1. Karolelano ea boholo bo boholo ba likaroloana tsa thepa pele e siloa ho ea boholo bo boholo ba likaroloana tsa sehlahisoa kamora ho siloa

i=Dmax/dmax (Dmax—-Boholo ba karoloana ea thepa pele e siloa, dmax—-boholo ba karoloana ea sehlahisoa kamora ho siloa)

2. Karolelano ea bophara bo sebetsang ba kou ea phepelo ea crusher ho bophara ba lesoba la ho ntša metsi

i=0.85B/b (B—–Bophara ba kou ya phepelo ya sekere, b—–Bophara ba ho bula ha sekere, 0.85—-Netefatsa hore sekere se loma bophara bo sebetsang ba thepa.)

Boleng ba bophara ba lesoba la ho ntsha metsi: mochini o kgohlang o nka bophara ba lesoba la ho ntsha metsi; seqhenqha se bohareng se nka bophara ba lesoba la ho ntsha metsi.

3. i=Dcp/dcp

(Dcp—bophara ba karolelano ba thepa pele e silwa; dcp—bophara ba karolelano ba thepa kamora ho silwa)

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