Effect analysis technology of coal waste backfilled mining technology to high cutting coal mining face，

In order to accurate evaluation on the mechanized coal waste backfilling effect of the high cutting coal mining face,a method combined with a theoretical an alysis,lab test and engineering practices was applied to determine the factors affected to the evaluation on the backfilling quality based on the thick seam mining under the buildings in Dongping Coal and to establish the quality evaluation technical system of the mechanized coal waste flling in the high cutting mining face. The study results sh owed that the backfilled quality evaluation technical system consisted of the overburden strata movement law above the backfilled mining,factors affected to the backfilled quality,quality diction parameters,quality diction system arrangement,quality detection evaluation means and other subsystem could accurately evaluate the backilled quali ty. The backilled quality detection and evaluation was successfully conducted in Dogping Coal with obvious social and economic benefit obtained and could provide the gui dance and references to the coal waste backilled mining technology of the seam under the vllage with similar condition.