Abstract: The construction of green mines has become the industry consensus. Many coal mines are actively exploring new production methods with high efficiency and environmental protection. Haizi Coal Mine in Huaibei Mining Area has successfully used the gangue overburden isolation grouting filling technology by combining the mine filling technology with the mine waste disposal.The background, idea, principle and practical application of this technology are introduced. This technology can effectively reduce the ground collapse and ground fissures and other geological disasters, and eliminate the damage to the ecological environment of the mining area caused by a large amount of ground coal gangue accumulation, so as to the standard of both economic and social benefits are achieved. The application of this technology can provide new ideas and methods for green mining.

Key words: green mine, grouting filling into isolated areas, coal gangue, resource utilization