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ventilation arrangement in subleval caving mining layout
Ventilation requirements of cave mines - University of
This paper provides design guidelines to arrive at ventilation requirements over life-of-mine to support unconstrained production and the health and safety of workers underground. Keywords: ventilation, block cave, sublevel cave, design, requirements.
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Transition and Optimization of the Henderson Mine Ventilation
Production LevelNorth PanelTruck Haulage Level VentilationThe 7065 level is the truck haulage level for Henderson mine. Fresh air for the truck level flows through raises and ramps that are fed from the No. 2 and No. 3 intake shafts. The fresh air then courses through the different truck loops and into the truck chutes as shown in Figs. 7 and 8. As the trucks dump into the crusher, the dust is sucked up a...
Australian Centre for Geomechanics Conference Paper:
One of the engineering disciplines requiring a unique approach for block and sublevel cave mining is ventilation. Ventilation designs must ensure production ramp-up is met during
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Underground production scheduling with ventilation and
2022年1月13日 This study focuses on two bulk mining methods, sublevel stoping and sublevel caving, which have limited selectivity and are therefore associated with higher
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Ventilation planning considerations for the Carrapateena
•Push-pull ventilation strategy •Positively pressurise levels to manage leakage from cave •High VRT’s and Radon Management Key Ventilation Drivers •Radon management
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Ventilation planning considerations for the Carrapateena Sublevel
This paper explores the feasibility and on-going operational ventilation planning for the Carrapateena Project. Although natural occurring radon emanation from strata is common
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Block cave optimisation a value driven approach - University
Cave footprint finder. CFF is a series of Datamine macros and Microsoft ExcelTM spreadsheets which have the advantage of being transparent and easily auditable. The CFF takes into account rock mixing and can be used for block caves, front caves or panel caves. AMC applies a different process for sublevel caving.
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Design Operating Principles in Caving Methods - COSMO
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 Conference. Average productivity, daily production and relative mining cost associated with various mining methods from mines using such methods as their
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Rock fragmentation variations with increasing extraction ratio
2021年12月30日 1. Introduction. Sublevel caving (SLC) is a large-scale mining method primarily used in orebodies with steep dip and large vertical dimensions [Citation 1].As in other caving methods, the function and efficiency of SLC depends on the properties of the orebody and the overlying waste rock [Citation 1].The blastholes are drilled upwards, in
获取价格Underground Mining Methods and Equipment - EOLSS
ventilation, mining machinery, excavation, cutting, drilling, loading, hauling Contents 1. Underground Mining Methods 1.1. Classification of Underground Mining Methods 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 ...
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Underground Mining Methods and Equipment - EOLSS
ventilation, mining machinery, excavation, cutting, drilling, loading, hauling Contents 1. Underground Mining Methods 1.1. Classification of Underground Mining Methods 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 ...
获取价格Block Cave Mine Ventilation: Research Findings IntechOpen
2022年5月29日 The primary objective of this research is to provide practical mine ventilation engineering tools (i.e., cave resistances and pollutant emission rates) to model and predict adequate airflows and pressure drops across the cave with respect to cave propagation in underground block or panel cave mines. We used several research
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Production scheduling optimisation for sublevel stoping mines
2020年10月1日 Determination of the underground mining envelope and stope layout is one of the most important aspects in the field of underground mining design and production planning. The main purpose of this step is the aggregation of several blocks in a specific region into stopes while taking several constraints into consideration ( Sotoudeh et al.,
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Mathematical Programming Application in Sublevel Caving
2021年8月9日 Shenavar et al. [4] applied the IP model using the MATLAB programming platform to formulate the long-term production scheduling for a 2D representation of a real sublevel caving mine, the Golbini bauxite mine in Iran. An operating period of 8 years was con-sidered in the production schedule model.
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Ventilation requirements of cave mines - University of
A sublevel cave mine involves drilling and blasting between mining levels and uses a top-down approach to extract the orebody shown in Figure 2. Sublevel cave mines can start to generate revenue earlier at lower upfront costs. However, production rates achieved in sublevel caving operations are typically lower than for block cave mines.
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Underground Mining Methods and Equipment - EOLSS
ventilation, mining machinery, excavation, cutting, drilling, loading, hauling Contents 1. Underground Mining Methods 1.1. Classification of Underground Mining Methods 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 ...
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(PDF) Instability mechanism of surrounding rock chain structure in ...
2021年7月1日 After the first sublevel mining, fracture and caving in the mid dle and lower part of immediate roof, and caving height was 1.2cm. The lower end of the rock beam at the fracture position is the ...
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Critical Aspects of Longwall Top Coal Caving Method for
2022年6月4日 Wu J, Qin Y, Zhai M (1999) Mining safety of longwall top-coal caving in China. In: The 8th US mine ventilation symposium. Google Scholar Wang J, Yu B, Kang H, Wang G, Mao D, Liang Y, Jiang P (2015) Key technologies and equipment for a fully mechanized top-coal caving operation with a large mining height at ultra-thick coal seams.
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Underground production scheduling with ventilation and
2022年1月13日 The choice of an appropriate mining method is based on numerous factors such as ore strength, depth, shape, and size, among other characteristics unique to each deposit (Nieto 2011).This study focuses on two bulk mining methods, sublevel stoping and sublevel caving, which have limited selectivity and are therefore associated with higher
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Carrapateena block cave mine design and planning: feasibility
Figure 6 Proposed Carrapateena underground mine ventilation design layout Ventilation requirement is assessed based on the equipment, radon control, dust control, heat and other contaminants in underground mine environment. Ventilation modelling concluded it is required to have 900 m3/s at the peak period of the block cave development. The air ...
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(PDF) Instability mechanism of surrounding rock chain
2021年7月1日 After the first sublevel mining, fracture and caving in the mid dle and lower part of immediate roof, and caving height was 1.2cm. The lower end of the rock beam at the fracture position is the ...
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Critical Aspects of Longwall Top Coal Caving Method for
2022年6月4日 Wu J, Qin Y, Zhai M (1999) Mining safety of longwall top-coal caving in China. In: The 8th US mine ventilation symposium. Google Scholar Wang J, Yu B, Kang H, Wang G, Mao D, Liang Y, Jiang P (2015) Key technologies and equipment for a fully mechanized top-coal caving operation with a large mining height at ultra-thick coal seams.
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Underground production scheduling with ventilation and
2022年1月13日 The choice of an appropriate mining method is based on numerous factors such as ore strength, depth, shape, and size, among other characteristics unique to each deposit (Nieto 2011).This study focuses on two bulk mining methods, sublevel stoping and sublevel caving, which have limited selectivity and are therefore associated with higher
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Carrapateena block cave mine design and planning: feasibility
Figure 6 Proposed Carrapateena underground mine ventilation design layout Ventilation requirement is assessed based on the equipment, radon control, dust control, heat and other contaminants in underground mine environment. Ventilation modelling concluded it is required to have 900 m3/s at the peak period of the block cave development. The air ...
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Sublevel Caving Method with Sill Pillar - Springer
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 ...
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Sublevel Caving Production Scheduling Encyclopedia MDPI
2021年8月27日 Production scheduling determines the most beneficial mining sequence over the life of mine. Developing a schedule that meets all mining aspects can substantially reduce mining costs and increase profitability. Among all underground mining methods, the sublevel caving (SLC) method is a common method with moderate development
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Mathematical Programming Application in Sublevel Caving
2021年6月17日 Production scheduling determines the most beneficial mining sequence over the life of a mine. Developing a schedule that meets all mining aspects can substantially reduce mining costs and increase profitability. Among all underground mining methods, the sublevel caving method is a common method with moderate development
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IOP Conference Series: Earth and Environmental Science
adopts block caving scheme of sublevel. The maximum caving height is 370m and the average is 200m. Caving height of world block caving mine is shown in table 1. Based on the engineering of relevant experience, caving height of Pulang copper mine is rational. Tab.1 Caving height of world block caving mine Mines Caving height Teniente mine
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Case Studies of Comprehensive Gas Control Method during
2021年7月22日 Slicing fully mechanized caving mining is a standard high-efficiency mining method for ultrathick coal seams. However, the effectiveness of gas control has accentuated the difficulty in fully mechanized top coal caving of low-permeability ultrathick coal seams. This study focused on mining the No. 9-15 coal in Liuhuanggou Coal Mine,
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Investigation of Gas and Airflow Distribution in a Block Cave Mine
2022年5月12日 Block cave mining method poses unique ventilation challenges compared to other underground metal mining methods. This research study focuses on assessing the airflow behavior in regulated airflow distribution systems by developing a 1:100 scaled block cave experimental model and a numerical model. This study also investigated gas flow
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ventilation arrangement in subleval caving mining layout
avalanche top country rock Sublevel Caving Technique - Free download as PDF File (.pdf) or read online for free. An underground mining method used in large in combination with a mine ventilation network solver and while making top work propelling fairly close to each other mining starts at the top of the orebody and develops downwards.
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An overview of the Nordic mine ventilation system - ResearchGate
2020年6月10日 Schematic of leve l ventilation layout i n the Nordic ... which use the sublevel caving mining method. ... The existing mine ventilation system was designed for the current production rate of 0.8 ...
获取价格Energies Free Full-Text Review of Underground Mining
2022年12月23日 The caving methods are commonly applied in massive underground deposits, highlighting the use of block and sub-level caving. Block caving is an underground method commonly applied in Chile [ 33 ], used in important copper deposits such as the El Teniente mine, Salvador mine, Andina mine, and currently in transition
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Optimization of Trackless Equipment Scheduling in ... - Springer
2020年8月12日 The drawpoints can be used for production for a long time. So, the most important part of its scheduling is the fleet arrangement. For sublevel caving method, mining starts at the top of the orebody and develops downwards with the processes of drilling, charging, blasting, ventilation, and loading.
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