The Modern Technique of Rock BlastingWiley, 1978 - 438 halaman |
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Halaman 146
... meter . FIG . 6 : 5 . Earth - fault tester JP - 3 ( " Cur- rent leakage tester " ) . deteriorate with time when in contact with ingredients of the explosive . Therefore for holes that have to remain loaded for several days , the use of ...
... meter . FIG . 6 : 5 . Earth - fault tester JP - 3 ( " Cur- rent leakage tester " ) . deteriorate with time when in contact with ingredients of the explosive . Therefore for holes that have to remain loaded for several days , the use of ...
Halaman 249
... meter . The other holes are fully loaded . Ignition of hole No. 1 should be done with an instantaneous detonator close to the face of the tunnel . There is little or no reason to include or enumerate the number of varia- tions that can ...
... meter . The other holes are fully loaded . Ignition of hole No. 1 should be done with an instantaneous detonator close to the face of the tunnel . There is little or no reason to include or enumerate the number of varia- tions that can ...
Halaman 344
... meter but also with a so - called earth - fault tester . When blasting in salt water it is recommended to have an instrument for testing the insulation as well . The earth - fault tester ( fig . 6 : 5 ) has been constructed by Enoksson ...
... meter but also with a so - called earth - fault tester . When blasting in salt water it is recommended to have an instrument for testing the insulation as well . The earth - fault tester ( fig . 6 : 5 ) has been constructed by Enoksson ...
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