scholarly journals Industry Survey on the Current State of Stope Design Methods in the Underground Mining Sector

Energies ◽  
2021 ◽  
Vol 15 (1) ◽  
pp. 240
Author(s):  
Mateusz Janiszewski ◽  
Sebastian Pontow ◽  
Mikael Rinne

Stope design is a core discipline within mining engineering. This study analyzes the current state-of-the-art of stope design through a survey addressed to mining industry professionals. In stope design research the dominance of empirical methods has slowly shifted towards numerical methods. Recent advancements have mostly focused on the development of stope optimization algorithms. The survey consisted of 19 questions and was distributed to stope design experts via email, LinkedIn messages, and the Mining Industry Professionals network forum. In total, 36 responses of satisfying quality from 20 countries were received and analyzed. No dominance of a single stope design method was recognized. Empirical methods and personal expertise are still used widely. However, a readiness for change in stope design practice was indicated in 87% of responses. The current needs of the stoping-based underground mining sector are to increase the amount of geotechnical data, automate stope design and implement related software, and integrate these into general mine planning. According to 70% of the participants, acquired geotechnical data should be available within three days to be employed in design practice. The industry is ready to implement more efficient stope design methods if they offer results proven in case studies.

Author(s):  
Lluís Sanmiquel ◽  
Marc Bascompta ◽  
Josep M. Rossell ◽  
Hernan Anticoi

Occupational accidents in the Spanish mining industry have been substantially reduced over the last decades. However, the incidence rate shows higher values than other leading mining countries. In this regard, the research carried out reveals the factors influencing the high incidence rates of the Spanish mining sector, based on three scenarios: underground mining (UG), quarries and open pit mining (OP) and mineral processing plants (PP). The three most common types of accident for each scenario have been determined, considering the accidents in Spain between 2009 and 2018. The analysis also includes the main deviations, and physical activities that the injured worker was carrying out at the time of the accident. Besides, a model to predict the number of accidents based on the lost working days is also presented together with the incidence and severity risk index adjusted by the number of employees and their worked hours, respectively, in each scenario. These finding can be relevant to define the most effective measures and policies to reduce the number of accidents in the mining sector.


Drones ◽  
2020 ◽  
Vol 4 (3) ◽  
pp. 34 ◽  
Author(s):  
Javad Shahmoradi ◽  
Elaheh Talebi ◽  
Pedram Roghanchi ◽  
Mostafa Hassanalian

This paper aims to provide a comprehensive review of the current state of drone technology and its applications in the mining industry. The mining industry has shown increased interest in the use of drones for routine operations. These applications include 3D mapping of the mine environment, ore control, rock discontinuities mapping, postblast rock fragmentation measurements, and tailing stability monitoring, to name a few. The article offers a review of drone types, specifications, and applications of commercially available drones for mining applications. Finally, the research needs for the design and implementation of drones for underground mining applications are discussed.


2014 ◽  
Vol 59 (4) ◽  
pp. 971-986 ◽  
Author(s):  
Krzysztof Tajduś

Abstract The paper presents the analysis of the phenomenon of horizontal displacement of surface induced by underground mining exploitation. In the initial part, the basic theories describing horizontal displacement are discussed, followed by three illustrative examples of underground exploitation in varied mining conditions. It is argued that center of gravity (COG) method presented in the paper, hypothesis of Awierszyn and model studies carried out in Strata Mechanics Research Institute of the Polish Academy of Sciences indicate the proportionality between vectors of horizontal displacement and the vector of surface slope. The differences practically relate to the value of proportionality coefficient B, whose estimated values in currently realized design projects for mining industry range between 0.23r to 0.42r for deep exploitations, whereas in the present article the values of 0.33r and 0.47r were obtained for two instances of shallow exploitation. Furthermore, observations on changes of horizontal displacement vectors with face advancement indicated the possibility of existence of COG zones above the mined-out field, which proved the conclusions of hitherto carried out research studies (Tajduś 2013).


2021 ◽  
Vol 237 ◽  
pp. 04013
Author(s):  
Zhihao Zhang ◽  
Xidong Ma

In order to reduce the ecological damage and economic loss caused by mountain torrent disasters in the flooded basin, it’s very important to realize the self-repair of the ecosystem in a short time. Based on the analysis of the causes of mountain torrents, this paper summarizes three main parts of ecological restoration in the river basin, including rainwater storage, Sedimentation and wetland conservation. Taking a research base in Wenling, Zhejiang Province as an example, this paper also discusses the design methods of the landscape inside mountain torrent basins based on ecological restoration from these parts above. Finally, these methods were obtained and applied in design practice, providing more solutions and theoretical references for the ecological restoration design in the future.


2021 ◽  
Author(s):  
◽  
Edward Johnson

<p><b>The gold mining industry in Ghana is characterised by complexity in terms of its extended/sequential operations, its system-wide reach, its multiple stakeholders, and the variety of formal and informal organisations that constitute the industry. Perceptions of the industry differ considerably amongst stakeholders, depending on their stakes and interests, knowledge, understanding, involvement and agency within or without the sector. Studies of the industry to date have overlooked these diverse viewpoints and used limited-scope, single-frame analyses. However, they have highlighted wide-ranging industry issues that impact the diversity of stakeholders, which could benefit from a fuller and more comprehensive analysis.</b></p> <p>This study addresses this need by adopting a multi-framing systems-based approach. Data was examined and analysed through a variety of systems-based lenses and frames, including a stakeholder analysis (SA) frame, a causal loop modelling (CLM) frame, supply chain analysis (SCA) frame and the Theory of Constraints (TOC) Thinking Processes analytical frames lenses. First the Current Reality Tree (CRT) tool of the Theory of Constraints (TOC) was used to synthesise information from the literature examined, providing an initial provisional CRT model. Interview data was collected by sharing and seeking feedback to the CRT model at multiple levels of the industry, giving voice to stakeholders throughout the sector. Subsequent analysis used all the modelling frameworks mentioned above in a multi-framing analysis.</p> <p>In particular, the evaporating cloud (EC) tool from TOC was used to structure and develop potential solutions to conflict highlighted by the literature review, the SA, SCA and CLM. Building on this, a final CRT was developed, and a goal tree (GT) used to design the desired future whilst employing the future reality tree (FRT) to test the plausibility of solutions from the EC to deliver the desired future. The prerequisite tree (PRT) was then used to identify obstacles and intermediate objectives that must be overcome for successful transition to the desired future.</p> <p>Insights from the research shows a desire by multi-national large scale-gold mining companies and government alike to minimise adverse impacts and maximise the sector’s outcomes for key stakeholders, including those at the community level. However, the research has documented many instances of actions taken to address issues and improve outcomes that have instead resulted in unresolved dilemmas and paradoxes, failing to achieve desired outcomes.</p> <p>A number of factors have been identified as being responsible for these situations. Key amongst them is a limited understanding to deliver desired outcome for stakeholders without compromises, a focus on short-term goals, no collective effort, and arms-length/win-lose relationships amongst the Ghanaian stakeholders of the industry.</p> <p>The study’s concluding findings and results allow decision makers to benefit significantly from the study through its recommendations and showcasing of tools that may allow them to make sound decisions and address endogenous and exogenous cause-effect relationships limiting desirable outcomes from actions taken.</p> <p>Theoretical and knowledge-based contributions are made by conceptualising and offering evidence for three key factors or dimensions that can explain a significant number of issues limiting desirable outcomes for stakeholders of the gold mining industry. These include difficulty to transition from theory (espoused aims) to practice, a relative focus on local optima (silo thinking), poor monitoring (lack of evaluation), and a control culture. Methodological contributions are made by demonstrating the application of a multi-framing approach in a more organic and iterative manner as opposed to its use in a designed sequence, working down through layers of various systemic levels of an industry (in this case, the gold mining industry in Ghana). By so doing, the study builds on and extends the practicality of the multi-framing approach and stimulates further research in the field.</p> <p>In terms of its contribution to practice, the study provides Government, political and mining sector policy decision makers, and other interested actors, with a platform for understanding the sector in order to support their decision making about the industry to ultimately improve outcomes for key stakeholders. In particular, the study allows mining sector policy decision makers and other stakeholders to recognise complexity, uncertainty and conflicts that are embedded in the mining system and in their everyday decision-making activities about the industry. It also allows these stakeholders to become more aware that such issues can be addressed and improved by identifying and focusing on one or few underlying causes.</p> <p>This thesis draws on systems-based frameworks drawn both from functional management, for example, the supply chain and value chain frameworks of operations management and the stakeholder framework of strategic management, and from the broad domain of systems thinking (ST) and systems-based methodologies; and then focuses on the intersection of these frameworks in relation to the gold mining sector in Ghana. Due to the wide range of techniques applied, none are over-explored, creating potential for further research. On the other hand, with regard to explanations, depending on background, practitioners, and researchers familiar with some techniques may consider those sections over-explained. The researcher has sought a balance for the purpose of this study. Whilst limiting the scope of this work has been necessary in the context of doctoral study, topics ripe for future research are set out in the conclusion.</p>


2014 ◽  
Vol 32 (4) ◽  
pp. 315-330 ◽  
Author(s):  
Michelle C. Brennan ◽  
Alison J. Cotgrave

Purpose – Despite the surge of interest in construction sustainability and the many Government initiatives encouraging reform in the UK construction industry (CI), the prevalence of sustainable development (SD) in the industry is still largely lagging behind that of other industries. Given the amount of focus and activity identified nationally in this area, the purpose of this paper is to investigate the reasons why this is not being translated into action and to seek counsel from industry professionals as to how they believe change can be achieved with a particular focus on how they believe higher education institutions (HEIs) can contribute. Design/methodology/approach – An explorative, qualitative study using three focus groups was of construction professionals. Findings – Despite a lack of action, many in industry support sustainability and actively attempt to engage in sustainable practices but a number of barriers preclude successful implementation. Government initiatives are having a positive impact, with participants believing that both Government and HEIs are imperative in driving the sustainability agenda forward. Research limitations/implications – Whilst limited in scale, this paper highlights the current state of the CI in relation to SD and evidences that progress is being made albeit slowly. The findings may help both Government and HEIs alongside industry in achieving how this can be overcome. Originality/value – Previous research in this area has generally adopted a quantitative approach. Adopting a qualitative approach provides a more in depth view as to why the status quo remains with regards to SD in the CI.


Polar Record ◽  
2020 ◽  
Vol 56 ◽  
Author(s):  
Lill Rastad Bjørst

Abstract This study aims to understand the emotional labour and relationship building in connection to the expected mining industry in Greenland. Greenland mining is often portrayed as something that could create an economic basis for national independence which makes politicians curious about what a potential “partnership” could make possible. Envisioning future relationships (in debates about mining in Greenland) also set the framework for reinterpretation and redefinition of the past, to give meaning to promised new development; hence, this kind of future-making tends to be contested. The analysis centres around stories of what could be (if Greenland really was a place of mining), and the theoretical framework makes use of Ahmed’s and Wetherell’s interpretations of affective economies. Thus the study discusses emotional labour with a special focus on partnership, emotions and filtration, while visiting affective scenes and sites related to the mining of Greenland’s minerals. Greenland’s current position as a state in formation, while still reconciling with experiences from the past, affects relationship building, the openness to flirtation, and sometimes creates conflicts and hieratical structures between the potential partners to be.


2020 ◽  
Vol 10 (20) ◽  
pp. 7221
Author(s):  
Łukasz Bołoz ◽  
Witold Biały

The article concerns the condition of automation and robotization of underground mining in Poland. Attention has been focused on the specific character of the mining industry. This limits the possibility of using robotization, and sometimes even the mechanization of certain processes. In recent years, robotic and automated machines and machine system solutions have been developed and applied in Poland. They are autonomous to a various degree, depending on the branch. The type of automation and artificial intelligence depends on the specific use. Some examples presently being used include the MIKRUS automated longwall system and autonomous device(s) for breaking rocks or mining rescue work. In Poland, fully automated plow systems produced by foreign companies are also used. Companies in Poland and international research centers are also actively engaged in the development of underwater and space mining. where robotization is of key importance. Research is also being undertaken by Robotics in Mining, euRobotics and PERASPERA as well as Space Mining Conference.


2020 ◽  
Vol 6 ◽  
Author(s):  
Kilian Gericke ◽  
Claudia Eckert ◽  
Felician Campean ◽  
P. John Clarkson ◽  
Elias Flening ◽  
...  

Abstract Supporting designers is one of the main motivations for design research. However, there is an ongoing debate about the ability of design research to transfer its results, which are often provided in form of design methods, into practice. This article takes the position that the transfer of design methods alone is not an appropriate indicator for assessing the impact of design research by discussing alternative pathways for impacting design practice. Impact is created by different means – first of all through the students that are trained based on the research results including design methods and tools and by the systematic way of thinking they acquired that comes along with being involved with research in this area. Despite having a considerable impact on practice, this article takes the position that the transfer of methods can be improved by moving from cultivating method menageries to facilitating the evolution of method ecosystems. It explains what is understood by a method ecosystem and discusses implications for developing future design methods and for improving existing methods. This paper takes the position that efforts on improving and maturing existing design methods should be raised to satisfy the needs of designers and to truly support them.


2020 ◽  
Vol 1 (4) ◽  
pp. 360-365
Author(s):  
T. S. Titova ◽  
J. A. Moroz

The subject of the study is the technical and environmental calculation of key parameters for equipping a contrailer terminal. The relevance of the work is related to the practical need to improve the organization of working conditions for employees of the terminal and warehouse facility as a complex technosphere object, as well as to ensure the rational operation of loading and unloading equipment. These aspects are crucial for the subsequent design of the terminal in terms of the number of full-time jobs and the required number of purchased/leased equipment, which determines the importance of management decisions at the initial, pre-project stage. There are two blocks of calculation — environmental and technical, the results of which can later be used in the preparation of an estimate and financial plan for the design of a complex technosphere object-a cargo (contrailer) terminal. Used analytical, design methods, theories of warehouse systems by O.B. Malikov, principles of technosphere safety. The calculation of the number of loading and unloading machines of the Kalmar type of the TR618i series was performed, as well as the necessary number of luminaires with fluorescent lamps to create a given standard illumination, and their location in the working area of the terminal’s operating space was determined. The calculation the number of loading and unloading machines required to ensure its smooth operation, and their quality indicators for the future volumes of cargo handling. The calculation of workplace illumination as a condition for ensuring technosphere safety and ergonomics requirements was also performed. It is noted that the performed environmental and technical calculations may be complicated by nested assessment and design methods aimed at assessing the current state of the terminal and the prospects for its further development/modernization.


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