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What is Penetration Coefficient in Rock Drilling about?

This study establishes a mathematical model for the penetration coefficient in rock drilling using a hydraulic breaking hammer, focusing on the effects of cyclic impact on rock cohesion and penetration depth. The discrete element method (DEM) is employed to simulate various drilling conditions, revealing that drill bit shape and angle significantly influence the penetration coefficient, while impact velocity has a minimal effect. The findings provide insights for enhancing rock drilling efficiency and minim

Author

Furu Guan

Language

EN