224-0261/01 – Blasting operation and rock disintegration (TPRH)
| Gurantor department | Department of Geotechnics and Underground Engineering | Credits | 4 |
| Subject guarantor | Ing. Martin Stolárik, Ph.D. | Subject version guarantor | Ing. Martin Stolárik, Ph.D. |
| Study level | undergraduate or graduate | Requirement | Compulsory |
| Year | 3 | Semester | winter |
| | Study language | Czech |
| Year of introduction | 2019/2020 | Year of cancellation | |
| Intended for the faculties | FAST | Intended for study types | Bachelor |
Subject aims expressed by acquired skills and competences
- teach the student to design a blasting technology for rock disintegration during the excavation of a horizontal underground structure
- acquaint the student with the range of products of blasting techniques, initiation of charges, disintegration theory and own technology of blasting
- designing a blasting technology with determination of basic blasting parameters
Teaching methods
Lectures
Tutorials
Summary
The main topic of the course is to get acquainted with the problem of rock disintegration with blasting work. The basics of the explosion disconnection mechanism are defined. The range of blasting techniques, their utility properties and the way they are handled and used. Other forms of rock disintegration are included as a mechanical disintegration with knives or chisels, disconnection by pressurized water and other special methods. An essential part of the subject is the relevant legislation of the Czech Republic, especially in the field of blasting works. The student will learn how to design blasting while excavation the underground objects (horizontal structures, caverns, tunnels, etc.) with the optimal design of the blasting technology.
Compulsory literature:
Bhandari, S.: Engineering Rock Blasting Operations, A.A.Balkema, 1997
Johansen, J.: Modern Trends in Tunnelling and Blast Design, A.A.Balkema, 2000
Persson P.-A., Holmberg R., Lee J.: Rock Blasting and Explosives Engineering, CRC Press, 1993
Recommended literature:
Olofsson, O.S.: Applied Explosives Technology for Construction and Mining, APPLEX, 1988
Way of continuous check of knowledge in the course of semester
E-learning
Other requirements
At least 70% attendance at the exercises. Absence, up to a maximum of 30%, must be excused and the apology must be accepted by the teacher (the teacher decides to recognize the reason for the excuse).
Tasks assigned on the exercises must be hand in within the dates set by the teacher.
Prerequisities
Subject has no prerequisities.
Co-requisities
Subject has no co-requisities.
Subject syllabus:
Lecture topics:
Introduction to the discipline - history of rock disintegration, basic concepts
Classical and non-classic rock disintegration
Blasting operation - tools of blasting, properties and handling with them
Initiation of explosive charges - principle, connection, suitability and guarantee initiation, unwanted initiation, millisecond blasting technique
Theory of rock disintegration by explosion - basic parameters of blasting
Technology of blasting for the excavation of underground line structures
Blasting for the excavation of underground large cross-sections structures
Saving technologies (smooth blasting) - methods, principles, determination of basic parameters
Non-productive blasting operation to prevent unwanted geomechanical phenomenas
Blasting works for mining of mineral resources
Reduction of blasting operations by application in explosive atmospheres (gaseous coal mines)
Harmful effects of explosion (air pressure wave, material spill, fume toxicity, seismic effects of blasting)
Mechanical rock disintegration (cutting, crushing, pressing), application of knives, rolling chisels, etc. - drilling machines, tunnel machines, shields, hydraulic hammers
Practice topics:
Chemistry of explosives
Electric initiation
Non-electric initiation
Pasport of blasting for the gallery
- convergent cut
- direct cut
Pasport of blasting for large-scale underground structure
Harmful effects of blasting
Seismicity of blasting
Blasting Legislation in the Czech Republic
Conditions for subject completion
Occurrence in study plans
Occurrence in special blocks
Assessment of instruction