3158Sum.158No.420058METALLURGICALCOLLECTIONSAugust2005TD235.33TD235.21+4B1671-3818200504-0024-03APPLICATIONOFCALCULATINGMETHODOFEXPLOSIVEQUANTITYINBLOWINGUPOFMEDIUM-DEEPHOLESZhengMingjiaoProductionSectionofPanluoIronOreMineFujianAbstractThepaperdescribesthatitishardtoblowupthedeepholeinrationalquantitycalculatedinnormalmannerbutitcouldbeOKforPanluoIronOreMinetoblowupinthequantitycalculatedtotheholeschargingcoefficientindesignofblowingup.Keywordsmedium-deepholeblowingupchargingcoefficientexplosivequantitycalculating123#160m2daLWqdФLfWamQp=VqV=awnt=mw2ntV=swQpkgVm3mwmamLmqkg/m3425nSm2QpqQpqq1q2q①②3KcQp=C×Lp×K1+b1Ckg/mLpmKb5%~10%3.1CC1dC=14πd2Δ×0.001dcmΔg/cm32Kb1C=Qp/Lp×K1+bC1C2CnC=C1+C2++Cn/n3.2KL2LpK=L2/Lp×100%3.3bb23#110m8m23YG-90Ф65mm4AYZ-1500.9~1.0g/cm35f=8~14w=1.5~2.0mm=1.0~1.2a=1.5~2.6mq=1.0~2.4kg/cm36170m3#11C65mm68~70mmd=69mm0.9~1.0g/cm3Δ=1.0g/cm3dΔC=14πd2Δ×0.001=3.74kg/m2222615890º1.5m68.2m1L2=53.1mLP=68.2mK=L2/Lp×100%=77.9%23b1%6%~10%10%4Qp=C×Lp×K×1+b=3.74×68.2×77.9%×1+10%=218.6kg218.6kg41992199319934C170mC3.65~3.8kg/m160m11/kgm-1/kgm-1/kgm-10.55~0.610.050.630.52~0.550.040.58199351997160~170m17.6t3.2/kg176000×0.63-0.58×3.2=281601235