In a Hard Rock TBM, cutterhead RPM (revolutions per minute), thrust force, and penetration rate are interconnected parameters that must be optimized to achieve efficient excavation. The relationship is complex and depends on the rock type and its strength. Generally, increasing thrust force increases the penetration rate, but only up to a certain point. If the thrust force is too high for the rock strength, it can lead to cutter overload, premature wear, and reduced penetration rate. Cutterhead RPM affects the rat....
Log in to view the answer
