Question

Design an underground rectangular tunnel drift, in a massive granitic rock with a UCS over 100 MPa, of width: 2.7 m, height: 3.8 m, and length 13 m, using an initial Burn-Cut method to create an extra surface for the next underground Bench-Blasting operation, where the idea is roughly illustrated in Figure A3-Q2. Firing sequence for tunnel numerical order Burn cut (after ICI) Arabic numerals: short delay periods Roman numerals: half-second periods xy- section view Development heading Solid ore body Blast holes Development heading Solid ore body Blast holes Bench blasting methods (yz section view) Sketch/draw, with correct scales, your tunnel excavation problem showing all the xy, yz and xz section views together with your staged drilled blast holes. Design your burn-cut and show your design schematically with all the firing charge and detonation time delay details. Design your bench blast and show your design schematically with all the firing charge and detonation time delay details. Calculate your staged rock volumes, tonnages, burn-out and bench blasting powder factors (PF) and the total rock volume and the average PF.

          Design an underground rectangular tunnel drift, in a massive granitic rock with a UCS over 100 MPa, of width: 2.7 m, height: 3.8 m, and length 13 m, using an initial Burn-Cut method to create an extra surface for the next underground Bench-Blasting operation, where the idea is roughly illustrated in Figure A3-Q2.
Firing sequence for tunnel numerical order
Burn cut (after ICI)
Arabic numerals: short delay periods
Roman numerals: half-second periods
xy- section view
Development heading
Solid ore body
Blast holes
Development heading
Solid ore body
Blast holes
Bench blasting methods (yz section view)
Sketch/draw, with correct scales, your tunnel excavation problem showing all the xy, yz and xz section views together with your staged drilled blast holes.
Design your burn-cut and show your design schematically with all the firing charge and detonation time delay details.
Design your bench blast and show your design schematically with all the firing charge and detonation time delay details.
Calculate your staged rock volumes, tonnages, burn-out and bench blasting powder factors (PF) and the total rock volume and the average PF.

Design an underground rectangular tunnel drift, in a massive granitic rock with a UCS over 100 MPa, of width: 2.7 m, height: 3.8 m, and length 13 m, using an initial Burn-Cut method to create an extra surface for the next underground Bench-Blasting operation, where the idea is roughly illustrated in Figure A3-Q2.
Firing sequence for tunnel numerical order
Burn cut (after ICI)
Arabic numerals: short delay periods
Roman numerals: half-second periods
xy- section view
Development heading
Solid ore body
Blast holes
Development heading
Solid ore body
Blast holes
Bench blasting methods (yz section view)
Sketch/draw, with correct scales, your tunnel excavation problem showing all the xy, yz and xz section views together with your staged drilled blast holes.
Design your burn-cut and show your design schematically with all the firing charge and detonation time delay details.
Design your bench blast and show your design schematically with all the firing charge and detonation time delay details.
Calculate your staged rock volumes, tonnages, burn-out and bench blasting powder factors (PF) and the total rock volume and the average PF.

Added by Crystal D.

Question

Please give Ace some feedback