The simulation process of geothermal mining will involve the interaction of different phase states (such as solid, liquid, gas) and multiple fields (such as temperature field, physical field, chemical field, etc.). In the flow process, it is not only necessary to consider the interaction between different material phases, but also the interaction between the flow and other physical fields such as temperature field and stress field. The multi-phase flow simulation usually needs to consider the interaction and motion law between different phase states, involving the flow state, interface phenomenon, phase transition process, etc. In the aspect of thermal coupling simulation, the main concern is the process of energy transfer and conversion in the system, involving heat transfer processes such as heat conduction, convection and radiation. The chemical coupling simulation focuses on the chemical reaction in the system and its interaction with flow, heat transfer and other processes, which requires in-depth understanding of the kinetics, thermodynamics and reaction mechanism of the chemical reaction. Mechanical coupling simulation focuses on the effects of various forces in the system and their interactions with flow, heat transfer and chemical processes, including the calculation and analysis of mechanical quantities such as pressure, stress and strain. This comprehensive study contributes to a deeper understanding of complex phenomena in multiphase flow processes. Today's research pays more attention to cross-disciplinary integration and innovative development, and will also pay more attention to the needs of engineering practice and practical applications. Therefore, this topic can contribute to solving practical application problems and promoting scientific and technological development by focusing on the challenges and difficulties in the fields of hydrothermal, multiphase flow and chemical-mechanical coupling.

In general, the genetic mechanisms, resource exploration and evaluation, and target area selection of HDR geothermal resources constitute a highly comprehensive research topic. It requires a thorough understanding of multiple disciplines, including geology, geothermal science, physics, chemistry, and thermodynamics, and also demands considerable human and material resources. Therefore, research on this topic holds significant theoretical value and practical importance.