Complete Set of Coal Mine Backfill System

Utilizes core technologies such as"rationally graded"finished aggregate preparation,paste mixing preparation,high-flow and high-pressure pumping with compensation,"long-distance anti-block pipeline/deep well pressure-reducing transport,""one-click backfill"intelligent control,non-washing pipes,and the development of"green,efficient,low-cost"new materials.This system addresses issues such as"three-under limit on coal production,"surface subsidence,and groundwater level decline.It improves coal mining recovery rates,extends the service life of mines,and enables"water-conserving mining."The system also eliminates ecological and safety risks from the outset,such as land occupation,spontaneous combustion,and collapses caused by surface storage of coal gangue.