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Stope Height At The Oyu Tolgoi Block Caving

2020-07-19T07:07:31+00:00

Underground Development - Oyu Tolgoi LLC

Key facts about Oyu Tolgoi underground mine: 80 per cent of Oyu Tolgoi’s value lies beneath the surface; Mining method: Block caving; Operations: The mine will work 365 days a year with two 12-hour shifts. The total conveyor length (13.2 kilometres) is as long as the distance from the Sukhbaatar Square to Tolgoit station.

Development planning for the Oyu Tolgoi panel cave mine

Panel caving was selected for Oyu Tolgoi due to the large orebody and generally weak ground conditions. The Hugo North orebody is approximately 225 m wide, 2,000 m long, and 1,000 m high. The underground project currently underway is the planned first lift of the orebody, with a lift height of +500 m and an average column height of 350 m.

Author: Katrina Crook, Ferrin Prince

Oyu Tolgoi Phase 2: Plans, Issues and Risks: Executive Summary

The Block caving mining method chosen for underground mining at OT Phase is expected to result in surface subsidence across an eight (8) square kilometer area. The 2005 Oyu Tolgoi Integrated Development Plan (IDP) Executive Summary describes the block cave underground mining method as “[a] safe, proven, and highly productive method

Major Mines Projects Oyu Tolgoi Mine

Oyu Tolgoi consists of Oyut, Hugo Dummett (Hugo South and Hugo North) and Heruga deposits. ... included continued investment into the development of the Hugo North underground mine as a block caving operation (Phase 2 of the Project). Development of Phase 2 commenced in July 2016. ... 15 m bench height (or batter) in all rock slopes.

Oyu Tolgoi Phase 2: Plans, Issues and Risks

1) the Southern Oyu Tolgoi (SOT) open pit and 2) The deeper Hugo North “Lift 1”ore, mined using the underground block caving method. Other mineral resources identified at the Oyu Tolgoi site but not proposed for the “Reserve Case” mine - “Phase 2” - are described as part of the long-term “Life of Mine Case” (OTTR 2014).

Oyu Tolgoi Project: Hugo Dummett Mine, Shaft No. 1 and ...

The Oyu Tolgoi Project’s Hugo Dummett Mine was designed to extract the deep copper/gold porphyry deposit by block caving methods across an operating life exceeding 40 years. Our role in Mongolia was to help Ivanhoe mines realize their production targets by providing engineering, design, procurement, and quality assurance for Shafts No. 1 and ...

Oyu Tolgoi - Rio Tinto

Oyu Tolgoi is one of the largest known copper and gold deposits in the world. It is also one of the most modern, safe and sustainable operations in the world. 2020 figures. Oyu Tolgoi also produced 182K ounces of gold and 876K of ounces of silver. Rio Tinto owns 50.8% of Turquoise Hill Resources, which owns 66% of Oyu Tolgoi.

Major Drilling helping narrow down Oyu Tolgoi orebody ...

Oct 02, 2019  Major Drilling helping narrow down Oyu Tolgoi orebody. Major Drilling says it is nearing the completion of a cave tracking system installation at the Turquoise Hill Resources and Mongolia government-owned Oyu Tolgoi copper-gold mine, in Mongolia. In early 2000, Major Drilling established a drilling campaign in the middle of the Gobi Desert ...

Block Caving Mining Magazine - REDPATH MINING

BLOCK ANd pANeL CAVING Block caving is an underground mining method that uses gravity to exploit massive, steeply dipping orebodies located at depth, particularly those with disseminated mineralisation or that are low-grade in nature, but too deep to be extracted using open pit methods. Block caving also depends on insitu stresses and

Block caving - QueensMineDesignWiki

DevelopmentSelection ConsiderationsPlanningInfrastructure RequirementsCase StudiesThe time taken to establish caving operations varies, and it is not uncommon to take a period of at least 10 years from the time of study commencement to achieving project approval. For some large-scale planned caving operations, studies have been under way for more than 20 years with a final decision still yet to be made. The early stages of a block cave development involve a high level of construction activity, as the undercut anSee more on minewiki.engineering.queensu.ca

Development planning for the Oyu Tolgoi panel cave mine

Panel caving was selected for Oyu Tolgoi due to the large orebody and generally weak ground conditions. The Hugo North orebody is approximately 225 m wide, 2,000 m long, and 1,000 m high. The underground project currently underway is the planned first lift of the orebody, with a lift height of +500 m and an average column height of 350 m.

Rio's credit profile not affected by Oyu Tolgoi expansion ...

Jul 28, 2019  Rio Tinto, however, is not alone when it comes to facing challenges related to block caving, the underground hard-rock mining method it plans to employ at Oyu Tolgoi.

SEC

The Entrée/Oyu Tolgoi JV Property includes the Hugo North Extension copper-gold deposit and the Heruga copper-gold-molybdenum deposit. The resources at Hugo North Extension include a Probable reserve, which is included in the first lift (“Lift 1”) of the Oyu Tolgoi underground block cave

news

mass mining and caving. Cave mines can have a significantly smaller footprint than a comparable open pit, since waste mined is only limited to underground infrastructure development. continued news Caving Addressing the challenges and future of cave mining Infrastructure development at Oyu Tolgoi No. 56 SRK Consulting’s International ...

gold processing from row stone

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labelled diagram of automatic crushing machine

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Parched Persistent - Canadian Mining Journal

Dec 01, 2011  The planned height of the first production shaft for the underground mine is 97 m and already more than 60 m have been completed, and when you consider the surrounding landscape at the Oyu Tolgoi site, it’s quite a sight already! And naturally, none of this work would be at the stage it is now without the 14,800+ workers at the site.

Drilling Enhances Shaft Safety - WOMP

It has developed three drills specifically for use in block-cave operations: the Redbore 30, which is the newest addition for small blind-hole raises up to 1.06-m diameter in low back-height applications; the Redbore 40UR for raises to 1.2 m in diameter; and the Redbore 50 for raises to 1.5 m in diameter in low-back applications.

Entrée Resources Reports Updated Feasibility Study for its ...

Entrée/Oyu Tolgoi JV Property Highlights: Hugo North Extension Lift 1 Updated Reserve Case After-Tax NPV(8%) of $114 million (CAD$139 million*); Hugo North Extension Lift 2 Preliminary Economic Assessment After-Tax NPV(8%) of $306 million (CAD$372 million*); First development production from Hugo North Extension Lift 1 expected in 2022

Large cost overrun by Canada’s Turquoise Hill haunts ...

Jul 28, 2019  Turquoise Hill now has a market value worth $1.5-billion, down from $13.3-billion at the height of the commodity supercycle in 2011. The update has bolstered fears that miners still can’t ...

Characterization of discrete fracture networks and their ...

A model was built to simulate block caving and run tests of specific rock mass parameters to evaluate their impact on caveability and fragmentation. The potential of the Block Shape Characterization Method (B) for evaluating the block shape distribution within a rock mass was further confirmed, especially when used with the DFN method.

STOP IT NOW- 50 behaviors need to be avoided in coal ...

Jan 20, 2020  STOP IT NOW! 50 BEHAVIORS NEED TO BE AVOIDED IN COAL WASHING PLANT OPERATION. Are your workers still existing these behaviors as below in the coal washing plant? If yes, pls stop it right now. 01 Fail to have a good rest before night shift or work with fatigue and illness. 02 Fail to wear personal protective equipment before going to work.

Mass Mining Services and Statement of Qualification

Apr 18, 2014  Mass Mining Services and Statement of Qualification. Download Now. Download. Download to read offline. Engineering, Technology, Business. Apr. 18, 2014. 1,821 views. Since 2005, Itasca has been one of the key contributors in the extensive research project on large open-pit stability, the Large Open Pit (LOP) project, initiated by the CSIRO ...

Working Abroad PARCHED PERSISTENT

D. Garamjav who first visited Oyu Tolgoi during a 1983 survey, Ivanhoe Mines quickly set up camp. Within weeks of signing the agreement in May 2000, Ivanhoe Mines started a reverse circula-tion (RC) drill program, and by the end of the year, had completed 109 holes totaling more than 8,800 m. In 2001, the exploration budget was

Oyu Tolgoi - Home Facebook

Oyu Tolgoi Underground mine, where most of the ore body of the Oyu Tolgoi lies, will be mined using the block caving method. We are working on a huge development project where the caving method will be in use to access and mine the high-grade orebody

SEC

The Entrée/Oyu Tolgoi JV Property includes the Hugo North Extension copper-gold deposit and the Heruga copper-gold-molybdenum deposit. The resources at Hugo North Extension include a Probable reserve, which is included in the first lift (“Lift 1”) of the Oyu Tolgoi underground block cave

Block Caving Mining Magazine - REDPATH MINING

BLOCK ANd pANeL CAVING Block caving is an underground mining method that uses gravity to exploit massive, steeply dipping orebodies located at depth, particularly those with disseminated mineralisation or that are low-grade in nature, but too deep to be extracted using open pit methods. Block caving also depends on insitu stresses and

(PDF) Open pit or block caving? A numerical ranking method ...

A switch from open pit mining to block caving mining could be another great development in this century. ... AN, D. 2012. Oyu Tolgoi project, IDOP Technical ... (errors in the measurement of ...

Addressing The Challenges And Future Of Cave Mining SRK ...

Caving methods can be used with any type of commodity since it is the geological and geotechnical context that is important. There are many parameters to consider but typically the orebody needs to be at least 100 m thick for cave mining to be economical. In the past, typical caving heights were 150-250 m.

underground mining Archives - International Mining

Majority owned by Rio Tinto through its 66% stake in Turquoise Hill Resources, Oyu Tolgoi is currently being mined as an open-pit operation (producing 146,346 t of copper and 241,840 oz of gold in 2019), yet previous studies have indicated a combined open-pit and underground operation could up the tally to around 500,000 t/y of copper.

Characterization and analysis of discontinuous subsidence ...

While block caving presents an economic means to develop lower grade ore deposits, it often leads to significant ground deformations threatening the safety of overlying mine infrastructure. For guidance on relationships between caving depth and surface subsidence, a comprehensive cave mining database was developed and the database clearly shows caving-induced surface deformations tend to be ...

(PDF) Stochastic Optimization of Long-term Block Cave ...

Stochastic Optimization of Long-term Block Cave Scheduling. Download. Related Papers. Production Scheduling in Block Caving with Consideration of Material Flow. By Crimson Publishers Mining Mineral Science. Underground long-term mine production scheduling with

Longwall Top Coal Caving (LTCC) Mining Technology

Longwall Top Coal Caving (LTCC) is a special designed longwall mining method for very thick seams (thickness is more than 4.5m) where good quality coal is being left because "conventional" longwall equipment has not yet been designed to operate successfully beyond around 5m mining height.

Nordic Equipment for Worldwide Markets

Commissioning Drives at Oyu Tolgoi Since the beginning of 2011, Sweden’s Hägglunds Drives has been a fully integrated part of Bosch Rexroth, although the name is used for the radial piston motors and hydraulic drive power units that drive systems such as conveyors, bucket-wheel reclaimers, ship unloaders, cement kilns and other heavy-duty ...

Hot News: Pacific Standard. Smart Journalism. Real Solutions.

Jul 09, 2013  An example to paint this picture: Oyu Tolgoi, Rio Tinto's giant copper mine 300 miles south of Ulaanbaatar, in the Gobi Desert, is nearing completion of the first phase of construction. It will begin as an open pit, then expand into underground operations in the coming decade. The first ore was to have been smelted in June 2013.

sec.gov

4 . ENTRÉE RESOURCES LTD. ANNUAL INFORMATION FORM . DATE OF INFORMATION, DEFINED TERMS AND ABBREVIATIONS . Unless otherwise specified in this Annual Information Form (the “AIF)

Stockhouse

Oct 23, 2019  Meanwhile Indonesia's copper concentrate production crashed 55% in the first half, as the Grasberg mine transitions to underground block caving and the Batu Hijau mine moves to Phase 7, leaving an HI global refined copper deficit of around 220,000 tonnes. We can see this deficit beginning to be reflected in the supply of stockpiled copper.

Jimmy Ginting Manik - Mining Project Manager - MAXAM ...

MAXAM. jun. de 2017 - ago. de 20192 años 3 meses. Oyu Tolgoi site, Mongolia. Main responsibilities: To ensure injury free operations. Ensure strict compliance of all works. To ensure contractual key performance indices are achieved. To ensure the units maintenance program is carried out on-time and according to the planned tasks.

Title: Mining Project Manager at