Principles of Drilling and Blasting in Mining

After participating in the seminar, you will be able to:

• Understand the properties, types, and historical development of commercial explosives.
• Design effective surface and underground blast patterns using industry-standard techniques.
• Analyze rock dynamics, fragmentation, and environmental impacts such as vibration and noise.
• Select appropriate drilling equipment and evaluate drilling performance metrics.
• Apply modern software tools and case study insights to optimize drilling and blasting operations.

Description
This course provides engineers with an introductory overview of modern drilling and blasting techniques in both surface and underground mining operations. Participants will gain a solid foundation in explosive properties, initiation systems, and wave transmission in rock, followed by practical insights into blast design for both surface and underground environments.

The final day focuses on drilling techniques, equipment selection, and performance evaluation, including an introduction to mechanized excavation systems such as TBMs and raiseborers. Through a blend of lectures, interactive discussions, and case studies, attendees will develop the technical knowledge and analytical skills needed to enhance safety, efficiency, and productivity in mining operations.

Who Should Attend
This course is ideal for:

• Mining engineers and geotechnical professionals
• Drill and blast supervisors
• Technical staff involved in mine planning and operations
• Environmental and safety officers seeking a deeper understanding of blasting impacts

Day I – Fundamentals of Explosives and Blasting

• Introduction & Participant Backgrounds
  Overview of participants' experience and course expectations.
• Course Overview
  Structure, learning outcomes, and key topics to be covered.
• Explosive Properties
  Basic characteristics and classifications of commercial explosives.
• Historical Overview & Types of Explosives
  Evolution of explosives: black powder, dynamite, TNT, ANFO, and emulsions.
• Principles of Priming & Initiation Systems
  Use of detonators, boosters, and initiation sequencing in blasting operations.
• Wave Transmission in Rock
  Fundamentals of stress wave propagation, energy transfer, and fragmentation.

Day II – Blast Design, Analysis, and Applications

• Surface Blast Design
  Bench design parameters: burden, spacing, stemming, and charge calculations.
• Underground Metal and Nonmetal Blasting
  Blasting techniques and considerations for confined environments.
• Rock Dynamics and Fragmentation
  Impact of rock properties on blast performance and fragmentation outcomes.
• Blasting Vibrations and Noise
  Measurement methods, control techniques, and compliance with regulations.
• Blast Design Software Tools
  Overview of tools used to model and optimize blast designs.
• Case Histories
  Analysis of real-world blasting scenarios and key takeaways.

Day III – Drilling Techniques and Equipment

• Surface & Underground Drilling Overview
  Role of drilling in the mining cycle and blast planning.
• Drilling Equipment Selection
  Criteria for selecting appropriate drilling equipment based on geology.
• Drilling Accessories
  Types and roles of rods, bits, stabilizers, and other components.
• Percussion and Rotary Drilling
  Mechanisms, advantages, limitations, and applications.
• Evaluating Drill Performance
  Key performance indicators: penetration rate, bit wear, and cost efficiency.
• Mechanized Excavation: TBMs, Continuous Miners, Raiseborers
  Introduction to advanced mechanical excavation systems.