The Modern Technique of Rock BlastingWiley, 1978 - 438 halaman |
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Halaman 43
... direction of cracks and fissures . In blasting single holes at right angles to the stratifica- tion in slaty rock species , for example , one can find values corresponding to c = 1.0 kg / m3 and similar results for single holes in other ...
... direction of cracks and fissures . In blasting single holes at right angles to the stratifica- tion in slaty rock species , for example , one can find values corresponding to c = 1.0 kg / m3 and similar results for single holes in other ...
Halaman 176
... direction . The station of Stockholm ( Nacka ) , for example , for medium wave lengths has an effect of 150 kW , and is concentrated in the direction of the mainland so as to correspond to a higher value , not exceeding 300 kW . This ...
... direction . The station of Stockholm ( Nacka ) , for example , for medium wave lengths has an effect of 150 kW , and is concentrated in the direction of the mainland so as to correspond to a higher value , not exceeding 300 kW . This ...
Halaman 422
... direction of holes direction of streta disadventage discharging dislocation to , amplitud distancia , espaciamiento distance , spacing tubo múltiple distribution manifold distribución de carga distribution of charge zanja ditch ...
... direction of holes direction of streta disadventage discharging dislocation to , amplitud distancia , espaciamiento distance , spacing tubo múltiple distribution manifold distribución de carga distribution of charge zanja ditch ...
Isi
Symbols used | 16 |
Calculation of the charge General part | 28 |
Calculation of the charge Practical application | 69 |
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Istilah dan frasa umum
advance per round Ammonit ammonium nitrate AN-oil angle of breakage bench blasting bench height blasting gelatine bottom charge burn cuts calculations cartridges cm/m column charge concentration of charge connection corresponding cracks cylinder cuts damage degree of packing detonators deviation diagram distance dm³ drill hole drilled depth drilling cost drilling pattern dynamite effect electric empty hole energy example faults flash-over fragmentation frequency gives greater ground vibrations ignition pattern increased indicated instantaneous interval kg/m kg/m³ Langefors-Kihlström lb/cu.ft lb/cu.yd lb/ft loading tube lower maximum burden meter multiple-row rounds Nabit Nitroglycerin Nonel number of holes obtained ordinary delay parallel hole cuts practical burden presplitting pressure reduced risk rock blasting rock factor row of holes shock wave slope smooth blasting specific charge sq.ft stoping Sweden swelling Täby throw tion tunnel underwater blasting V₁ velocity vertical weight strength width