Disaster$-$resilient energy infrastructure operation and maintenance involves theoretical considerations of ensuring the reliability, resilience, and safety of energy supply systems through risk$-$based asset management, maintenance optimization, and emergency response planning. Construct a detailed theoretical framework delineating principles of disaster$-$resilient energy infrastructure operation and maintenance, including asset condition monitoring, resilience assessment, and outage management strategies. Explore theoretical models for assessing energy infrastructure vulnerabilities, such as system reliability analysis, consequence assessment, and risk$-$based prioritization, and discuss theoretical approaches to enhancing infrastructure resilience through proactive maintenance, system redundancy, and rapid restoration measures, aiming to maintain energy supply continuity, support emergency response efforts, and minimize socio$-$economic disruptions in disaster events.