Underground hard-rock mining - Wikipedia

Sub-Level Caving Subsidence reaches surface at the Ridgeway underground mine. Using this method, mining is planned to extract rock from the stopes without filling the voids; this allows the wall rocks to cave in to the extracted stope after all the ore has been removed. The stope is then sealed to prevent access.

Evaluation of the Recovery of Block Cave Underbreak by Sub ...

block cave and sub-level cave mining methods, operations haven't been without their technical challenges. The E26 orebody is a massive copper porphyry deposit, mainly comprising of altered and mineralised volcanics. During mining of E26 Lift 2 block cave, a wedge of high grade material failed to cave, even with the assistance of preconditioning.

Sub-level open stoping - QueensMineDesignWiki

Description. This method is usually considered as an alternate to sublevel caving when a lower dilution method is needed and where the rock is fairly competent. The production for a mine using sublevel stoping can range from 15- 40 tons/employee-shift, while one stope can produce greater than 25000 tons per month.

Successful Sublevel shrinkage at Mt Wright

Sep 20, 2013· Mining is a window into sublevel shrinkage, which is very similar to sublevel caving,at its operations at Mt Wright; and in this regard the technology has been very beneficial. Resolute has been ...

Planning Considerations for Deep Level Mining at ...

compared to other sub-level caving operations. The mining horizon of the HWL is currently at the 9715 Level, 810 m below surface. The P1 Progress shoot is also being mined using sub-level caving. Its footprint is nominally 120 m in length by 30 m in thickness, making it one of the narrowest sub-level caves in the world. Production is currently

What every mining professional needs to know about block ...

Oct 01, 2020· Today, more than 50 cave mining projects, at various stages of development, are being explored around the world (Jakubec, 2018). While the transition from open pit operations to underground caving is long and complicated, many mining companies are using cave mining methods as an alternative to expand the life of the mine.

Sublevel Caving - Oraee

The advantages of sublevel caving are claimed to be that: It can be applied to variety of rock condition - Quite flexible. It is flexible as regards irregularity of the ore and low width, down to about 3.5 - 4m. Good safety records since all operations take place in a drift size heading that can be well supported. High mechanizability.

Sublevel Caving Paper - [PDF Document]

Dec 28, 2015· Drifting is a fairly substantial part of sublevel caving and whilst in earlier times pre- ference was given to air-leg mounted rock drills, the mines are now changing over to various types of drill rigs. In smaller headings of say 2.2 m 2.5 m one of the rigs used is the . SUBLEVEL CAVING 131 " L ~-~ 132 I. JANEL1D AND R. KVAPIL

(PDF) Sublevel Stoping Underground Mining Methods

Sublevel open stoping: design of the O640, L651 and N 659 sub level open stopes in the 3000 orebod y of the Mount Isa copper mines, Queensland …

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

International surveys have shown that sub-level caving and block caving are the preferred methods in underground . ... subsidence data from block …

Sublevel caving - QueensMineDesignWiki

The advantages of sublevel caving are claimed to be that: It can be applied to variety of rock condition - Quite flexible. It is flexible as regards irregularity of the ore and low width, down to about 3.5 - 4m. Good safety records since all operations take place in a drift size heading that can be well supported. High mechanizability.

Sierra Metals Inc. - Projects - Operations - Yauricocha Mine

Dec 31, 2020· Sub-level caving, cut and fill: Processing Method: Crushing and grinding, floatation: Milling/Processing Capacity: 3,150: Number of Employees & Contractors: 759 (FT), 1,577 (Contract) Copper Eq Production (000's) Lbs - guidance for 2021: 79,300 - 85,600: Cash Costs - guidance for 2021: $0.96 - $1.03: AISC - guidance for 2021: $1.89 - $1.98

Petra Diamonds | How are diamonds mined by Petra? - Petra ...

Sub-level caving. This method owes the first part of its name to the fact that work is carried out on intermediate levels (that is, sub-levels) between the main production levels. It follows the same basic principles as the block caving mining method, …

Telfer - Byrnecut

Byrnecut undertake all underground mining activity on the site; from large scale sub-level caving operations to smaller narrow vein high grade reef stopes. The mine has made extensive use in the past of autonomously operated loaders tipping into ore-passes, with chute loaded trucks hauling material on a consolidated haulage level to the main ...

sublevel caving method cost estimation pdf - BINQ Mining

Apr 21, 2013· Engineering economics deals with the methods that enable one to take decision towards minimizing …. Sublevel caving. 20-40 … budget costs and other cost estimates to provide the epitome in cost control. Table ….. Stoping operations are planned for the ore zone at to 20 meters thick with dip 35-40 degrees as …. » More detailed.

ORB - Polymathian

Sub-level Caving. Manage development and production tasks spanning strategic planning through to real-time dispatch. Learn more. ... ORB is able to generate plans across three modules that cover all time horizons in your mining operations. Modules can be licensed individually or in combination to provide a holistic planning system.

Geomechanics of Cave Mining Hybrid Seminar | Australian ...

Jun 14, 2021· Ian has over 25 years' experience in the mining industry as a geotechnical engineer, predominantly in caving operations. His research, consulting, and operational experience has been focused on drill and blast design and optimisation, sub-level and block cave material flow and recovery, management of cave operational risk and design, rock ...

Sub Level Caving - YouTube

Mar 22, 2007· A method of underground mining operation.

Sub Level Caving - AnswersHub.net

Experience from LKAB, Sweden – Sub-level caving (SLC) is an important mass mining method, used at LKAB. The caved rock or debris at the SLC interface reduces the fragmentation and the swelling of the blasted ring and it dissipates the explosive energy. These phenomena may immobilize the blasted ring, causing ore losses.

Advanced Geotechnical Monitoring Systems - Elexon Mining

In Sublevel Caves, ring recovery and material flow has a critical impact on economic performance and operational efficiency. The Smart Marker System comprises of a collection of wireless, robust electronic markers that are embedded in the ore body of a block or sublevel cave mine to track ore flow.

Underground Mining Methods and Equipment

1.2. Underground Operations in General 1.3. Room-and-pillar Mining 1.4. Sublevel Stoping 1.5. Cut-and-fill Stoping 1.6. Longwall Mining 1.7. Sublevel Caving 1.8. Block Caving 2. Underground Mining Machinery Glossary Bibliography Biographical Sketches Summary The first section gives an overview of underg round mining methods and practices as used

mining - Blasthole stoping | Britannica

Mining massive deposits. Several of the methods described above (e.g., blasthole stoping, sublevel caving) can be applied to the extraction of massive deposits, but the method specifically developed for such deposits is called panel/block caving.It is used under the following conditions: (1) large ore bodies of steep dip, (2) massive ore bodies of large vertical extension, (3) rock …

Sub Level Caving | kichuu.com

Material Handling The following steps outline the material handling process in sub level caving operations following production blasting and sufficient drawpoint ventillation: 1. The ore is mucked out of a drawpoint and transported using a LHD to an orepass located in the sublevel extraction drift 2.

Sublevel cave mining: unearthing new opportunities ...

Mar 24, 2021· Sublevel caving: unearthing new opportunities . The known resource base for base metals is increasingly comprised of large scale, low-grade deposits, situated at increasing depths where underground cave 1 mining methods are the only viable means of economic extraction.. In the spectrum of underground mining methods, caving methods are the lowest …

Sublevel Caving - 911 Metallurgist

Mar 01, 2019· Sublevel caving has created through its possibilities of standardizing and mechanizing operations and equipment. Other advantages are that the method can be adapted to orebodies of different shape, size, strength etc., and especially that working conditions can be made safe and relatively comfortable since all work is carried out in drifts.

SUBLEVEL CAVING TECHNIQUE by Partha D Sharma -

Jun 25, 2010· Sublevel caving techniqueSimplicity and low cost are the essence Development * Significant. Almost 20% of the ore is mine during development * Sublevels are established generally at 7.6-12.2 m ...

Thunderbox - Byrnecut

Thunderbox will transition into a large modern sub-level caving operation and Byrnecut are pleased to partner with Saracen, recently merged with Northern Star to become one of Australia's largest gold producers. As a previous open pit operation, an airstrip and camp are already established on site.

A Sub-Level Caving Algorithm for Large-Scale, Small-Strain ...

Aug 06, 2018· Block caving, in turn, was the logical scale-up from sub-level caving. In the first application of sub-level caving, the ore was not drilled and blasted completely between two sub-levels, but only parts were broken by induced caving; hence the name sub-level caving (Janelid 1972). At current day SLC operations, the ore mass between the sub ...