中国矿山工程

This paper delves into the disaster-causing mechanisms and prevention strategies of mine vertical shaft hoisting system’s portal safety gate accidents. After analyzing domestic and foreign accident cases, it identifies mechanical failures, human-induced errors, and management deficiencies as key causes. It also systematically categorizes the structural and safety features of planar, vertical, V-shaped, and fold-over safety gates, presenting an inherent safety analysis framework and model selection optimization plan. Furthermore, it thoroughly assesses various drive modes (manual, pneumatic, electric, hydraulic, and cage-linked), comparing their principles, safety, and pros/cons, along with a guide for scenario-based drive selection. In closure and safety analysis, it originally proposes a hierarchical safety model of mechanical, electrical, and integrated locking, establishes the principle of direct detection of locking signals, and forms an enhanced interlocking control system for start-up, operation, and emergency braking. Finally, it scientifically defines safety-related quantitative indicators, sets inherent safety design standards, and envisions future directions like passive detection tech, intelligent standard systems, and safety integrity verification.