The Influence of Cemented Paste Backfill on Groundwater Quality

This little literature studies the influence of cemented paste backfill (CPB) on ground water in diggings based on quality comparison between tailings slurry, thickener overflow, indoor soak sample, and seepage of underground paste. Firstly, determine the proportion of injurious ingredient filled underground. Secondly, investigate the amount of hazardous material which are leached from paste during the long time soaking. At last, the detection is made on underground seepage water, and also sample's quality is judged by multi-object decision. The result shows, 16.74% ∼ 79.83% of injurious material in the tailings slurry has been filled into the underground, however, the soak and seepage water turned out to be level I and II when synthetically evaluated by five indexes, which shows the CPB would not pollute the underground water, and it is safe, also feasible to adopt CPB in mining industry.