The Modern Technique of Rock BlastingWiley, 1978 - 438 halaman |
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Halaman 30
... connection can be made general by introducing r = R / Q1 / 3 and the law of conformity gives p = f ( R / Q1 / 3 ) ( 2 : 2 ) This is the reason why the law of conformity can be applied also to the crushing zone in the two cases mentioned ...
... connection can be made general by introducing r = R / Q1 / 3 and the law of conformity gives p = f ( R / Q1 / 3 ) ( 2 : 2 ) This is the reason why the law of conformity can be applied also to the crushing zone in the two cases mentioned ...
Halaman 361
... Connections 11. Why are the series - connections mostly used in Sweden ? What are the advantages ? 12. Do they not require a very high ohm - resistance to the earth for , say , 160 to 200 shots fired at once ? 13. Is it not safer to ...
... Connections 11. Why are the series - connections mostly used in Sweden ? What are the advantages ? 12. Do they not require a very high ohm - resistance to the earth for , say , 160 to 200 shots fired at once ? 13. Is it not safer to ...
Halaman 368
... connected up is in contact with the transmitter cap , which gives each Nonel connection a standard quality which does not change under the effect of either external conditions or varying degrees of professional skill . For connection ...
... connected up is in contact with the transmitter cap , which gives each Nonel connection a standard quality which does not change under the effect of either external conditions or varying degrees of professional skill . For connection ...
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