underground mine closure

underground mine closure

Underground Mine Closure - 911 Metallurgist

2016-12-15 · Underground Mine Closure. As with ore mining operations it is necessary to leave an underground mine in a socially responsible state when mining ceases because underground mining has a smaller foot print in surface mining this is generally a less onerous task. However, there are still a number of important issues that must be dealt with and ...

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Towards sustainability in underground coal mine closure ...

2016-12-15 · Finally, we must note that this methodological proposal can also be applied to any alternative mine closure context (open-pit mines, underground metal mines, etc.) according to different environmental risk factors that should be considered and various numerical tools that may be applied in some cases.

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Disposal in underground mine (during mine closure) –

During mine closure backfilling is conducted to increase the mine workings’ structural stability and to decrease the environmental impacts of the waste by limiting oxidation. This is an especially relevant consideration if the waste is sulphur rich, as underground disposal can efficiently limit acid generation and metals release (Masniyom 2009).

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Lessons Learned on Open Pit and Underground Mine

2020-8-24 · Underground Mine Closure Insights from Germany 12/6/2019 Lima, 4 December 2019. Lessons Learned on Open Pit and Underground Mine Closure Insights from Germany Dr. Michael Haschke / Rüdiger Durchholz Am TÜV 1 45307 Essen, Germany email: ruediger.durchholz@dmt-group. Earth. Insight. Values.

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BAT-COMPATIBLE CLOSURES OF ABANDONED

2017-10-30 · abandoned mine sites is therefore a potential threat to bat populations. Where abandoned underground mines slated for closure provide significant habitat, bat-compatible closures can be designed and constructed to meet closure objectives while preserving the valuable wildlife habitat these mines provide.

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Mine flooding – Mine Closure

Mine flooding. Samrit Luoma 1 & Kaisa Turunen 2, 1 Geological Survey of Finland, P.O. 96, FI-02151 Espoo, FINLAND, 2 Geological Survey of Finland, P.O. Box 1237, FI-70211 Kuopio, FINLAND, e-mail: samrit.luoma(at)gtk.fi, kaisa.turunen(at)gtk.fi. Introduction. During mining operation, the precipitation and infiltrating groundwater will be pumped out from the mine pits

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Understanding mine closure and environmental risks ...

2014-2-12 · Beale called underground mines in lowland terrain the easiest to manage for closure, while underground mines in elevated terrain are the most difficult.

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MINE CLOSURE – Checklist for Governments

2021-10-5 · of a successful mine closure governance framework based on leading international guidelines and standards, as well as international experience. This Checklist is designed to provide a logical, sequential series of steps that will allow policy makers to identify gaps in their current mine closure framework and identify how to address those gaps.

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Rehabilitation and Mine Closure - South32

2019-7-25 · activities is planned until mine closure activities commence. The Dendrobium Mine has approved SMPs for each of the active and completed underground mining areas (Areas 1, 2, 3A and 3B), which describe the ongoing program of subsidence monitoring and management at the Dendrobium Mine (Section 2.2.6). Wilton Spray Irrigation

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(PDF) MINE CLOSURE AND POST-MINING MANAGEMENT ...

2022-1-4 · mine closure and post-mining management international state-of-the-art international commission on mine closure international society for rock mechanics November 2008 DOI: 10.13140/2.1.3267.8407

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Lessons Learned on Open Pit and Underground Mine

2020-8-24 · Underground Mine Closure Insights from Germany 12/6/2019 Lima, 4 December 2019. Lessons Learned on Open Pit and Underground Mine Closure Insights from Germany Dr. Michael Haschke / Rüdiger Durchholz Am TÜV 1 45307 Essen, Germany email: ruediger.durchholz@dmt-group. Earth. Insight. Values.

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UNDERGROUND MINE SURFACE SUBSIDENCE

2021-11-23 · •Underground mine •Used a lower adit and light rail haul tunnel at the base of steeply dipping ore bodies •Stopes extend nearly vertically in excess of 500 feet •Part of an active subsidence monitoring and reclamation program •Thin roofed areas •Safety Mine Design, Operation, and Closure Conference 2013

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BAT-COMPATIBLE CLOSURES OF ABANDONED

2017-10-30 · abandoned mine sites is therefore a potential threat to bat populations. Where abandoned underground mines slated for closure provide significant habitat, bat-compatible closures can be designed and constructed to meet closure objectives while preserving the valuable wildlife habitat these mines provide.

Read More

Understanding mine closure and environmental risks ...

2014-2-12 · Beale called underground mines in lowland terrain the easiest to manage for closure, while underground mines in elevated terrain are the most difficult.

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Welcome Coal-mine Closure Companies

2019-10-22 · Summary of Best Applied Practice in Coal Mine Closure Procedures −Underground (Hard Coal) −Surface Installations (Coking Plant) −Open Pit (Lignite) Type Example - Post-Closure Mine Water Management Innovation –Closurematic: Automated Mine Closure Content 10/22/2019 Slide 3 Research & Development

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Mine entrance sealing – Mine Closure

In underground mines, a mine entrance sealing is used as a closure method to prevent and attenuate mine drainage, and to minimise oxidation of disulphides. Sealing may also prevent emission of hazardous gases formed in abandoned mine workings. Moreover, mines are often sealed for safety reasons to prevent unauthorised entrance to hazardous open ...

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Mining Consultants | Exploration to Mine Closure | SRK

Underground Mine Design, Planning, and Engineering ... Environment, Community, and Mine Closure Environment, Community, and Mine Closure. Cost-effectively solve your environmental challenges while minimizing liabilities and complying with regulations. Learn More.

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Mine Closure and Remediation for the COMINAK Mine in

On March 31, 2021, the Akouta mine in Niger operated by COMINAK ceased production after nearly 50 years of service. The cessation of mining activities was decided by its Board of Directors on October 23, 2019. COMINAK, created on June 12, 1974, has operated since 1978 the Akouta, Akola and Ebba deposits located in the Agadez region and produced ...

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Underground Mining Methods and Equipment

2020-8-25 · UNESCO – EOLSS SAMPLE CHAPTERS CIVIL ENGINEERING – Vol. II - Underground Mining Methods and Equipment - S. Okubo and J. Yamatomi ©Encyclopedia of Life Support Systems (EOLSS) 2. Strength of the hanging wall, footwall, and ore body. 3. Economic value of the ore and grade distribution within the deposit.

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Geotechnical considerations in underground mines

2022-2-8 · Geotechnical Considerations in Underground Mining/Department of Industry and Resources Guideline Document No.: ZME723QT 1.0 INTRODUCTION The potentially hazardous nature of underground mining requires the application of sound geotechnical engineering practice to determine the ground conditions, the ground support and reinforcement requirements, as

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Lessons Learned on Open Pit and Underground Mine

2020-8-24 · Underground Mine Closure Insights from Germany 12/6/2019 Lima, 4 December 2019. Lessons Learned on Open Pit and Underground Mine Closure Insights from Germany Dr. Michael Haschke / Rüdiger Durchholz Am TÜV 1 45307 Essen, Germany email: ruediger.durchholz@dmt-group. Earth. Insight. Values.

Read More

UNDERGROUND MINE SURFACE SUBSIDENCE

2021-11-23 · •Underground mine •Used a lower adit and light rail haul tunnel at the base of steeply dipping ore bodies •Stopes extend nearly vertically in excess of 500 feet •Part of an active subsidence monitoring and reclamation program •Thin roofed areas •Safety Mine Design, Operation, and Closure Conference 2013

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Mine entrance sealing – Mine Closure

In underground mines, a mine entrance sealing is used as a closure method to prevent and attenuate mine drainage, and to minimise oxidation of disulphides. Sealing may also prevent emission of hazardous gases formed in abandoned mine workings. Moreover, mines are often sealed for safety reasons to prevent unauthorised entrance to hazardous open ...

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Reclamation and mine closure plan at Pogo Mine, Alaska

reclamation and mine closure plan needs to ensure that water quality is not unduly influenced after mining operations cease. The key components of the plan are underground mine closure and the reclamation of drystack tailings facility. The drainage from the underground should be prevented by sealing the portals properly.

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Recharge-driven Underground Dewatering And Post

2021-12-28 · As mining ended, the underground workings were cleared of all potentially hazardous material and the mine was allowed to flood by stopping all dewatering pumps on 31st December 2015. Bulkheads and three low pressure barricades were built underground to provide a restriction to groundwater flow within the workings post-closure.

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Mine Closure and Remediation for the COMINAK Mine in

On March 31, 2021, the Akouta mine in Niger operated by COMINAK ceased production after nearly 50 years of service. The cessation of mining activities was decided by its Board of Directors on October 23, 2019. COMINAK, created on June 12, 1974, has operated since 1978 the Akouta, Akola and Ebba deposits located in the Agadez region and produced ...

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Paper: Key mine closure lessons still to be learned

Abstract: The focus of mining project feasibility studies and operations is still on short-term profitability with little view to a post-closure landscape and liability. The faults of both the original and the operation’s mine planners are therefore vested upon the closure teams who must deal with these planning decisions.

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Mining Consultants | Exploration to Mine Closure | SRK

Underground Mine Design, Planning, and Engineering ... Environment, Community, and Mine Closure Environment, Community, and Mine Closure. Cost-effectively solve your environmental challenges while minimizing liabilities and complying with regulations. Learn More.

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Berrima Colliery Mine Closure | Boral

As the mine is moving to closure, underground work ceases including the operation of the underground water pumps meaning water is left to flow and drain naturally through the colliery. 2014 Boral provides advice to Regulatory Stakeholders of the intention to move towards, and seek approval for, final closure of the Boral Colliery

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Geotechnical considerations in underground mines

2022-2-8 · Geotechnical Considerations in Underground Mining/Department of Industry and Resources Guideline Document No.: ZME723QT 1.0 INTRODUCTION The potentially hazardous nature of underground mining requires the application of sound geotechnical engineering practice to determine the ground conditions, the ground support and reinforcement requirements, as

Read More