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	Ventilazione Mineraria	Criterio di rottura di Hoek-Brown	Ottimizzazione del layout delle cave sotterranee
Campo	Ingegneria mineraria	Ingegneria mineraria	Ingegneria mineraria
Famiglia	Process / pipeline	Process / pipeline	Process / pipeline
Anno di origine	1880	1980	1960
Ideatore	Mining Engineering Practice	Evert Hoek and E. T. Brown	Mining Engineering Practice
Tipo	System design for safe air quality and worker cooling in underground mines	Empirical criterion for rock mass strength prediction	Optimization framework for underground mine excavation design
Fonte seminale	Hartman, H. L., Mutmansky, J. M., Ramani, R. V., & Wang, Y. J. (2012). Mine ventilation and ambient air quality. Society for Mining, Metallurgy & Exploration, Inc.	Hoek, E., & Brown, E. T. (2002). The Hoek-Brown failure criterion and GSI: 2018 update. Journal of Rock Mechanics and Geotechnical Engineering, 10(2), 445-463.	Brady, B. H. G., & Brown, E. T. (2004). Rock mechanics for underground mining. Springer Science+Business Media.
Alias	Underground Mine Ventilation, Air Flow Design, Mine Haulage Ventilation	Generalized Hoek-Brown Criterion, HB Criterion	Stope Design, Underground Mine Layout, Panel Design
Correlati	3	3	3
Sintesi	Mine ventilation is the design and operation of systems that deliver fresh air to underground mining areas and remove contaminated air, heat, and hazardous gases. It is critical for worker safety and productivity, maintaining breathable air (sufficient oxygen, low dust and gas concentrations) and acceptable temperatures. Proper ventilation design requires calculating heat loads from mining operations, determining required air volumes, and designing shaft/drift geometry to deliver adequate flow.	The Hoek-Brown Criterion, developed by Evert Hoek and E. T. Brown starting in 1980, is an empirical failure criterion that predicts the shear strength of rock masses as a function of confining pressure. It accounts for rock quality (via the Geological Strength Index, GSI) and thus bridges laboratory rock mechanics and field behavior. The criterion is widely used in mining for slope stability, pillar design, and stress analysis.	Stope layout optimization is the process of designing the size, shape, and spatial arrangement of underground mine excavations (stopes) to maximize ore recovery while maintaining safety and economic viability. It balances the desire for large extraction volumes against rock mechanics constraints and support costs. The layout determines mining productivity, capital investment in support systems, and long-term mine life.