Green Mining Takes Place at the Power Plant

The number of large coal power plants, characterized by pithead is increasing rapidly in major mining countries around the world. Overburden movement caused and greenhouse gas emissions thermal generation are intertwined, have become important challenges for mine ecological environment protection at present future. In order to provide more options green a base northwest China was taken as researching background this paper, model considering above two aspects damages proposed; that is, carbon dioxide produced coal-fired plants can be geologically trapped goaf, whose overburden stability controlled backfill strips made solid waste. explore feasibility model, bearing strength filled gray brick consisting mainly aeolian sand fly ash under different curing methods firstly studied, it discovered significantly improved after carbonization curing. After that, X-ray diffraction (XRD) scanning electron microscopy (SEM) were employed compare mineral composition its spatial morphology before carbonization, believed formation dense acicular calcium carbonate fundamental reason improvement strength. Finally, series stope numerical models established with UDEC software analyze surface settlement, crack propagation height air tightness overlying strata, respectively, when goaf supported backfilling carbonized brick. research results paper showed strata effectively adjusting methods, width spacing brick, so facilitate following geological sequestration goaf. Consequently, utilization resolved whole, purpose achieved desired.