stope height at the oyu tolgoi block caving

Application of simulation techniques in development

Application of simulation techniques in development

The size, geotechnical characteristics and depth of mineralization at the deposits on the Entre/Oyu Tolgoi JV Property make block caving the best suited mining method, and although the method has large, early capital investment requirements, it is highly productive and has low operating costs. ... maximum height of draw, consideration of ... Jon Gantumur Greater Brisbane Area Senior Mining Engineer - Technical and Integrated Planning - Oyu Tolgoi at Oyu Tolgoi at Rio Tinto 500 connections See Jons complete profile on 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.

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Entre Resources Reports Updated Feasibility Study for its

Entre Resources Reports Updated Feasibility Study for its

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 ABOUT THE ENTRE/OYU TOLGOI JV PROPERTY . The Oyu Tolgoi project includes two separate land holdings the Oyu Tolgoi mining licence, which is held 100% by OTLLC (66% Turquoise Hill Resources 34% Government of Mongolia), and the Entre/Oyu Tolgoi JV Property, which is a partnership between Entre and OTLLC. Redpaths Redbore 30 is designed for drilling blind-hole block-caving raises. Redpath Develops Block-cave Drills Redpath Raiseboring told EMJ that the company has expanded its raise-borer product line significantly in recent years to include seven raise-drill series for miningthe Redbore 30, 40, 50, 50MDUR, 70, 90 and 100.

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Oyu Tolgoi Phase 2 Plans Issues and Risks Executive

Oyu Tolgoi Phase 2 Plans Issues and Risks Executive

Total length of tunnels over the life of Hugo North Lift 1 203 kilometres (mostly with a height of 5.5m and a width of 5m) What is block caving? The block caving method of mining uses the force of gravity to extract ore from an underground deposit. Oyu Tolgoi is a large copper-gold complex located in southern Mongolia. It contains the Hugo North deposit which will be extracted using the panel caving method. Pre-production development (PPD) will involve over 40 km of lateral development and 70,000 m of massive excavations. Dec 04, 2019 Barry has been a GEOVIA GEMS and PCBC site expert since 2006 across multiple block caving sites including Palabora Lift I as a Superintendent Cave Management, Freeport DOZ and DMLZ as a Cave Management Technical Expert, Palabora Lift II Superintendent Mine Design and now Oyu Tolgoi Technical Integrated Planning.

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Rio Tinto No Progress Only Hollow Talk Gold Equity

Rio Tinto No Progress Only Hollow Talk Gold Equity

Oyu Tolgoi Key Recommendations February 4, 2013 ... The company should stop all work on the Undai River diversion, which has moved forward without appropriate consultation with herders. ... Block Caving Block caving is a method of mining in which workers remove the support rock from beneath the ore bodies, resulting in cave-ins, which ... Many large-scale open-pit operations have plans to progress into block caving operations over time, including Oyu Tolgoi and Grasberg. This mining method is typically used in situations where the orebody is both large and steeply dipping, and because of the depth below surface is 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.

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Newcrest eyes deeper mines smaller footprint with block

Newcrest eyes deeper mines smaller footprint with block

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. Oyu Tolgoi, in the southern Gobi Desert of Mongolia, is expected to produce 622,000 tonnes of copper and 669,000 ounces of gold at its peak in 2025. It is jointly owned by the government of Mongolia (34 %) and Turquoise Hill Resources (66 %), with Rio Tinto the majority owner of the latter. Panel caving was selected for OT due to the large orebody and good ground conditions for caving. 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.

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Silvercorp Metals Inc Mining 101

Silvercorp Metals Inc Mining 101

Apr 12, 2021 Based on my experience with block caving in Arizona, the depth of this deposit, and the problems you are having with building the block cave at Oyu Tolgoi, your design wont work. If you destroy Oak Flat, you will destroy our towns chance to build a recreation based sustainable economy. Open pit or block caving? A numerical ranking ... subsequently removing support from ore and overburden at increasing height above the initial excavation, ... Oyu Tolgoi Rio Tinto Copper-gold ... 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 ...

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PDF Open pit or block caving A numerical ranking method

PDF Open pit or block caving A numerical ranking method

a. Block Caving Block caving is a method of mining in which workers remove the support rock from beneath the ore bodies, resulting in cave-ins, which fracture and drop blocks of the ore body, as well as causing subsidence of the land surrounding the cave-in zone. This land will be too physically unstable to Mar 19, 2021 Rio Tinto unveiled a pathway for the ongoing development of the underground project at Oyu Tolgoi in Mongolia, one of the largest known copper and gold deposits in the world (earlier post). The definitive estimate details how Oyu Tolgoi underground will achieve sustainable production for Panel 0 by October 2022 for development capital of $6.75 Predictions of Caving and Infrastructure Stability in Support of the Feasibility Study for Panel Caving at Oyu Tolgoi, Hugo North, Lift 1 Jul 2011 - Jul 2011 Geotechnical studies of cave growth, subsidence and infrastructure stability were performed in support of the feasibility study for the Hugo North Orebody at Oyu Tolgoi Mine.

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Committee Members Mine Ventilation Society Australia

Committee Members Mine Ventilation Society Australia

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. Jan 15, 2018 The size, geotechnical characteristics and depth of mineralization at the deposits on the Entre/Oyu Tolgoi JV Property make block caving the best Dec 17, 2020 Most of the value of Oyu Tolgoi is deep underground the planned mining operation will eventually have approximately 200 kilometers of tunnels, with an average height of 5.5m and width of 5m. These will be reached by 5 shafts, with the deepest reaching 1.3 km below the surface. Rio Tinto will use block caving technology to mine the ore body.

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