Abstract: The unattended rapid fault disposal system for coal mine belt conveyors aims to address the operation and maintenance challenges of the main transportation system in intelligent mines by deeply integrating fault mechanism analysis, key technology development, and intelligent response mechanisms. By analyzing the causes of five core faults, namely deviation, slippage, shaft breakage, idler failure and abnormal noise, and innovatively applying laser correction, dynamic tension control, coaxial hot installation and replacement of shaft breakage, and special quick disassembly and assembly tools for idlers, the efficiency of fault location and disposal has been increased by 40%. The intelligent fault feature matching engine is constructed by integrating knowledge graph technology, and the decision response speed exceeds the 5-second level. The three-level response mechanism, in collaboration with the intelligent inspection standards, ensures that the closed-loop time for faults is strictly controlled within 20 minutes. The safety control system relies on the four-level emergency stop link and the zero-tolerance policy for protection devices to completely eliminate the risks of live-line operations. The underground intelligent spare parts warehouse supports the efficient supply of key components. Practice shows that this system has successfully reduced the coal stacking accident rate by 90%, eliminated the risk of burning out the drive motor, and provided technical support for the intelligent continuous production of the mine.