12 1.25 1.0 10.4 FZ1 100 12 1.25 1.0 10.4 TABLE2 Q System rock mass classification for Barkers geotechnical domains.

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UNDERGROUND MINING METHODS YouTube

10/11/2017· UNDERGROUND MINING METHODS CH-08:ARYABHATT [Mathematics, Physics, Chemistry] Rock Falls -- Preventing Rock Fall Injuries in Underground Duration: 20:23. PublicResourceOrg 47,309 views. 20:23

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Cemented Paste Backfill Geomechanics at a Narrow-Vein

10/06/2019· In deep, narrow-vein mines, large deformations and induced stresses fracture the cemented fill, often damaging the instruments and preventing long-term measurements. Hecla Mining Company and the Spokane Mining Research Division of the National Institute for Occupational Safety and Health (NIOSH) have worked collaboratively for several years to better quantify the

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New Support Concepts for Hard Rock Mining Applications

New Support Concepts for Hard Rock Mining Applications Thomas M. Barczak NIOSH Pittsburgh Research Laboratory Stephen C. Tadolini NIOSH Pittsburgh Research Laboratory. Abstract . A critical safety component for all underground mining is intrinsic and standing support systems. Specifically, tabular hardrock mining exploits a wide variety of deposits that require various methodologies to

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Design and application of an efficient mining method for

Design in narrow vein mining Underground Design Methods 2015, Perth, Australia 297 the hydrogeology condition is low to moderate and does not have a significant effect on underground mining. 2.3 Rock mass quality and maximum exposed area of roof 2.3.1 Rock mass quality evaluation

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Design and application of an efficient mining method for

Design in narrow vein mining Underground Design Methods 2015, Perth, Australia 297 the hydrogeology condition is low to moderate and does not have a significant effect on underground mining. 2.3 Rock mass quality and maximum exposed area of roof 2.3.1 Rock mass quality evaluation

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Development of benchmark stoping widths for longhole

Development of benchmark stoping widths for longhole narrow-vein stoping P. Stewart*1, R. Trueman2 and G. Lyman2 In narrow vein mining it is often not possible to limit stope width to the vein width when utilising blasting for rock breakage. A probabilistic benchmarking method is used to estimate benchmark stability stoping widths and benchmark average stoping width for three commonly used

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(PDF) Narrow vein mine design at the Hoyle Pond mine

Rock mechanics m apping on the vein exposures identifies areas at risk in the stope. At Hoyle Pond, the Geological Strength Index (GSI) approach to assessing rock mass quality has been adopted.

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Equipment Mobile mechanical vein miner; Hecla Mining

Whereas the host rock mass at the Lucky Friday was a brittle and strong siliceous quartzite (the Revett formation), the 30 Vein is located in the weaker and heavily foliated argillite (the Wallace formation) described previously. The 30 Vein is located approximately 1.6 km (1 mile) north of the Lucky Friday Vein. Underhand mining using teleremote

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Costerfield a narrow-vein case study AusIMM Bulletin

The operational challenges of narrow-vein mining include controlling overbreak as the veins being mined are only 300 mm wide. Costerfield has developed methods and modified equipment to suit extraction of these veins. Productivity improvements have involved developing a stoping method and equipment to suit 1.8 m wide development drives. Over the last five years and during a skills shortage

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MECHANISING NARROW VEIN MINING PYBAR

MECHANISING NARROW VEIN MINING April 10, 2017 Development Mining, Exploration Drilling, Production Drilling RIG PROVES ITSELF IN MECHANISING NARROW VEIN MINING. In 2016 PYBAR acquired a number of unique rigs providing a strong competitive edge in the market. One of these new additions, the MUKI Micro Jumbo, successfully completed its first project in October confirming its

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International Journal of Rock Mechanics and Mining

This journal is concerned with original research, new developments, site measurements and case studies in rock mechanics and rock engineering.It provides an international forum for the publication of high quality papers on the subject of rock mechanics and the application of rock mechanics principles and techniques to mining and civil engineering projects built on or in rock masses.

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Feasibility of Narrow Vein Mining Using a Mechanical

The use of explosives in underground mining has its drawbacks, particularly in the case of thin or narrow vein type deposits. Due to that, there is a need to develop more discriminative and safe rock-breaking technologies. Mechanical rock splitting seems to be one of the most promising avenues in this respect. This stone describes briefly...

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International Journal of Rock Mechanics and Mining

International Journal of Rock Mechanics and Mining Sciences. Supports open access. Latest issue Article collections All issues Submit your article. Search in this journal. 3rd North American Rock Mechanics Symposium (NARMS '98) Cancún, Mexico. Edited by Jorge Orozco, Juan Schmitter. Volume 35, Issues 4–5, Pages 389-682 (June–July 1998) Previous vol/issue. Next vol/issue. Actions

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Cat AD22 Underground Truck Caterpillar

Designed for use in narrow vein mining, the Cat® AD22 is a new, smaller size class in the Caterpillar line up of underground hard rock trucks. This Tier 3 equivalent truck has a gross power rating of 325 hp from the proven, reliable Cat C11 ACERT diesel engine.

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