Sublevel Caving Mining Method Without Pillar
Raise caving: a novel mining method for (deep) mass mining
Currently, the methods commonly used in mining are the stratified filling method, the sublevel caving method without the sill pillar, the room and pillar mining method, and the natural caving ...
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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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Optimization of Structural Parameters of Stope without Sill Pillar …
X. Dong, H. W. Deng, Stope parameter optimization of sublevel caving without sill pillar in Xiadian gold mine. Mining technology, 2019.9 (3): 4-6. Recommended publications
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Optimum Sublevel Height and Drift Spacing in Sublevel Cave Mining …
Currently, the methods commonly used in mining are the stratified filling method, the sublevel caving method without the sill pillar, the room and pillar mining method, and the natural caving ...
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Optimization of Structural Parameters of Stope without Sill …
As a mining method with high mechanization, high safety and low operation cost, sublevel caving without sill pillar uses drift to cut ore body, and then uses mediu m deep …
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Type of the Paper (Article
instability brought to the fault by the sublevel caving method without the sill pillar is greater than that brought to the fault by the lower layer filling method under the premise of only changing the height of the sublevel. Keywords: coordinated mining; fault dynamic response; lower -layer filling method; mining impact; sublevel caving ...
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Experimental Study of the Inclined Slices Sublevel Caving Method …
Abstract: The orebody in Xiaoxingshan mining area of Xingshan iron mine is layered inclined thick.Originally, the sublevel caving method without sill pillar was used for mining with drift perpendicular to strike, resulting in high ore loss and dilution, serious underground pressure behavior at hanging wall side of drift, large amount of roadway support engineering, and so …
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Caving Method
The characteristics of the non-pillar sublevel caving method are that it carries out medium and deep hole drilling and muck ore in the mining roadway without special bottom structure, so that the stope structure is simple and the application is …
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Underground mining method natural support and caving
17. Room and Pillar Mining Method It is an underground mining method in which the ore is mine from the room and the pillars of ore are left to support the overlying strata Both development openings (entries) and exploitation openings (rooms) closely resemble one another. • Both are driven parallel and in multiples. • When connected by cross cuts, pillars are formed. …
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Improvement of sublevel caving without sill pillar
After the stope structure parameters, hole arrangement parameters, blasthole layout form, initiating mode and ore drawing mode of sublevel caving without sill pillar in Shenbu Copper …
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Caving Method, Classification and Application of the
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-tion to induce the natural caving of upper ore-rock, which will be subsequently released in one
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Topic 7: Underground Mining Methods Longwall …
Longwall (LW) The Longwall is a very old method, originated in coal mines in Europe in the 7th century. The most important application of Longwall relates to coal mining. Much of the production of ...
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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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Evaluation of different methods of pillar recovery in coal mining …
The room-and-pillar technique is a self-supporting mining method in which part of the ore is left unmined as pillars. To increase the mining efficiency, the pillars are later recovered partially or completely. This research aims at evaluating and comparing four methods of pillar recovery, namely, 'pocket and wing', 'open ending', 'split and fender', and 'Christmas …
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Stope Structural Parameters Design towards …
Early observations from industrial experiments indicate that the long axis size of the ore-drawing body is typically 2.5 to 3.0 times the short axis size. Therefore, it is recommended that the height of a single mining unit in …
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Structural Parameter Optimization for Large Spacing …
Because the structural parameters of the sublevel caving mining method can directly affect the ore recovery ratio and recovery efficiency, and then affect the overall technical ... parameters of sublevel caving without a sill pillar is that "the morphology of the caving body should be consistent with that of the drawn-out ore body". Jin et ...
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Underground Sub-level Caving Recommences at Big Bell
The sub-level caving mining methodology has considerable advantages over long-hole open stoping methods or up-hole benching methods typically used in the Australian gold sector. The progressive mitigation of natural cave filling allows for nearly full extraction of ore without a requirement for pillars.
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Numerical Simulation of Independent Advance of Ore
Journal of China University of Mining & Technology Vol.17 No.2 J China Univ Mining & Technol 2007, 17(2): 0295- 0300 Numerical Simulation of Independent Advance of Ore Breaking in the Non-pillar Sublevel Caving Method ZHOU Chuan-bo1, YAO Ying-kang1, GUO Liao-wu2, YIN Xiao-peng2, FAN Xiao-feng1, SHANG Ying1 1Engineering College, China …
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Investigation of Mining-Induced Fault Reactivation …
However, insufficient research has been carried out on the mechanism responsible for the reactivation of the faults in the case of metal mines mined using non-pillar sublevel caving. Non-pillar sublevel caving is a widely used mining method which is based on the utilization of gravity to generate a flow of blasted ore and caved rock waste ...
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Lost-ore mining-A supplementary mining method to 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 ...
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Structural Parameter Optimization for Large …
Because the structural parameters of the sublevel caving mining method can directly affect the ore recovery ratio and recovery efficiency, ... Sublevel caving without a sill pillar was adopted for the mining stage −500~−570 m in …
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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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Block Caving Mining Method, Application Of | SpringerLink
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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Improvement of sublevel caving without sill pillar
After the stope structure parameters, hole arrangement parameters, blasthole layout form, initiating mode and ore drawing mode of sublevel caving without sill pillar in Shenbu Copper Mine had been improved, ore loss and dilution ratio, unit consumption of explosive were reduced, production ability was increased, and good technico economical indexes were obtained.
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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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Caving Method, Classification and Application of the
Caving method is the ore mining method of filling the goaf with forced or natural caving wall rock to manage the ground pressure with the advance of the work face, without …
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Numerical Experimental Study on Ore Dilution in Sublevel Caving Mining
Sublevel caving is a large-scale underground mining method, which has been widely used in the world since the beginning of twentieth century. This is a top-down mining method that relies on blasting to break the ore and gravity to transport the ore [1, 2]. Ore drawing management is to draw ore according to the prescribed discharge tonnage or grade.
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The Influence of Different Sublevel Heights on the …
At present, when addressing the problem of fault stability in mines, most attention is paid to the study of the impact of a single mining method on faults. In order to study fault stability in mines more comprehensively, this …
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Design & Operating Principles in Caving Methods
Sub-Level Caving . 65 - 180 1500 – 50 000 7 - 17 . Block Caving . 300 - 2000 10 000 – 100 000 1 – 2.5 ~ 9$/t average Source: BMO Capital markets 2011 Global Metals and Mining …
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Production Scheduling in Sublevel Caving Method with …
Among underground mining methods, block caving, sublevel caving, sublevel stopping, cut and fill, and stope and pillar methods are usable for the mining of metallic reserves. The true optimum solution is guaranteed for the pit limit optimization and several computer packages are available to the industry.
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