Abstract: Safe and efficient mining of deep coal seam and ecological environment protection is one of the major problems in green mining of coal resources. Backfill mining has remarkable effects on preventing deep well dynamic impact disasters,reducing surface subsidence and protecting ecological environment. The water volume ratio of super-high water material backfill is high,and backfill mining has the characteristics of simple process,strong adaptability,less materials and high backfill rate, which can effectively solve the prominent contradiction between surface environmental protection and coal resource mining damage. Meet the requirements of the new development concept of coal resource disaster mitigation and loss reduction green intelligent mining. On the basis of summarizing the research and development background of backfill mining technology,the technical principle,process flow and material properties of super-high water backfill mining are clarified. The mechanism of dynamic disaster prevention in backfill mining is mainly revealed from the aspects of surface subsidence control " backfill body-coal pillar" and " backfill body-support-coal body" collaborative load. The key technologies of disaster reduction and loss reduction in green mining power disaster prevention,intelligent perception,surface deformation monitoring and prediction and intelligent control of backfill equipment are put forward,which have been successfully conducted super-high water material backfill mining practice in Yineng Coal Mine in Shandong Province,and the safe and efficient intelligent green mining of deep coal seams under buildings,railways,and water bodies is realized. In order to promote the construction of ecological civilization and environmental protection,and realize the green mining of disaster mitigation and loss reduction in modern mines,the research direction of super-high water material backfill is prospected as follows:deepen the basic theory of rock control for deep super-high water material backfill mining,improve the intelligent level of super-high water backfill mining technology,innovate the collaborative mining technical system of super-high water backfill mining and coal measures associated resources,combine super-high water backfill mining with carbon capture,storage and reuse technology,optimize the monitoring and evaluation system and method of intelligent green mining,so as to provide scientific basis for the realization of deep resources green mining.

Key words: super-high water material backfill,green mining,collaborative bearer,disaster mitigation and loss reduction, surface subsidence