The Modern Technique of Rock BlastingWiley, 1978 - 438 halaman |
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Halaman 88
... cartridges To facilitate the loading of drill holes long , rigid cartridges which are pushed into the drill hole without being deformed are sometimes used . The maxi- mum degree of ... cartridges Blowing in the cartridges with compressed.
... cartridges To facilitate the loading of drill holes long , rigid cartridges which are pushed into the drill hole without being deformed are sometimes used . The maxi- mum degree of ... cartridges Blowing in the cartridges with compressed.
Halaman 89
... cartridges 60 m / s ( 200 ft / s ) . According to Berthmann and Christmann 25 mm ( 1 ′′ ) cart- ridges of this explosive detonate at 88 m / s ( 300 ft / s ) and 30 mm ( 1.2 ′′ ) cartridges at 103 m / s ( 340 ft / s ) . In spite of the ...
... cartridges 60 m / s ( 200 ft / s ) . According to Berthmann and Christmann 25 mm ( 1 ′′ ) cart- ridges of this explosive detonate at 88 m / s ( 300 ft / s ) and 30 mm ( 1.2 ′′ ) cartridges at 103 m / s ( 340 ft / s ) . In spite of the ...
Halaman 94
... cartridges will be packed to a high density . There are apparatus for 22 , 25 and 29 mm ( 3 , 1 and 13 " ) cartridges and experiments are being made with 40 mm ( 12 " ) cartridges . Loaders for 25 mm ( 1 ′′ ) cartridges can be used for ...
... cartridges will be packed to a high density . There are apparatus for 22 , 25 and 29 mm ( 3 , 1 and 13 " ) cartridges and experiments are being made with 40 mm ( 12 " ) cartridges . Loaders for 25 mm ( 1 ′′ ) cartridges can be used for ...
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