THE DEVELOPMENT AND APPLICATION OF BACKFILL IN XINQIAO PYRITE

The paper introduces the transformation of the backcut-and-fill system in Xinqiao Pyrite Mine,summaries the development and application of filling technologies,and analyzes in detail the backfill of the waste rock in the pit and river sand which is filled into the pit by liquid that can flow by the weight action.This article is good for promotion of backfill.