Experimental-numerical method for evaluation of energy consumption in percussive drilling of granite

Most geothermal energy is found in hot and dry rock (HDR), the total resources distributed at depths of 3-10 km are 20.9×10 6 EJ. HDR projects developed granite formations understanding control consumption percussive drilling essential. Thus, impact dissipated various processes including fracture granite, kinetic particles, heat. This study presents a numerical-experimental method to evaluate process. The uses particle flow code (PFC2D) experiments using modified Hopkinson pressure bar system. Optical high-speed infrared cameras were used record process during dynamic velocity fragments was estimated by images instantaneous temperature change observed from images. Preliminary results given this indicating that proposed numerical experimental methodologies can be investigate drilling. preliminary presented paper part larger work progress, more needs carried out obtain under different loading boundary conditions.