Study on the Process of Rock Fragmentation by High-Voltage Pulse Discharge

Rock fragmentation by high-voltage pulse discharge (rock fragmentation by high-voltage pulse discharge, RFHD) is a potential, new and efficient drilling technology. The RFHD platform is established to study the relationship between voltage characteristics and discharge path distribution in typical liquid-rock composite media. Based on the discrete element method, multi-physical field simulation and numerical calculation, the development law of plasma channel in rock is analyzed. High voltage pulse discharge drilling experiments were carried out for rock-like components, which provided a theoretical and technical basis for the application of RFHD.