Research Status and Development Trend of High Sand Filling Materials

The coal is main energy in our country, it takes many economy and environment problems in the process of exploitation process.With the development of large-scale mining area, mining of rock fracture field and the change of the terrain, vegetation and ecological environmental impact of surface water, ground seriously. This paper introduces about goaf paste filling mining which is the important part of coal green mining technology, it is an effective method to solve subsidence and the problem of coal mining surface ecological environment. Occurrence of aeolian sand and flexible strip filling control effect on the stability of water-resisting layer create conditions for the development of the local water filling mining.The paste filling material prepared with cemented Filling materials has the advantages of low cost and environment protection, which can take the various benefits such as economy, society and environment to diggings.