Sublevel Caving Mining Method With Pillar
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 geomechanical to the black caving …
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A global review of recovery, dilution and draw …
Abstract: Sublevel caving (SLC) has previously been regardedas a high dilution and low recovery mining method requiring specific orebody geometry and rock mass conditions to be successful. Progress in the past 20 years at numerous …
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Structural Parameter Optimization for Large Spacing …
effective measure for the green mining of caving mines. Keywords: sublevel caving; numerical simulation; physical model; structural parameter; green mining 1. Introduction Non-pillar sublevel caving offers the advantages of simple operation, high-intensity mining, high mechanization degree, safety and reliability, and relatively low mining ...
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Sublevel Shrinkage (SLSh) Mining—A State-of-the-art Review
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 drifts orientated in a longitudinal or transverse way in the orebody. Fan drilling and blasting is done from the production drifts, from where the ore is then drawn. While …
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Underground Mining Methods and Equipment
Keywords: Mining method, underground mining, room-and-pillar mining, sublevel stoping, cut-and-fill, longwall mining, sublevel caving, block caving, backfill, support, ... major caving methods are: • Longwall mining • Sublevel caving • Block caving Longwall mining is used in horizontal, tabular deposits (mainly coal), while the others ...
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Block Caving Mining Method
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 method belongs to one-step mining, which is characterized by caving at one time in the whole stage height without sublevels.
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(PDF) Sublevel Shrinkage (SLSh) Mining—A State-of-the-art
The results of this study are helpful for The shrinkage mining method is an underground method like sublevel caving but with a continuous backfilling operation from the top.
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Sublevel caving by pillar extraction. Final report
The design and feasibility analysis of the Sublevel Caving by Pillar Extraction mining method are described. It is a conceptual mining method devised toward the objective of improving …
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Choosing an Underground Mining Method
3) For caving methods, the available techniques are sublevel caving and block caving. Due to the uniqueness of each ore deposit, the variations on each of these methods are nearly limitless. It is impossible to include even the major variations in this chapter; the goal of this chapter is to present the principles as a guide to the mining ...
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Stope Structural Parameters Design towards Green and Deep Mining …
Therefore, it is recommended that the height of a single mining unit in the non-pillar sublevel caving method should be 2.5 to 3.0 times the width. Furthermore, due to the characteristics of ore recovery in sublevel caving, the traditional ellipsoid theory suggests that the drawing ellipsoids must intersect to ensure sufficient ore recovery ...
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Temporary Roof Pillar Cyclic Induced Collapse: Beam
This study explores the principles of beam mechanics in the context of the combined mining method of roof pillar induction caving and non-pillar sublevel caving. Its objective is to determine optimal structural parameters for temporary pillars and induced caving step distance, thereby offering vital mechanical guidance for the implementation of this new …
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(PDF) The Influence of Different Sublevel Heights on the …
For example, the sublevel caving method without the sill pillar and the lower-layer filling method of coordinated mining can be used to analyze the dynamic response law of the fault, as well as ...
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Structural Parameter Optimization for Large Spacing Sublevel Caving …
Non-pillar sublevel caving offers the advantages of simple operation, high-intensity mining, high mechanization degree, safety and reliability, and relatively low mining costs [1,2,3,4].Therefore, it has been widely used in ore mining at home and abroad [].The purpose of mining is to discharge ore under the overburden, leading to a large loss coefficient and dilution ratio [6,7].
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Sublevel Caving Method Without Sill Pillar
Sublevel Caving Method Without Sill Pillar Ren Fengyu1 and Xu Kuangdi2 1School of Resources and Civil Engineering, Northeastern University, Shenyang, China 2Chinese Academy of Engineering, Beijing, ... The mining method is shown in …
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Sublevel Caving Method with Sill Pillar | SpringerLink
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 of each sublevel, and stoping of ore proceeds from the top sublevel to the …
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Problems in the application of sublevel caving method in …
The non-pillar Sublevel Caving Method is a commonly used mining technique throughout the world, because it can maximize the net production rate, even for low-grade orebodies.
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[PDF] Improvement of sub-level caving mining methods …
Purpose. To improve of the sub-level caving mining methods during mining of deposits of high-grade iron ores by applying a rational mode and intensifying the ore drawing. Methodology. It included an analysis of scientific literature, design documentation and the practice of mining of deposits of high-grade iron-ores in complex geomechanical conditions of deep horizons of …
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Strategic sill pillar design for reduced hanging wall …
Based on the parameters of the case study mine, the optimal location of the sill pillar is on level 5 or 6 in a 15-level mine. However, this could vary under different mining and …
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Sublevel caving | Britannica
Other articles where sublevel caving is discussed: 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…
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Optimum Sublevel Height and Drift Spacing in Sublevel Cave Mining …
Weak rock mass and poor flow of material can cause excessive ore loss and dilution in sublevel caving. This paper proposes a method to establish design parameters for an inclined deposit within a weak rock mass and evaluates its effectiveness through a case study. In order to solve the problem of low production capacity and poor safety conditions of sublevel …
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Mathematical Programming Application in Sublevel Caving …
Among all underground mining methods, the sublevel caving method is a common method with moderate development requirements, a high production rate, and a high degree of mechanization and flexibility. ... using linear programs (LP) to plan sublevel stoping in a copper mine and room-and-pillar in a coal mine, respectively. All these models ...
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Caving Method, Classification and Application of the
The induced caving method, proposed by Chinese scholars, is a new mining method that organically combines the natural caving method with the non-pillar sublevel …
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Sublevel Caving by Pillar Extraction. Final Report. | National
The design and feasibility analysis of the Sublevel Caving by Pillar Extraction mining method are described. It is a conceptual mining method devised toward the objective of improving mining techniques for extraction of deep coal occurring in seams of thicknesses greater than 12 feet. ... The conclusions of the study are that the Sublevel ...
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Caving Method, Classification and Application of the
world, which has become the mining method with the highest underground production effi-ciency. The induced caving method, proposed by Chinese scholars, is a new mining method that organically combines the natural caving method with the non-pillar sublevel caving method. It is characterized by continuous excavation of induc-
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Sublevel Caving Method with Sill Pillar | SpringerLink
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 of each sublevel, and stoping of ore proceeds from the top sublevel to the bottom sublevel (Fig. 1).It is also called sublevel caving method with bottom structure.
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A global review of recovery, dilution and draw control in …
sublevel caving mines AD Campbell Beck Engineering Pty Ltd, Australia Abstract Sublevel caving (SLC) has previously been regarded as a high dilution and low recovery mining method requiring specific orebody geometry and rock mass conditions to be successful. Progress in the past 20 years at numerous operations has broken this misconception.
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(PDF) Underground mining Methods
The mining method used will depend on the characteristics of the orebody, particularly thickness
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Sublevel caving
Int. J, Rock Mech. Min. Sci. Vol. 3, pp. 129-153. Pergamon Press Ltd. 1966. Printed in Great Britain SUBLEVEL CAVING* I. JANELID and R. KvhPm Department of Mining and Mine Surveying, Royal Institute of Technology, Stockholm, Sweden (Received 1 November 1965) A~traet--The following article contains a summary of the results obtained by theoretical …
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The future of sublevel caving is being assessed
Although sublevel caving is a method that allows plenty of scope, flexibility and relatively high ore yield, its complexity increases as the mining depth increases. ... One of several possible routes is the establishment of more energy-bearing pillars in the mining areas, similar to the pillar that was established in Block 22 and has ...
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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,
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