发明名称 METOD FOR ATERFYLLNAD VID GRUVDRIFT OCH MATERIAL FOR DETTA ENDAMAL
摘要 A method of backfilling in underground mine operations by a mill tailings slurry which is dewatered to provide a material with a controlled water content to permit the dewatered material to be used as a backfill without requiring any substantial dewatering after placement and which material can, when desired, be mixed with selected quantities of cement to provide a mortar for backfilling or surface covering.
申请公布号 SE7708874(L) 申请公布日期 1978.02.20
申请号 SE19770008874 申请日期 1977.08.04
申请人 JOY MFG CO 发明人 WAYMENT W R
分类号 E21C41/16;E21F15/08;(IPC1-7):E21F15/00 主分类号 E21C41/16
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