In this study, for the case of Kencana-Halmahera underground gold mine that apply for cut and fill method
combined with a long holestope, the using of paste fill designed for the strength (UCS) in the range of 0.5-2 MPa.
Where the requirements for ore mining besides pasta walls must meet a minimum 0.5 MPa UCS, while for the
mining under paste then the UCS is at least 1.2 MPa.
Paste fill block stability analysis on each block length L=16 moves in the same direction (north and south walls)
and L = 35 (west wall) is FS = 2.87 and 2.63 on the 6% cement mixture 10m high in a stable condition, FS = 6.20
and 5.90 on the 12% cement mixture a high 5m of in stable condition, and FS = 7.36 and 7.01 on the 14% cement
mixture 5m high also in stable condition. So the next blocks stope mining can be done on the condition of life paste
fill 7 days.
In the conditions of paste fill with 7 days of age it is concluded for a high dimensional paste fill block with 20m
length variation stance towards L = 16 and L = 35 not stable because of the width of the stable block pasta varies.
Another consideration to ignore the recommendation of previous researchers (Mitchell et al., 1982, Smith et al.,
1983) it is suggested mining done after age paste fill reached above 14 days because at that age the value of UCS
In this study, for the case of Kencana-Halmahera underground gold mine that apply for cut and fill methodcombined with a long holestope, the using of paste fill designed for the strength (UCS) in the range of 0.5-2 MPa.Where the requirements for ore mining besides pasta walls must meet a minimum 0.5 MPa UCS, while for themining under paste then the UCS is at least 1.2 MPa.Paste fill block stability analysis on each block length L=16 moves in the same direction (north and south walls)and L = 35 (west wall) is FS = 2.87 and 2.63 on the 6% cement mixture 10m high in a stable condition, FS = 6.20and 5.90 on the 12% cement mixture a high 5m of in stable condition, and FS = 7.36 and 7.01 on the 14% cementmixture 5m high also in stable condition. So the next blocks stope mining can be done on the condition of life pastefill 7 days.In the conditions of paste fill with 7 days of age it is concluded for a high dimensional paste fill block with 20mlength variation stance towards L = 16 and L = 35 not stable because of the width of the stable block pasta varies.Another consideration to ignore the recommendation of previous researchers (Mitchell et al., 1982, Smith et al.,1983) it is suggested mining done after age paste fill reached above 14 days because at that age the value of UCS
การแปล กรุณารอสักครู่..
In this study, for the case of Kencana-Halmahera underground gold mine that apply for cut and fill method
combined with a long holestope, the using of paste fill designed for the strength (UCS) in the range of 0.5-2 MPa.
Where the requirements for ore mining besides pasta walls must meet a minimum 0.5 MPa UCS, while for the
mining under paste then the UCS is at least 1.2 MPa.
Paste fill block stability analysis on each block length L=16 moves in the same direction (north and south walls)
and L = 35 (west wall) is FS = 2.87 and 2.63 on the 6% cement mixture 10m high in a stable condition, FS = 6.20
and 5.90 on the 12% cement mixture a high 5m of in stable condition, and FS = 7.36 and 7.01 on the 14% cement
mixture 5m high also in stable condition. So the next blocks stope mining can be done on the condition of life paste
fill 7 days.
In the conditions of paste fill with 7 days of age it is concluded for a high dimensional paste fill block with 20m
length variation stance towards L = 16 and L = 35 not stable because of the width of the stable block pasta varies.
Another consideration to ignore the recommendation of previous researchers (Mitchell et al., 1982, Smith et al.,
1983) it is suggested mining done after age paste fill reached above 14 days because at that age the value of UCS
การแปล กรุณารอสักครู่..