The Modern Technique of Rock BlastingWiley, 1978 - 438 halaman |
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Halaman 21
... explosive is many times greater than for gun powder . For a high explosive the shock wave energy most probably amounts only to 5-15 % of the total energy of the explosive at a theoretical estimate . Fogelson and others have measured the ...
... explosive is many times greater than for gun powder . For a high explosive the shock wave energy most probably amounts only to 5-15 % of the total energy of the explosive at a theoretical estimate . Fogelson and others have measured the ...
Halaman 137
... explosive , its loading and distribution in the drill hole . The minimum cost will be achieved with a concentrated bottom charge of dynamite and a column charge of am- monium nitrate explosive . With bench heights of up to 14 m ( 46 ft ) ...
... explosive , its loading and distribution in the drill hole . The minimum cost will be achieved with a concentrated bottom charge of dynamite and a column charge of am- monium nitrate explosive . With bench heights of up to 14 m ( 46 ft ) ...
Halaman 411
... explosive per hole is : 4.7 · 0.5V + 3.8 · 0.13 · 2.3 V = 2.35V + 1.2V = 3.55 V. With Nabit cartridges in the column = 1.0 · 502 · 10 - 3 / 1.27 = 2.0 kg / m at a cost ( table 5 : 1 ) of 0.38 $ / kg the total cost of the explosive in a ...
... explosive per hole is : 4.7 · 0.5V + 3.8 · 0.13 · 2.3 V = 2.35V + 1.2V = 3.55 V. With Nabit cartridges in the column = 1.0 · 502 · 10 - 3 / 1.27 = 2.0 kg / m at a cost ( table 5 : 1 ) of 0.38 $ / kg the total cost of the explosive in a ...
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