Report copyright - Designofbackfillassupportin PolishCoalMines - SAIMM · pipelineP(lp,hp),theequationforpressurecan bepresentedas v2 Hpmg=Pp+hpp mg+-Lpm 2 k +I.t1.pJi i=1 [3] [1] where:H=totaldepthofthepipeline
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