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Filling purpose:

· Support rock layers and control ground pressure activity in the mining area;

· Prevent surface subsidence and protect surface features;

· Provide a working platform for continued upward mining (similar to the retention method function);

· Improve the stress state of the mining pillar (from uniaxial compression to triaxial compression) to ensure maximum recovery of mineral resources;

· Ensure safe mining of high sulfur deposits with internal flash fire hazards;

· Control rock burst during deep well mining and reduce deep ground temperature;

· Ensure the safety of production during joint open-pit and underground mining;

· Dealing with waste materials of the same body and protecting the environment.

Complete technology and equipment for mine filling:

The complete set of mining filling technology is an advanced mineral resource mining technology. It uses waste ore, tailings or other industrial waste as filling materials to fill the goaf, achieve stable support for underground space, control surface subsidence, reduce environmental pollution, and achieve comprehensive utilization of resources. This technology mainly includes the preparation, transportation, injection, compaction and other process flows of filling materials, as well as corresponding equipment and devices. After preparation, the filling material is transported underground through a pipeline system to form a stable artificial foundation in the goaf. During the filling process, the automation and intelligence level of equipment continues to improve to meet the requirements of efficient and safe production. The application of complete mining filling technology is of great significance for achieving green mining construction and promoting sustainable development of the mining industry.