scholarly journals The impact of equipment productivity and pushback width on the mine planning process

2020 ◽  
Vol 120 (10) ◽  
Author(s):  
A.S. Araya ◽  
M. Nehring ◽  
E.T. Vega ◽  
N.S. Miranda
Keyword(s):  
Planning Process ◽  
Mine Planning ◽  
Open Pit ◽  
Open Pit Mining ◽  
Capital Costs ◽  
Planning Processes ◽  
Equipment Utilization ◽  
The Impact ◽  
Selection Of

SYNOPSIS Conventional mine planning processes result in the selection of pushback widths that maximize equipment productivity. This paper challenges the current notion that pushback width should be set at the distance that assures maximum equipment productivity. A hypothetical case study is presented, which shows that the value of a project may increase beyond that determined by traditional planning practices. It was found that it may be better to deploy more aggressive mining strategies, which are likely to result in greater operational complexity and thus reduced equipment productivity. A higher equipment productivity, which often corresponds to wider (and therefore a lower number of) pushbacks, will also often result in later ore extraction and require higher capital costs. Keywords: open pit mining, pushback width, mine planning, schemes of exploitation, mining rate, equipment utilization.

scholarly journals Multi-Criteria Analysis for the Selection of the Optimal Mining Design Solution—A Case Study on Quarry “Tambura”

Energies ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 3200
Author(s):  
Branimir Farkaš ◽  
Ana Hrastov
Keyword(s):  
Decision Making ◽  
Multiple Criteria Decision Making ◽  
Open Pit ◽  
Design Solution ◽  
Mine Design ◽  
Promethee Ii ◽  
Mining Design ◽  
Quarry Mine ◽  
Selection Of

Mining design is usually evaluated with different multiple-criteria decision-making (MCDM) methods when it comes to large open pit or underground ore mines, but it is not used on quarry sites. Since Croatia is mostly mining stone, the implementation of such methods in decision making of the quarry mine design is imperative but left out. In this paper, the PROMETHEE II and AHP decision-making methods are implemented on the quarry site to find out the best final quarry design contour. By implementing the MCDM methods, the best quarry model was chosen based on 22 different criteria parameters out of three final quarry designs. The chosen model is not only financially sound but also has the least environmental impact.

ENVIRONMENTAL ISSUES OF SURFICIAL URANIUM DEPOSITS: OUM DHEROUA CASE STUDY (ISLAMIC REPUBLIC MAURITANIA)

2021 ◽  
Author(s):  
Mariia Kurylo ◽  
Ivan Virshylo
Keyword(s):  
Clean Energy ◽  
Raw Material ◽  
Open Pit ◽  
Open Pit Mining ◽  
Material Base ◽  
Uranium Deposits ◽  
Islamic Republic ◽  
Natural Ecosystems ◽  
Lower Estimation

Uranium deposits and resources are considered as an important raw material base for the implementation of scenarios for the green and clean energy transition. Traditionally discussed risks of potential environmental impacts of Uranium projects development could be subdivided by deposit type. Surficial type mineralization connected to the calcretes in shallow paleovalleys or playas has many specific features which might be analysed separately. Case study of Oum Dheroua Uranium project in the Islamic Republic of Mauritania shows an unexpected lower estimation of environmental risks comparatively to conventional Uranium projects despite to open-pit mining technology. The reasons for such estimation, connected to geographic location, the inclusion of Uranium minerals in natural ecosystems and low scale of deposits (both in grade and size sense). Potential by-products (Vanadium and Strontium) are not part of environmental factors assessment.

scholarly journals Self-managing socialism and urban planning: The case study of general plan of Belgrade 1972

2018 ◽  
Vol 10 (1) ◽  
pp. 81-94
Author(s):  
Jelena Radosavljević
Keyword(s):  
Urban Planning ◽  
Planning Process ◽  
Local Level ◽  
Institutional Arrangements ◽  
Planning Practice ◽  
General Plan ◽  
Managing System ◽  
The Impact

This paper aims to open up a discussion about relations between former Yugoslavia's socialism and planning practice resulting from self-managing system established in early 1950s. Although this system was applied through a top-down approach, it implied, at least allegedly, coordination, integration and democratic harmonisation of particular interests with common and general ones on local level. The paper will briefly review the history and concept of socialist ideology and consider the impact that it had on institutional arrangements evolution and planning practice in Serbia. It will then touch on the role of ideology for urban planning process at the local level, understanding self-managing planning principles, their benefits, role and significance in planning practice.

scholarly journals Dialectical Design Dialogues: Negotiating Ethics in Participatory Planning by Building a Critical Design Atlas

2020 ◽  
Vol 5 (4) ◽  
pp. 238-251
Author(s):  
Barbara Roosen ◽  
Liesbeth Huybrechts ◽  
Oswald Devisch ◽  
Pieter Van den Broeck
Keyword(s):  
Urban Planning ◽  
Planning Process ◽  
Daily Life ◽  
Participatory Planning ◽  
Dialectical Approach ◽  
Urban Transformations ◽  
Planning Processes ◽  
Everyday Reality ◽  
The City

This article explores ‘dialectical design dialogues’ as an approach to engage with ethics in everyday urban planning contexts. It starts from Paulo Freire’s pedagogical view (1970/2017), in which dialogues imply the establishment of a horizontal relation between professionals and amateurs, in order to understand, question and imagine things in everyday reality, in this case, urban transformations, applied to participatory planning and enriched through David Harvey’s (2000, 2009) dialectical approach. A dialectical approach to design dialogues acknowledges and renegotiates contrasts and convergences of ethical concerns specific to the reality of concrete daily life, rather than artificially presenting daily life as made of consensus or homogeneity. The article analyses an atlas as a tool to facilitate dialectical design dialogues in a case study of a low-density residential neighbourhood in the city of Genk, Belgium. It sees the production of the atlas as a collective endeavour during which planners, authorities and citizens reflect on possible futures starting from a confrontation of competing uses and perspectives of neighbourhood spaces. The article contributes to the state-of-the-art in participatory urban planning in two ways: (1) by reframing the theoretical discussion on ethics by arguing that not only the verbal discourses around designerly atlas techniques but also the techniques themselves can support urban planners in dealing more consciously with ethics (accountability, morality and authorship) throughout urban planning processes, (2) by offering a concrete practice-based example of producing an atlas that supports the participatory articulation and negotiation of dialectical inquiry of ethics through dialogues in a ‘real-time’ urban planning process.

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