The Modern Technique of Rock BlastingWiley, 1978 - 438 halaman |
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Halaman 30
... gives p = f ( R / Q1 / 3 ) ( 2 : 2 ) This is the reason why the law of conformity can be applied also to the crushing zone in the two cases mentioned above . The pressure in this " fluid " causes the lateral loosening which is called ...
... gives p = f ( R / Q1 / 3 ) ( 2 : 2 ) This is the reason why the law of conformity can be applied also to the crushing zone in the two cases mentioned above . The pressure in this " fluid " causes the lateral loosening which is called ...
Halaman 61
... gives by the simple relation Q - 1.3 V the amount of the bottom charge . For the total charge Q , the reading is made proceeding from the burden on the horizontal scale , up to the value for the rock factor c and then turning right to ...
... gives by the simple relation Q - 1.3 V the amount of the bottom charge . For the total charge Q , the reading is made proceeding from the burden on the horizontal scale , up to the value for the rock factor c and then turning right to ...
Halaman 255
... gives the relation x between the experimental depth of hole corresponding to 95 % mean advance and the calculated value . The values calculated ( Hcal ) are taken from table 8 : 4 , or for the burn cuts from table 8 : 5 . When the ...
... gives the relation x between the experimental depth of hole corresponding to 95 % mean advance and the calculated value . The values calculated ( Hcal ) are taken from table 8 : 4 , or for the burn cuts from table 8 : 5 . When 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