Research and Application of Underground Filling Mining Technology in Coal Mines
In response to the backfilling mining technology of a certain mining face,the layout and support scheme of the roadway,as well as the specific scheme of backfilling gangue technology,were proposed based on the comprehensive consideration of the working conditions of the coal seam site.Among them,the support scheme adopts a combination of gangue wall construction and anchor cable fixation,achieving safe support of the tunnel and increasing stability.The backfilling process realizes the reuse of mining waste rock,ensuring that the density of gangue is above 85%,greatly improving the stability of goaf support.Budgeting the improved costs and using backfill mining technology can save nearly 19.1 million yuan in costs,significantly improving the economic benefits of the mining area.
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