The Modern Technique of Rock BlastingWiley, 1978 - 438 halaman |
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Halaman 69
... given for practical ap- plications in surface and underground operations . Since the material is mainly provided in tables , the work is reduced to selecting the proper table and figures for the actual case to be considered . It should ...
... given for practical ap- plications in surface and underground operations . Since the material is mainly provided in tables , the work is reduced to selecting the proper table and figures for the actual case to be considered . It should ...
Halaman 171
... given in figs . 6:29 and 6:30 . The corresponding values for the burden ( V ) are given for 32 mm drill holes in table 6 : 7 , and for 50 and 62 mm in table 6 : 8 for some actual values for the width ( B ) and for varying depths . The ...
... given in figs . 6:29 and 6:30 . The corresponding values for the burden ( V ) are given for 32 mm drill holes in table 6 : 7 , and for 50 and 62 mm in table 6 : 8 for some actual values for the width ( B ) and for varying depths . The ...
Halaman 252
... given in table 8 : 4 ( p . 241 ) . Recent development with cylinder cuts , avoiding the burning effect , have revealed potentialties for such big advances that the drilling equipment , and , in many cases , also the training of the ...
... given in table 8 : 4 ( p . 241 ) . Recent development with cylinder cuts , avoiding the burning effect , have revealed potentialties for such big advances that the drilling equipment , and , in many cases , also the training of the ...
Isi
Symbols used | 16 |
Calculation of the charge General part | 28 |
Calculation of the charge Practical application | 69 |
Hak Cipta | |
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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