The Modern Technique of Rock BlastingWiley, 1978 - 438 halaman |
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Halaman 173
... electric ignition With electric ignition one must consider the risk of haphazard ignition by current leakage , lightning , static electricity , induction ( capacitive influence ) from power lines or ignition by radio frequencies . The ...
... electric ignition With electric ignition one must consider the risk of haphazard ignition by current leakage , lightning , static electricity , induction ( capacitive influence ) from power lines or ignition by radio frequencies . The ...
Halaman 174
U. Langefors, Björn Kihlström. b . Static electricity Electric detonators may be ignited by static electricity generated when blowing dry powderous substances such as sand , ammonium nitrate ( AN ) etc. through tubes of material that is ...
U. Langefors, Björn Kihlström. b . Static electricity Electric detonators may be ignited by static electricity generated when blowing dry powderous substances such as sand , ammonium nitrate ( AN ) etc. through tubes of material that is ...
Halaman 423
... electric circuit electric detonator electric ignition ( firing ) electric network electricity elevator energy factor engine operator jordfyllnad effekt verkningsgrad elasticitet elasticitetsgräns strömkrets elsprängkapsel elektrisk ...
... electric circuit electric detonator electric ignition ( firing ) electric network electricity elevator energy factor engine operator jordfyllnad effekt verkningsgrad elasticitet elasticitetsgräns strömkrets elsprängkapsel elektrisk ...
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