Principles of Drilling and Excavation

Gang Han, Maurice B. Dusseault, Emmanuel Detournay, Bradley J. Thomson, and Kris Zacny


Predicting the performance of drills requires analytical capabilities that account for the tool's characteristics, rock properties and behavior, the temperature, and other parameters. Also, it necessitates understanding the effect of the applied forces, details of the bit, and the interaction with the drilled rock. This chapter covers the principles of drilling and excavation, both analytically and experimentally, and the requirements for optimization of the drilling operation.

Physical Properties of Rocks

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