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岩心钻探中，功率主要是耗费在破碎岩石、钻头与孔底的摩擦、钻杆与孔壁的摩擦上。按公式（1）计算总功率ＮΣ＝(σmh~(0.75)Fn/225000)＝(cfCn(R＋r)/143000)＋1.25·10r_ж~(-6)Ld~2n~4/3式中：σ—岩石的极限抗压力，公斤/平方公分；
In core drilling, the power is mainly spent in the broken rock, the friction between the drill bit and the bottom of the hole, the friction between the drill pipe and the hole wall. Calculate the total power N Σ = (σmh ~ (0.75) Fn / 225000) = (cfCn (R + r) / 143000) + 1.25 · 10r_te ~ (-6) Ld ~ 2n ~ 4/3 according to the formula - Rock ultimate compressive strength, kg / cm²;