Abstract: Driven by the iteration of informatization and intelligent technology，video surveillance has become more and more widely used in the supervision of underground operations in gold mines. Howev⁃ er，the existing underground mobile video lines are vulnerable to damage and high maintenance costs. There are blind spots in the mobile operation of trackless equipment，and the lack of timeliness of mobile video analysis. In view of the above problems，Jiaojia Gold Mine puts forward a targeted technical scheme， uses new OFDM technology to solve the problem of maintenance of operation head-on monitoring line，car⁃ ries out real-time analysis of trackless operation vehicle loading video，and constructs an intelligent early warning system for mine risk. The application results show that the new OFDM technology significantly re⁃ duces the cost and difficulty of monitoring line operation and maintenance，the intelligent risk early warn⁃ ing module of trackless vehicle effectively reduces the incidence of safety accidents and equipment mainte⁃ nance costs，and the intelligent early warning system of mine risk realizes the rapid and efficient manage⁃ ment and control of underground safety. The research finally realizes the intelligent monitoring of under⁃ ground production environment in the whole region，significantly improves the level of mine safety manage⁃ ment and emergency response ability，provides practical reference for the digital transformation of gold mines，and has significant social and economic benefits.

Key words: video surveillance, new OFDM technology, trackless operation vehicle, intelligent early