The Modern Technique of Rock BlastingWiley, 1978 - 438 halaman |
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Halaman 131
... compared as far as different drilling costs are concerned . It will be found that certain general conclusions to be drawn apply independently of drilling costs . It is found ( Table 5 : 5 ) that for alternative A with AN - oil the cost ...
... compared as far as different drilling costs are concerned . It will be found that certain general conclusions to be drawn apply independently of drilling costs . It is found ( Table 5 : 5 ) that for alternative A with AN - oil the cost ...
Halaman 137
... compared with a prefabricated AN - explosive ( Ammonit ) . It is at the minimum cost about 0.01 $ / m3 , that is less than 1 % of the final cost . This is unimportant compared with other factors in the picture , for instance the ...
... compared with a prefabricated AN - explosive ( Ammonit ) . It is at the minimum cost about 0.01 $ / m3 , that is less than 1 % of the final cost . This is unimportant compared with other factors in the picture , for instance the ...
Halaman 411
... compared with the difference between the various alternatives A - I . 8. The maximum burden with Ps = 1.27 is ( table 3 : 1 ) V = 7.0 m ( 23 ft ) . In A we have Ps = 1.08 for crystalline AN - oil and V = 6.5 m ( 21 ft ) . The practical ...
... compared with the difference between the various alternatives A - I . 8. The maximum burden with Ps = 1.27 is ( table 3 : 1 ) V = 7.0 m ( 23 ft ) . In A we have Ps = 1.08 for crystalline AN - oil and V = 6.5 m ( 21 ft ) . The practical ...
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