our products

D&Q Mining is a high-tech company integrating R&D, production and sales. It provides mature products and solutions such as crushers, sand making, milling equipment, mobile crushing stations, etc., for aggregate, mining and waste recycling.

experience with sublevel caving ore

Sublevel caving Underground Mining -Theory and

Jun 14, 2019· These variants are known as transversal and longitudinal sublevel caving. As ore is blasted and hangingwall is caved under the gravity, by loading the ore in the sublevel drift gravity flow of broken rock is formed. At the beginning, pure ore is loaded (30-40%) and then miming of the ore and waste rock occurs.

More

Sublevel Caving — Today’s Dependable Low-Cost ‘Ore Factory

Much of the theory upon which the Sublevel Caving (SLC) method is based was developed in Scandinavia many years ago. It was based mainly on ‘bin’ theory and ‘ellipsoid of draw’ configurations derived from sandbox models. In many cases, classical SLC layouts influenced by these early theories obtained relatively poor results. Early dilution entry, low...

More

Sub Level Caving PHDessay

Apr 14, 2020· 7. 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.

More

Sublevel Caving Oraee

So, best conditions for sublevel caving are fairly compact ore, weak walls and steep dip. Advantages. 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.

More

(PDF) An assessment of dilution in sublevel caving at

In sublevel caving, the ore blocks are usually mined in descending order. When. experience, more than 20 % dilution is considered as excessive (Pakalinis et al., 1995).

More

Sublevel Caving: Underground Mine Design Flash Cards: Koofers

Describe Sublevel Caving-ore body is divided into sublevels-each sublevel has drifts that penetrate the entire ore body -paralled for narrow ore bodies -crosscuts for wide ore bodies. Drilling from one sublevel drift to the above section is done ahead of time

More

SUBLEVEL CAVING TECHNIQUE by Partha D Sharma Issuu

Jun 25, 2010· In sublevel caving, ore is developed from a series of sublevels spaced at regular intervals throughout the orebody. Experience from LKAB, Sweden Sub-level caving

More

Caving Underground Mining Methods (longwall, Sublevel

Oct 23, 2014· Figure shows sublevel caving is used to mine large orebodies with steep dip and continuation at depth. 47. Design: transverse sublevel caving this case, the galleries of production (drifts) are perpendicular to the strike of the ore; Mining recoveries are greater than the longitudinal layout. Prof. Dr. H.Z. Harraz Presentation Caving methods 47

More

Sublevel caving: Engineered to Perform Elexon Mining

Oct 02, 2013· Source: Mining Magazine, September 2013. Sub-level caving is a highly efficient, top-down, underground bulk mining method. Recent developments in sub-level cave mining have advanced the understanding of the technique and its production performance, which allow it to now be considered as a highly viable alternative to open stoping and, in some cases, even to block caving.

More

14 December 2018 Sublevel Caving success at Syama

Sublevel caving will continue at the 1105 level and additional production areas will be established on the 1130 and 1080 sublevels. Ore production is expected to

More

Cave mining 2040: advancing cave mining to meet future

Jun 15, 2018· 7. Sublevel caving. Sublevel caving is a method often evaluated in parallel with block and/or panel caving options. It requires multiple levels of development and ongoing ring blasting for production. Sublevel caving allows for a more selective extraction but typically achieves lower production rates than block and panel caving methods.

More

Caving Underground Mining Methods (longwall, Sublevel

Oct 23, 2014· Figure shows sublevel caving is used to mine large orebodies with steep dip and continuation at depth. 47. Design: transverse sublevel caving this case, the galleries of production (drifts) are perpendicular to the strike of the ore; Mining recoveries are greater than the longitudinal layout. Prof. Dr. H.Z. Harraz Presentation Caving methods 47

More

Method of underground mining sublevel caving on

Method of underground mining sublevel caving on tamakaimoana ore involves the driving of sublevel workings, layer-by-layer breaking of ore on potatah on tamakaimoana ore and partial release of ore after blasting each layer through the end sublevel generation, the simultaneous dosed ore transport horizon floor, according to the technical

More

A new mine planning tool for sublevel caving mines

A new mine planning tool for sublevel caving mines D. Villa and T. Diering 238 Caving 2010, Perth, Australia 2 Principles of PCSLC The PCSLC development tool is being done in conjunction with SRK Consulting enabling Gemcom to take advantage of the considerable SLC experience gained by SRK over the years. This experience is proving

More

The Control of Ore-Draw From Caving Stope OneMine

From the ore production of all under- ground mines, the largest annual production of underground metalliferous mines in the world is caving methods. The sublevel caving in Kiruna Iron Mine of Sweden has reached annual ore production over 20 million tons in 1974.

More

SUBLEVEL CAVING TECHNIQUE by Partha D Sharma Issuu

Jun 25, 2010· Sublevel caving is usually carried out when mining of the orebody through an open pit method is no longer economically feasible. Mining now proceeds underground, underneath the

More

Block Caving: Mining Specialization E & MJ

With its production level at a depth of 1,050 m, Newcrest Mining developed Ridgeway Deeps beneath the existing sub-level caving mine. The transition took place in 2009, although as a 2012 analysis note from Credit Suisse suggested, the move here did not go completely to plan. “The caving rate and fragmentation is in line with modeled projections.

More

What is the difference between sublevel stopping and

For sublevel stoping the ore body and walls should be strong enough to support open stoping. In this method, the ore is excavated in open stopes, retreating from one end of the stope toward the other. The orebody is developed first by a series of

More

(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,Australia. Department of Mining, University of

More

Sub Level Caving Rana Gruber

Sub level caving method allows working in parallel on different sub levels in the mine. This means that continuous excavation works can be on-going at one sub level without interfering with another. Project Sublevel Caving was carried out during the years 2009 and 2011, with a budget on 450 million NOK.

More

Sub-level open stoping QueensMineDesignWiki

Sublevel Open Stoping originated in the early 1900’s in iron ore mines in Michigan, USA. It was developed over the years from a method originally known as short hole bench and train mining.Generally a large scale open stoping method, it is often referred to as long hole or blast hole stoping.

More

A new diversion drawing technique for controlling ore loss

High ore loss and dilution, which are mainly caused by direct contact between blasted ore and caved rock, generally exist in the process of exploiting inclined medium-thick ore bodies using the sublevel caving method. An improved diversion drawing technique was proposed with the aim of controlling ore loss and dilution by changing the flow path and velocity of caved ore and rock.

More