The Modern Technique of Rock BlastingWiley, 1978 - 438 halaman |
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Halaman 13
... Parallel hole cuts 195 7.6 . Advance per round . 195 7.7 . Choice of section . 200 7.8 . Construction of stoping and ignition patterns 201 7.9 . The rhythm of the driving . 205 7.11 . Problems 7.10 . Drilling and ignition patterns 8 ...
... Parallel hole cuts 195 7.6 . Advance per round . 195 7.7 . Choice of section . 200 7.8 . Construction of stoping and ignition patterns 201 7.9 . The rhythm of the driving . 205 7.11 . Problems 7.10 . Drilling and ignition patterns 8 ...
Halaman 230
... parallel hole cuts offers the most favorable conditions . When drilling with hand - held machines it is easier to instruct new personnel and , if desired , to supply them with light templates for drilling parallel hole cuts . Ordinary V ...
... parallel hole cuts offers the most favorable conditions . When drilling with hand - held machines it is easier to instruct new personnel and , if desired , to supply them with light templates for drilling parallel hole cuts . Ordinary V ...
Halaman 251
... parallel to direction of holes . b ) acc . to K Hino . c . Crater cuts ( fig . 8:14 ) These represent in principle a completely new type of cuts and make use of the crater effect which is obtained in blasting a single hole at a free ...
... parallel to direction of holes . b ) acc . to K Hino . c . Crater cuts ( fig . 8:14 ) These represent in principle a completely new type of cuts and make use of the crater effect which is obtained in blasting a single hole at a free ...
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