scholarly journals MATCHING MACHINE DESIGN TO THE PRODUCTION PROCESS: A CASE STUDY IN THE INTEGRATED DESIGN OF MOBILE EQUIPMENT AND MINING METHODS

2011 ◽  
Author(s):  
Patrick F. R. Murphy ◽  
Laeeque K. Daneshmend
Keyword(s):  
Underground Mining ◽  
Integrated Design ◽  
Platinum Group Metal ◽  
Worker Safety ◽  
New Production ◽  
Materials Handling ◽  
Ground Support ◽  
Ore Bodies ◽  
Added Benefit ◽  
Mining Methods

Underground mining imposes very rigid constraints on mobile equipment design. The choice of a particular mining “method” – i.e. the specific mix of techniques for excavation, ground support, and materials handling – is greatly influenced by the nature of the ore body being exploited. Mining methods tend to be fairly conservative, relying upon well established and proven equipment designs. In order to improve worker safety and productivity, South African platinum mines have increasingly turned to mechanization. An added benefit of these mechanization efforts is that the nature of the mining can be modified based on the feasible equipment designs. These efforts have resulted in changes to the mining methods employed in South Africa’s narrow-reef platinum group metal (PGM) ore bodies, as well as the development of a suite of mobile equipment which enables implementation of the new production processes. This paper focuses on the design and development of one of these machines - a narrow-reef bulldozer suited to selective mining. The resulting machine is a miniature unmanned bulldozer and multipurpose crawler platform designed for narrow-vein mining applications, with integrated mechatronics and remote control capabilities. This paper will discuss the development of the machine and the applications for which it was designed.

scholarly journals Using Topographic Advantages in Formulating a Strategy to Access Ore Bodies at Ban Phuc Nikel Mine

2020 ◽  
Vol 174 ◽  
pp. 01013
Author(s):  
Hung Nguyen Phi ◽  
Thang Pham Duc
Keyword(s):  
Underground Mining ◽  
Mineral Deposit ◽  
Access Method ◽  
Near Surface ◽  
Ground Support ◽  
Mining Technique ◽  
Ore Body ◽  
Ore Bodies ◽  
Gain Access ◽  
Transport Potential

There are various types of underground mining that are categorized based on the kind of shafts used, the technique of extraction and the process used to get to a deposit. Development mining is composed of excavation almost entirely in (non-valuable) waste rock in order to gain access to the orebody. To start the mining, the first step is to make the path to go down. Development, the work of opening a mineral deposit for exploitation is performed. With it begins the actual mining of the deposit. Access to the deposit must be gained either by stripping the overburden, which is the soil and/or rock covering the deposit,to expose the near- surface ore for mining or by excavating openings from the surface to access more deeply buried deposits to prepare for underground mining. The type of underground mining technique used is typically based on the geology of the area, especially the amount of ground support needed to make mining safe. When using to exploit ore body by underground mining method, the textbook guide in universities of Vietnam had had 4 main strategies include: access by horizontal tunnel lines, access by incline shaft, vertical shaft and combination of above access method. In this study, we developed a solution outside of four above approaches, to take advantage of the topography, transport potential energy, and advantages when constructing sloped incline, backward from outside to inside.

Mobile Bearbeitung von Faserverbundstrukturen/Mobile machining of fiber-reinforced plastics

2017 ◽  
Vol 107 (09) ◽  
pp. 656-661
Author(s):  
H. Susemihl ◽  
C. Korth ◽  
C. Bremer ◽  
T. Brencher
Keyword(s):  
Worker Safety ◽  
Fiber Reinforced ◽  
New Production ◽  
Reinforced Plastics ◽  
Large Structures ◽  
Production Processes ◽  
Fiber Reinforced Plastics

Bei der Bearbeitung großer Strukturen dominieren aktuell Maschinen, deren Größe vom Bauteil bestimmt wird. Die hier beschriebene Technologie führt zu einer prozessbestimmten Auslegung der Anlage und damit zu neuen Produktionsprozessen. Dazu wird ein selbständig navigierendes Transportsystem mit Roboter und Mehrachs-Bearbeitungseinheit eingesetzt. Verschiedene Sub-Systeme gestatten es, die Genauigkeit der Positionierung, Bearbeitung und Personensicherheit zu gewährleisten.   Current machining trimming of large structures is done using machines of sizes determined by the parts’ dimensions. Instead, the technology described here permits a process driven design and thus new production processes. To achieve this, a self-navigating platform is equipped with a robot and a multi-axle-milling unit and been enhanced with sub-systems for navigation, referencing and worker safety.

Geodynamic Hazard Assessment for Tectonic Structures in Underground Mining of North Ore Bodies in the Oktyabrsky Deposit

2019 ◽  
Vol 55 (1) ◽  
pp. 77-87
Author(s):  
V. A. Uskov ◽  
A. A. Eremenko ◽  
T. P. Darbinyan ◽  
V. P. Marysyuk
Keyword(s):  
Hazard Assessment ◽  
Underground Mining ◽  
Tectonic Structures ◽  
Ore Bodies

scholarly journals Trends in Underground Mining

2021 ◽  
Vol 11 (4) ◽  
Author(s):  
Parra Paola O. ◽  
Marcos Quispe P. ◽  
Freddy Lobaton Z. ◽  
Adali Vela F. ◽  
Will Yucra C.
Keyword(s):  
Underground Mining ◽  
Base Metals ◽  
The World ◽  
Mining Methods

In this document, we will talk through information collected on all trends in mining in the underground environment as much as what happens in the world as or new machinery America provides the highest mining production in underground mining. We often discover opportunities for improvement in both productivity and costs. Of all these methods, braking is not only the most common, but also offers the largest share of overall production, nearly 50 percent. These underground mining methods are often determined by the deposits and the economics of mining and are therefore somewhat beyond the control of the operator(Trends in underground mining for gold and base metals | McKinsey, s. f.)

scholarly journals Sublevel stoping with applying artificial hardening stowing pillars for extraction of veins in complicated geotechnical conditions

2021 ◽  
Vol 6 (4) ◽  
pp. 252-258
Author(s):  
Sh. I. Khakimov ◽  
Sh. R. Urinov
Keyword(s):  
Rock Pressure ◽  
Underground Mining ◽  
Pressure Control ◽  
Underground Mines ◽  
Advantages And Disadvantages ◽  
Combined Use ◽  
Mining Machinery ◽  
Mining Methods ◽  
Mining Works ◽  
Sublevel Stoping

In the process of underground mining of deep levels rock pressure can appear in any form, creating a serious threat to the lives of miners, disrupting the normal course of mining works and reducing the efficiency of mining production. The solution of the problem of rock pressure control becomes very urgent for underground mines developing vein deposits at a depth of more than 250 m. The aim of the study is the development and justification of mining methods to provide safe and efficient mining of deposits in complicated mining and mechanical conditions. In this paper, the factors of redistribution and dangerous concentration of stresses in the mined ore mass were identified, the methods of rock mass management in complicated geotechnical conditions were studied, and their advantages and disadvantages were revealed. It was determined that the sublevel stoping with the combined use of existing methods of rock pressure control and applying selfpropelled mining machinery is currently one of the most promising method finding widening application scope. In the context of Zarmitan gold ore zone the options of technological schemes of the sublevel stoping method were considered, providing for a combination of different methods of rock pressure control, allowing to minimize the disadvantages of one method through using the advantages of other ones. We proposed sublevel stoping options with artificial polygonal pillars and with artificial columnar pillars, which allowed to reduce ore losses in inter-stope pillars, arch pillars, and secondary dilution. In addition, artificial pillars, taking compressive/tensile stresses, prevent their concentration and create safe conditions for extraction at adjacent and underlying levels.

Hierarchical fuzzy-AHP-based multi-criteria decision making approach for selection of underground metal mining method

2021 ◽  
Vol 15 (3) ◽  
pp. 405-420
Author(s):  
Bhanu Chander Balusa ◽  
Amit Kumar Gorai
Keyword(s):  
Decision Making ◽  
Underground Mining ◽  
Fuzzy Ahp ◽  
Hanging Wall ◽  
Ore Deposits ◽  
Mining Method ◽  
Metal Mining ◽  
Extrinsic Factors ◽  
Ore Deposit ◽  
Mining Methods

In the last few decades, many underground mining methods were proposed for extractions of ores. The decision-making for selecting the most suitable mining method for a typical ore depost depnds on various intrinsic and extrinsic factors (intrinsic – dip, shape, thickness, depth, grade distribution, RMR (rock mass rating) and RSS (rock substance strength) of ore, hanging wall, footwall, and extrinsic – recovery, dilution, safety, productivity, flexibility, capital). The present study aims to develop a hierarchical Fuzzy-AHP (FAHP) model for choosing the most suitable underground mining method for an ore deposit. The structure of the proposed hierarchical FAHP model consists of five levels. The level-1 of the hierarchy defines two variables (intrinsic factors and extrinsic factors). These are further classified into quantitative or qualitative nature of variable (listed in level-2). The criteria, sub-criteria, and mining method variables are listed respectively in Level 3, Level 4, and Level 5. For each level of the hierarchy, a fuzzy pair-wise comparison matrices are developed using the corresponding levels’ listed variables. These matrices at each level are subsequently used to determine the local and global weights of each variable. The global weights are used for prioritizing the different mining methods. The proposed hierarchical FAHP model was validated by considering the field data of two different ore deposits in India. The results showed that the most appropriate mining method predicted from the decision-making model and the adopted mining method for extracting the ore deposit are same in two case studied mines.

Frame mine structure for underground mining of thick ore bodies

2021 ◽  
pp. 11-18
Author(s):  
V. A. Eremenko ◽  
A. R. Umarov ◽  
Yu. P. Galchenko ◽  
N. A. Lipnitskiy
Keyword(s):  
Underground Mining ◽  
Ore Bodies

The Difference of Physiological Indicators of Ground and Underground Subway Workers: A Preliminary Field Study

2014 ◽  
Vol 670-671 ◽  
pp. 1608-1611
Author(s):  
Qing Guo Ma ◽  
Xiao Lin Zhou ◽  
Lun Zhao ◽  
Jun Bian ◽  
Wei Hui Dai
Keyword(s):  
Construction Projects ◽  
Safety Management ◽  
Underground Mining ◽  
Management Practice ◽  
Measurement Techniques ◽  
Potential Hazard ◽  
New Production ◽  
Mental Load ◽  
Physiological Measurement ◽  
Psychological States

Underground mining has traditionally been one of the most hazardous industries, and various accidents happen with high frequency in recent years, highlighting the need for explicit attention to safety management in the course of industrialization in China. Researchers and practitioners tend to overlook the physical and mental load of the front-line workers, which gives rise to the potential hazard in production. By investigating the workers physiological and psychological states, the research could enlighten management practice including formulating new production plan and reducing industrial hazards caused by fatigue, lagged responsiveness and misreading. The current study adopted physiological measurement techniques to study the differences of subway construction workers’ physiological and psychological states between two conditions—on the ground and underground, and contributed to the research on safety management of underground construction projects from human-oriented perspective.

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