Educational guide | ||||||||||||||||||||||||||||||||||||||||
IDENTIFYING DATA | 2024_25 | |||||||||||||||||||||||||||||||||||||||
Subject | EXPLOTATIONS OF MINES II | Code | 00808027 | |||||||||||||||||||||||||||||||||||||
Study programme |
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Descriptors | Credit. | Type | Year | Period | ||||||||||||||||||||||||||||||||||||
4.5 | Compulsory | Third | Second |
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Language |
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Prerequisites | ||||||||||||||||||||||||||||||||||||||||
Department | TECN.MINERA,TOPOGRAF. Y ESTRUC |
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Coordinador |
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csief@unileon.es ngomm@unileon.es |
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Lecturers |
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Web | http://https://www.unileon.es/estudiantes/oferta-academica/grados/grado-en-ingenieria-minera/plan-estudios?id=0808027&cursoa=2022 | |||||||||||||||||||||||||||||||||||||||
General description | This subject is a continuation of the course entitled Mining Operations I. While the first course is given over to underground workings, this second course concentrates on surface mining. It is crucial to understand strip and open-pit formats at the present time, since there is an ever-greater proliferation of this sort of exploitation of mineral resources. The subject is taught through the medium of Spanish, but in view of the particularities of mining language, there will be frequent references to Latin American and English terms. For this reason, at the start of each topic a list of all such vocabulary will be provided, so as to make it easier for students to consult available bibliography and on-line resources. The course is made up of five theoretical sections and one practical, covering a total of seven theoretical topics and five practical. Upon successful completion of the course, students should be familiar with: • Open-cast mining terminology. • Phases in carrying out an open-cast mining project. • The principal techniques and methods of strip and open-cast mining. • Open-cast techniques of extraction, loading and transport. • Choice of the most appropriate machinery for an open-cast mine. • Basics of spoil tips and holding dams. The course also incorporates a practical project, requiring the establishment of the fundamental working parameters for an open-cast mine or quarry. These blocks, along with the related topics expanding on them so as to meet the objectives of the curriculum, are to be found in the Table of Contents. | |||||||||||||||||||||||||||||||||||||||
Tribunales de Revisión |
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Competencias |
Code | |
A16733 | |
A16734 | |
A16735 | |
A16738 | |
A16739 | |
A16740 | |
A16746 | |
A16747 | |
A16749 | |
A16753 | |
A16763 | |
A16767 | |
B5149 | |
B5150 | |
B5151 | |
B5152 | |
B5155 | |
B5156 | |
B5168 | |
B5170 | |
B5180 | |
C1 | CMECES1 That students have demonstrated possession and understanding of knowledge in an area of study that is based on general secondary education, and is usually found at a level that, although supported by advanced textbooks, also includes some aspects that involve knowledge from the cutting edge of their field of study |
C2 | CMECES2 That students know how to apply their knowledge to their work or vocation in a professional manner and possess the skills that are usually demonstrated through the development and defense of arguments and the resolution of problems within their area of study. |
C3 | CMECES3 That students have the ability to gather and interpret relevant data (normally within their area of study) to make judgments that include reflection on relevant issues of a social, scientific or ethical nature. |
C4 | CMECES4 That students can transmit information, ideas, problems and solutions to both a specialised and non-specialised audience |
C5 | CMECES5 That students have developed those learning skills necessary to undertake further studies with a high degree of autonomy |
Learning aims |
Competences | |||
A16733 A16734 A16735 A16738 A16739 A16740 A16746 A16747 A16749 A16753 A16763 A16767 |
B5149 B5150 B5151 B5152 B5155 B5156 B5168 B5170 B5180 |
C1 C2 C3 C4 C5 |
Contents |
Topic | Sub-topic |
BLOCK I: GENERAL CONCEPTS OF OPEN-CAST MINING | THEME 1: OPEN-CAST MINING 1.1. Introduction: What is open-cast mining? 1.2 Classification of deposits by shape 1.3 Classification by depth 1.4 Exploitation ratios 1.5 Pace and duration of operations 1.6 Short-, medium- and long-term planning 1.7 Sequence of operations 1.8 Advantages and drawbacks of open-cast workings |
BLOCK II WORKING METHODS IN OPEN-CAST MINING | THEME 2: TYPES OF WORKINGS 2.1 Introduction to types of open-cast workings 2.2 Sand and gravel quarries 2.3 Decorative stone quarries 2.4 Berm cutting 2.5 Transfer mining 2.6 Hydraulic mining |
BLOCK III: EXTRACTION AND LOADING IN OPEN-CAST MINING | THEME 3: EXTRACTION AND LOADING TECHNIQUES 3.1. Introduction 3.2. Classification of rock masses by ease of excavation 3.3. Extraction by drilling and blasting. 3.3.1 Rotary hammer drilling: drill carriages 3.3.2 Rotary drilling with three-wing bits 3.4 Cable excavators 3.5 Hydraulic excavators 3.6 Dragline excavators 3.7 Loader excavators 3.8 Bucket wheels 3.9 Augers 3.10 Dredges 3.11 Hydraulic cannons (monitors) 3.12 Loaders THEME 4: EXTRACTION TECHNIQUES FOR DECORATIVE STONE 4.1 The “Finnish Method” 4.2 Diamond-wire cutting 4.3 Ranging arm shearers 4.4 Disc shearers 4.5 Water-jet cutting 4.6 Hydraulic and mechanical wedge spreaders 4.7 Thermic lances |
BLOCK IV: TRANSPORT IN OPEN-CAST MINING | THEME 5: TRANSPORT 5.1. Introduction 5.2 Tipper trucks 5.3 Conveyor belts 5.4 Stackers and accessory equipment in continuous-mining systems 5.5 Mineral pipelines 5.6 Tractors and bulldozers 5.7 Wheel tractor scrapers 5.8 Design of ramps and paths THEME 6: SELECTION OF TRANSPORT MACHINERY FOR MINING 6.1 Introduction 6.2 Equipment output or performance 6.3 Working conditions 6.4 Financial criteria 6.4.1 Fixed costs 6.4.1 Variable costs 6.4.1 Direct 6.4.1 Indirect 6.4.1 Purchase price 6.4.1 Salvage value 6.4.1 Depreciation 6.4.1 ISI costs 6.4.1 Oil, lubricants and filters 6.4.1 Tyres 6.4.1 Repairs 6.4.1 Operator costs 6.5 Design of machinery 6.6 After-sales service 6.7 Calculating hourly cost rates 6.8 Basic maintenance |
BLOCK V: STRUCTURES FOR THE FINAL DISPOSAL OF SOLID MINE WASTE | THEME 7: SPOIL TIPS AND HOLDING DAMS 7.1 Introduction to spoil-tips and dams for mine waste. Transport and dumping. 7.2 Site selection 7.3 Spoil-tip construction 7.4 Analysing spoil-tip stability 7.5 General criteria for tailings ponds 7.6 Dams and pool stability 7.7 Water in the pool |
BLOCK VI: DESKTOP PRACTICALS | 1. Determining the hourly output of crawler and wheel diggers 2. Determining the hourly output of a bulldozer using the Caterpillar performance manual 3. Choosing a high-volume excavator in accordance with the Caterpillar performance manual 4. Calculating hourly costs using SEOPAN criteria (SEOPAN is the Spanish Association of Infrastructure Constructing and Operating Enterprises) |
BLOCK VII: FIELD-WORK PRACTICALS | One or more visits (according to availability) to surface mine workings, public works, or both |
Planning |
Methodologies :: Tests | |||||||||
Class hours | Hours outside the classroom | Total hours | |||||||
Seminars | 7 | 10.5 | 17.5 | ||||||
Assignments | 6 | 27 | 33 | ||||||
Field work/trips | 7 | 0 | 7 | ||||||
Lecture | 21 | 30 | 51 | ||||||
Mixed tests | 2 | 0 | 2 | ||||||
Practical tests | 2 | 0 | 2 | ||||||
(*)The information in the planning table is for guidance only and does not take into account the heterogeneity of the students. |
Methodologies |
Description | |
Seminars | Problem seminars. |
Assignments | Design of an open-cast mine. |
Field work/trips | If conditions permit, trips will be made to open-cast mines. |
Lecture | Theoretical classes given by the teacher. |
Personalized attention |
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Assessment |
Description | Qualification | ||
Assignments | An evaluation will be made of the work handed in related to the subjects taught in the course. | 15 % | |
Mixed tests | Theoretical-practical exam on the contents of the course. | 45 % | |
Practical tests | Written exam of exercises similar to those solved during the practicals. | 40% | |
Other comments and second call | |||
Sources of information |
Access to Recommended Bibliography in the Catalog ULE |
Basic | |
Complementary | |
Recommendations |
Subjects that it is recommended to have taken before | |||||||||||
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