Hydraulic calculation of gravity pipeline transportation system of cemented coal gangue backfilling in Suncun Coal Mine, China
9th International Symposium on Mining with Backfill
Necessary capability of gravity pipeline transportation system of cemented coal gangue backfilling in Suncun Coal Mine, China, is about 74.4 m3•h-1 according to mining production and working times in the mine. It is estimated that working velocity and maximum pipe length-backfill depth ratio of the backfill system are 3.82m•s-1 and 5.4, and that probable backfill capability of the system is 110.18m3•h-1, respectively. Results of hydraulic calculation of the backfill system prove that designed backfill system is reliable in flowability and enough in backfill capability.
hydraulic calculation, pipe length-backfill depth ratio, backfill capability, working velocity, flowability