Educational guide
IDENTIFYING DATA 2023_24
Subject EXPLOSIVES AND THEIR APPLICATIONS. Code 00808022
Study programme
0808 - GRADO EN INGENIERIA MINERA
Descriptors Credit. Type Year Period
4.5 Compulsory Third First
Language
Castellano
Prerequisites
Department TECN.MINERA,TOPOGRAF. Y ESTRUC
Coordinador
SIERRA FERNANDEZ , CARLOS
E-mail csief@unileon.es
dferl@unileon.es
Lecturers
FERNANDEZ LOPEZ , DAVID
SIERRA FERNANDEZ , CARLOS
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
Tribunal titular
Cargo Departamento Profesor
Presidente BERNARDO SANCHEZ , ANTONIO
Secretario TECN.MINERA,TOPOGRAF. Y ESTRUC CASTAÑON GARCIA , ANA MARIA
Vocal TECN.MINERA,TOPOGRAF. Y ESTRUC VIEJO DIEZ , JULIO
Tribunal suplente
Cargo Departamento Profesor
Presidente TECN.MINERA,TOPOGRAF. Y ESTRUC SANZ ABLANEDO , ENOC
Secretario TECN.MINERA,TOPOGRAF. Y ESTRUC GOMEZ FERNANDEZ , FERNANDO
Vocal TECN.MINERA,TOPOGRAF. Y ESTRUC ALVAREZ DE PRADO , LAURA

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
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
 
Lecture
Assignments
Extended-answer tests
Description
Personal attention to the student to solve doubts.

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
EXPLOTATIONS OF MINES I / 00808021