7264 Underground mine exploitation

Introduction to underground mining technology, challenges and issues encountered. Selection of optimal mine access (number, location, type and characteristics). Optimal size of deposit section served by the access works. Tunnel excavation methods and shaft sinking development. Special techniques to address aquifers and unstable formations. Drill-and-blast excavation cycle (drilling, charging, blasting, ventilation, haulage, support). Introduction to underground mining methods. Main characteristics and prerequisites. Application examples. Mine development works. Determination of annual production and life time of the mine. Ventilation of underground mines. Principles of air flow and resistance. Determination of required air flow volume. Fan characteristics and connection types. Primary and secondary networks. Solving complex networks. Mine resistance and operating point. Energy requirements.
ECTS : 6
Language : el
Learning Outcomes : • Be able to utilize the results of mining exploration to form an adequate model of the deposit and surrounding rocks, with the aim of studying the problem of access and development for the preparation of its exploitation. • Be able to select the appropriate method of access and development, as well as the location, form, and cross-section of the respective works. • Be able to select the safest excavation method for access works, depending on the prevailing conditions. • Know and be able to integrate modern technology in the construction of access works for underground deposits. • Know and understand the basic techniques and methods of underground deposit exploitation. • Understand ventilation issues, as well as the characteristics and specifications required for the safety of workers in an underground exploitation. • Analyze and design the main and auxiliary ventilation circuits of underground exploitations, calculate the main quantities that characterize them, and select the appropriate equipment (fans) that will serve them. • Be able to collaborate with fellow students to solve and present a case study related to the selection of the method of access and development of a deposit, as well as the appropriate ventilation and dewatering circuit.