Zelin Liu received his B.Eng. and Ph.D. degrees in Engineering Mechanics from China University of Mining and Technology (Beijing). He subsequently carried out postdoctoral research at Tsinghua University and is currently a Lecturer at the State Key Laboratory for Tunnel Engineering, China University of Mining and Technology (Beijing). His research focuses on deep coal–rock mechanics and coalbed methane extraction under complex mining conditions. He has developed integrated triaxial creep–NMR and CT testing techniques to track the evolution of coal pore–fracture systems and permeability along mining-induced stress paths; investigated multi-field coupled gas–water flow and non-Darcy seepage in low-permeability coal seams; and constructed fractal and fractional constitutive models for time-dependent deformation, damage, and creep–permeability coupling in deep coal. He has authored more than ten SCI/EI-indexed papers, including several in JCR Q1 and CAS Zone 1 Top journals, and has participated in multiple national projects on deep resource extraction and gas disaster prevention. His long-term goal is to build mechanism-based, “transparent” models that bridge coal microstructure evolution with macroscopic strength and permeability to support safe and efficient deep mining.