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Perimeter charge factor

It has been observed that the overbreak threshold levels decrease (from 3300 to 2500 mm/s) with the increase in advance factor (from 0.4 to 0.9). An increase in the confinement (from 0.1 to 0.25) resulted in increase in the overbreak. With the increase in the perimeter charge factor (from 1 to 3.5 kg/m )) the percentage overbreak increased from 6 to 30. [Pg.246]

SI Drill depth Perimeter charge Overbreak (%) Advance (m) Face area (m ) Advance factor Confinement... [Pg.244]

Another overbreak predictive model has also been developed considering the influence of overbreak causative factors namely, perimeter specific charge, measured ground vibration, dominant frequency ofthe measured vibration, advance factor, P-wave velocity of rock and percentage free face provided in the cut area. The developed model after linear multivariate analysis is given below ... [Pg.243]

See other pages where Perimeter charge factor is mentioned: [Pg.240]    [Pg.241]    [Pg.243]    [Pg.243]    [Pg.246]    [Pg.247]    [Pg.240]    [Pg.241]    [Pg.243]    [Pg.243]    [Pg.246]    [Pg.247]    [Pg.113]    [Pg.459]    [Pg.110]    [Pg.294]    [Pg.456]   
See also in sourсe #XX -- [ Pg.240 , Pg.243 ]



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