Abstract:Mining with backfill method is an effective way to realize the construction of green mine and non-waste mine, and is also the preferred mining method for deep mineral resources exploitation. Metal mine backfill technology has been developed for decades and is gradually mature. But it still faces a series of problems such as long distance and high drop pipeline transportation in deep mining and the constraints of backfill costs. On the other hand, metal mine backfill technology is ushered in the opportunities and challenges of the cross-integration of a new generation of information technology represented by 5G and artificial intelligence. This paper reviewed the development history of metal mine backfill technology, discussed and analyzed in detail the engineering cases of deslimed tailings back?fill, Gobi aggregate backfill, whole tailings backfill and multi-aggregate backfill from the perspective of backfill aggregate, and the differences of these backfill technologies are mainly reflected in the supply mode of aggregate, mixing process and design concept. The paper also looked forward to the future development trend of metal mine backfill technology, and putted forward that the future research should focus on the standardization, modularization, intellectualization and unmanned construction of mine backfill system, green mine backfill technology, low cost and deep-well backfill technology and functional backfill technology. This paper would provide references for domestic mine backfill technology design and future scientific and technological innovation.