Downhole filling material and mixing device

The invention provides an underground filling material and a mixing device, and relates to the technical field of mine underground filling. The coal gangue and other mine waste resources are utilized, reutilization of waste residues is achieved, the requirement for natural resources is reduced, the calcium sulfate cement and the aggregate are properly added, the filling material has high strength and stability, the mine structure can be effectively supported, collapse and roof sinking can be prevented, and the construction cost is reduced. By recycling waste resources and reducing the consumption of natural resources, the invention has certain environmental protection property. 本申请提供了井下充填材料及混合装置，涉及矿井井下填充技术领域。本发明利用煤矸石等矿山废弃物资源，实现了废渣的再利用，减少了对天然资源的需求，通过适当添加硫酸钙水泥和骨料，充填材料具有较高的强度和稳定性，能够有效支撑矿井结构，防止塌方和顶板下沉，通过废弃物资源的再利用和减少天然资源的消耗，本发明具有一定的环保性。