Educational guide | ||||||||||||||||||||||||||||||||||||||||
IDENTIFYING DATA | 2023_24 | |||||||||||||||||||||||||||||||||||||||
Subject | EXPLOSIVES AND THEIR APPLICATIONS. | Code | 00808022 | |||||||||||||||||||||||||||||||||||||
Study programme |
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Descriptors | Credit. | Type | Year | Period | ||||||||||||||||||||||||||||||||||||
4.5 | Compulsory | Third | First |
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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 dferl@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=0808022&cursoa=2022 | |||||||||||||||||||||||||||||||||||||||
General description | Explosives are widely used to break up rocks and minerals, to demolish buildings and to dig out cavities for civil structures. This subject covers the basic concepts relating to commercial explosives and to their applications in underground and open-cast mining. On successfully completing this course, students should be able to demonstrate a familiarity with the characteristics of the main types of explosive available, having also acquired the basic theory of engineering for explosions and of their application. Particular attention is paid to the effects of rock breaking in the mining cycle and to the carrying out of explosions that are safe and harmless for the environment. During the course, students will have the opportunity to interact with experts in the field. | |||||||||||||||||||||||||||||||||||||||
Tribunales de Revisión |
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Competencias |
Code | |
A16754 | |
A16755 | |
A16756 | |
A16757 | |
A16758 | |
A16759 | |
A16760 | |
A16761 | |
A16762 | |
B5150 | |
B5152 | |
B5155 | |
B5157 | |
B5158 | |
B5159 | |
B5167 | |
B5168 | |
B5169 | |
B5170 | |
B5171 | |
B5172 | |
B5180 | |
B5183 | |
B5184 | |
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. |
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 | |||
A16754 A16755 A16756 A16757 A16758 A16759 A16760 A16761 A16762 |
B5150 B5152 B5155 B5157 B5158 B5159 B5167 B5168 B5169 B5170 B5171 B5172 B5180 B5183 B5184 |
C2 C4 C5 |
Contents |
Topic | Sub-topic |
COURSE IS TAUGHT AS A SINGLE BLOCK | TOPIC 1: PROCESS OF DETONATING EXPLOSIVES 1.1. Introduction 1.2. Combustion, deflagration and detonation 1.3. The process of detonating an explosive TOPIC 2: PROPERTIES OF EXPLOSIVES 2.1. Introduction 2.2. Power and energy 2.3. Speed of detonation 2.4. Density 2.5. Detonation pressure 2.6. Stability 2.7. Water resistance 2.8. Sensitivity 2.9. Transmission of an explosion 2.10. Desensitization TOPIC 3: INDUSTRIAL EXPLOSIVES 3.1. Introduction 3.2. Dry blasting agents 3.3. Gelignite 3.4. Water gels 3.5. Emulsions 3.6. Powders TOPIC 4: CRITERIA FOR SELECTING EXPLOSIVES 4.1. Introduction 4.2. Cost 4.3. Charge diameter 4.4. Rock characteristics 4.5. Volume of rock 4.6. Atmospheric conditions 4.7. Presence of water 4.8. Problems of the surroundings 4.9. Smoke 4.10. Safety conditions 4.11. Explosive atmospheres TOPIC 5: ACCESSORIES FOR EXPLOSIONS 5.1. Introduction 5.2. Electric firing systems: electric detonators 5.3. Non-electric firing systems: non-electrical detonators, detonating cord, relays, detonating assemblies, and so forth. 5.4. Sources of energy: exploders 5.5. Other accessories 5.6. Calculating explosive charges TOPIC 6: MECHANISMS OF ROCK RUPTURE 6.1. Introduction 6.2. Mechanisms of rock rupture 6.3. Transmission of a shock wave through a rocky medium 6.4. Energy performance of explosions 5.7. Drilling schematic and firing sequence TOPIC 7: UNDERGROUND EXPLOSIONS 7.1. Introduction 7.2. Advancing tunnels 7.3. Types of cutters and calculations for explosions 7.4. Drilling schematic 7.5. Firing sequence TOPIC 8: CONTOUR BLASTING 8.1. Introduction 8.2. Fundamentals of contour blasting 8.3. Splitting 8.4. Pre-splitting TOPIC 9: OPEN-AIR EXPLOSIONS 9.1. Introduction 9.2. Controllable variables in explosions 9.3. Bench blasting 9.4. Blasting to create rock fill dykes 9.5. Blasting on slopes 9.6. Blasting in ditches and trenches TOPIC 10: EXPLOSIONS IN EXPLOSIVE ATMOSPHERES 10.1. Introduction 10.2. Classification of operations 10.3. Firing methods TOPIC 11: VIBRATIONS PRODUCED BY EXPLOSIONS 11.1. Introduction 11.2. Parameters influencing the setting up of vibrations 11.3. Charge and distance table TOPIC 12: SAFETY STANDARDS IN THE USE OF EXPLOSIVES 12.1. Introduction 12.2. Preparation of detonator cartridges 12.3. Loading and firing 12.4. Destroying unwanted explosives |
PRACTICALS | · Identifying initiators for explosions. · Placing initiators for explosions. · Field visits to mines, public works or manufacturers’ magazines, according to availability. |
Planning |
Methodologies :: Tests | |||||||||
Class hours | Hours outside the classroom | Total hours | |||||||
Laboratory practicals | 8 | 14 | 22 | ||||||
Seminars | 4 | 4 | 8 | ||||||
Assignments | 0 | 7.5 | 7.5 | ||||||
Lecture | 30 | 42 | 72 | ||||||
Extended-answer tests | 3 | 0 | 3 | ||||||
(*)The information in the planning table is for guidance only and does not take into account the heterogeneity of the students. |
Methodologies |
Description | |
Laboratory practicals | Laboratory practicals will be replaced by visits to mining sites. |
Seminars | They will deal with specific topics proposed by the teacher, and a discussion forum will be set up among the students. |
Assignments | Design of an open-cast mine. |
Lecture | Course syllabus. |
Personalized attention |
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Assessment |
Description | Qualification | ||
Lecture | The presentation and active participation in the activities proposed by the teacher will be valued. | 5 % | |
Assignments | An evaluation will be made of the work handed in related to the subjects taught in the course. | 15 % | |
Extended-answer tests | Two written mid-term exams. These exams will be taken in lieu of the final exam. | 80 % | |
Other comments and second call | |||
In order to pass the course, it is essential to obtain at least 5 points out of 10 in each of the written tests (theory+problems). If the mark is equal to or higher than 5 points, the rest of the marks obtained in assignments and seminars will be added to this mark. Otherwise, the final mark will be the mark obtained in the written exam. |
Sources of information |
Access to Recommended Bibliography in the Catalog ULE |
Basic |
IGME, Manual de perforación y voladuras de rocas, IGME, 1994 López Jimeno, C., López Jimeno, E., García Bermúdez, P. , Manual de perforación, explosivos y voladuras, ETSIME-Proyectos, 2017 Bernaola, J.; Castilla, J.; Herrera, J., Perforación y voladura de rocas en minería, ETSIME, 2013 |
Complementary | |
Recommendations |
Subjects that are recommended to be taken simultaneously | ||
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