Parameters influencing full scale sublevel caving material …
Sublevel caving (SLC) is a mass mining method based upon the utilisation of gravity flow of blasted ore and caved waste rock [1]. The method functions on the …
Analysis of the surface subsidence induced by sublevel caving …
Sublevel caving is a mass mining method based on utilizing the gravity flow of the blasted ore and caved waste rock. Sublevel caving without sill pillars is the main mining method used in underground metal mines in China (Li et al. 2006). Sublevel caving has the characteristics of safety, mechanization, flexibility and allows a favorable …
Sub-level caving: engineered to perform
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,...
Underground Mining Methods
Sublevel Caving 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 open pit. At first, both a raise and a network of tunnels are made. At different sublevels, jumbos are used for long hole drilling,
Sublevel caving: Engineered to Perform
Learn about sub-level caving, a top-down, underground bulk mining method that offers low unit cost and flexibility. Read …
Sublevel Stoping Mining Method | SpringerLink
Since the 1970s, the sublevel stoping mining method (Fig. 1) has been an open stope mining method with relatively advanced technology, high mechanization and efficiency, reasonable safety, and low loss for the application of trackless excavating equipment in the underground.Its main features include: (1) The stage height is 40–60 m …
Sublevel Caving Method with Sill Pillar | SpringerLink
Learn about the mining process of dividing a level into sublevels and using a bottom structure for ore removal. Find out the advantages, disadvantages, and …
Sublevel caving
Sublevel caving (SLC) is a mass mining method having high productivity and high safety. However, this method often causes a considerable amount of permanent ore loss. Interestingly, all lost ores are buried in the broken waste rocks that come mostly from the caved hanging wall and partly from the ore body in which ore and waste rock are ...
(PDF) Sublevel Shrinkage (SLSh) Mining—A State-of-the-art
Sublevel shrinkage (SLSh) is an underground mining method similar to sublevel caving (SLC) but with continuous backfilling from the top. It features a top-down mining sequence with production ...
Sublevel Caving Method with Sill Pillar
Sublevel caving method with sill pillar is the mining process in which a level is divided into several sublevels, a bottom structure specifically used for ore removal is furnished at the lower part ofeachsublevel,andstopingoforeproceedsfrom the top sublevel to the bottom sublevel (Fig. 1). It is also called sublevel caving method with bot-tom ...
A global review of recovery, dilution and draw control in …
Keywords: sublevel caving, dilution, recovery, benchmarking 1 Introductio n Sublevel caving (SLC) is a top-down mining method that relies on gravity flow of ore that is fragmented by blasting (Kvapil 1965). Blasted ore is extracted in accordance with a prescribed tonnage or grade shutoff.
Mining
Mining - Underground, Safety, Techniques: When any ore body lies a considerable distance below the surface, the amount of waste that has to be removed in order to uncover the ore through surface mining becomes prohibitive, and underground techniques must be considered. Counting against underground mining are the costs, which, for each ton of …
Possible variations of sublevel caving method in order to …
The final decision on most suitable variant of sublevel caving, beside parameters analyzed in this paper, also depends on technical issues, related to the drifting technology, long hole drilling and problems related to their operation in Jama Bor. of Mining Method, from the Technoeconomic Point of View in the Conditions of Mining the Copper ...
Sublevel caving | Britannica
In mining: Sublevel caving. This method owes the first part of its name to the fact that work is carried out on many intermediate levels (that is, sublevels) between the main levels. The second half of the name derives from the caving of the hanging wall and…. …
(PDF) A study of gravity flow principles of sublevel caving method …
The loss and dilution of ore by sublevel caving mining method is influenced by gravity flow principles of caved granular materials (rocks). Gravity flow of broken rock (muck) in dipping narrow ...
The Mechanics and Design of Sublevel Caving Systems
INTRODUCTION Sublevel mining is a mass mining method based upon the utilization of gravity flow of the blasted ore and the caved overlying waste rock mass. As with any other mining method, sublevel caving has advantages and dis¬advantages which must be carefully considered and evaluated. The major advantages of sublevel caving are …
Block Caving Mining Method
Block caving is a mining ore mining method in which deep hole or medium-deep hole drilling blasting technology is applied for caving at one time in a stage. The layout of ore blocks and extracting technology are generally similar to that of sublevel caving method with sill pillar and external force of drilling blasting is required for caving.
The future of sublevel caving is being assessed
When mining proceeds at ever greater depth, so do the challenges – rock stresses and costs. However, the latter are but two of several complex issues that must be addressed leading into the future. At the centre of it all is the impact that the mining method, sublevel caving, has on the mine.
Caving Underground Mining Methods (longwall, Sublevel caving…
2. Outline of Topic 7: Longwall Longwall in coal Longwall in Hard Rock Sublevel Caving Characteristics of the ore body and mining method Development Production Equipments Used Block Caving Introduction Historical evolution of the method Condition deposit Principles of the method Methodology of block caving Basic issues of …
Sublevel Caving
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, …
A New Combined Mining Method: The Stope Limit Length
To tackle the technical challenges of medium-depth mining in sharply inclined medium-thickness ore bodies, the concept of an induced caving crown pillar was introduced, which led to the development of temporary crown pillar-induced caving technology. Building upon this foundation, a combined mining method of crown-pillar …
Sublevel Stoping Underground Mining Methods
-in sublevels production when using sublevel caving-;-na base level or ore body, when it is used block caving, sublevel stoping and VCR. ... Choice of mining method; What determines the type of ...
Applied Sciences | Free Full-Text | Numerical Investigation of
Slope failure induced by sublevel caving mining is a progressive process, resulting in the large deformation and displacement of rock masses in the slope. Numerical methods are widely used to investigate the above phenomenon. However, conventional numerical methods have difficulties when simulating the process of progressive slope …
Digging deeper: Mining methods explained
Large scale mechanised mining methods we use include: long-wall mining, where a long wall of coal is mined in a single slice, usually by a large machine. sub-level-caving, where levels of the ore are blasted by …
Raise Caving—A Hybrid Mining Method Addressing Current Deep Cave Mining
Cave mining progresses to depths exceeding 1000 m and ore bodies situated in competent and strong rock masses are nowadays extracted by different cave mining methods. Widely applied caving methods in massive deposits are block and panel caving, inclined caving, and sublevel caving. All caving methods have in common …
Structural Parameter Optimization for Large Spacing Sublevel Caving …
Because the structural parameters of the sublevel caving mining method can directly. affect the ore recovery ratio and recovery ef ficiency, and then affect the overall technical.
(PDF) Topic 7: Underground Mining Methods Longwall Sublevel Caving
Topic 7: Underground Mining Methods Longwall Sublevel Caving Block Caving Hassan Z. Harraz [email protected] 2014- 2015 This material is intended for use in lectures, presentations and as handouts to students, and is provided in Power point format so as to allow customization for the individual needs of course instructors.
Sublevel Caving Method with Sill Pillar
Sublevel caving method with sill pillar is the mining process in which a level is divided into several sublevels, a bottom structure specifically used for ore removal is furnished at the …
Optimum Sublevel Height and Drift Spacing in Sublevel Cave Mining …
In September 2007, the mine decided to adopt the underground mining method, and started the shaft development for the sublevel caving mine with a production scale of 75,000 tons/year. Subsequently, in August 2012, the mine began partial stoping work. The sublevel height is divided into 13 and 14 m and the drift spacing is chosen at …
Sublevel caving
PRINCIPLES AND APPLICATION OF SUBLEVEL CAVING IN METALLIFEROUS MINING THERE is a wide selection of various underground mining methods which can be adapted to the local conditions and to the particular requirements of the orebody concerned and of the surrounding areas. If optimum results as regards production are to be achieved, a …