Electronic Initiation in Underground Development - InfoMine
Electronic Initiation in Underground Development - InfoMine
Electronic Initiation in Underground Development - InfoMine
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<strong>Electronic</strong> <strong>Initiation</strong> <strong>in</strong> <strong>Underground</strong> <strong>Development</strong><br />
D. Scott Scovira<br />
NA Group Manager<br />
Advanced M<strong>in</strong><strong>in</strong>g Solutions<br />
Orica USA, Inc.<br />
Society of M<strong>in</strong><strong>in</strong>g Eng<strong>in</strong>eers<br />
Denver 2009
Quick History of Blast <strong>Initiation</strong>…<br />
Cap and Fuse…
Quick History of Blast <strong>Initiation</strong>…<br />
Electric Detonators…
Quick History of Blast <strong>Initiation</strong>…<br />
Non-Electric Detonators…
Conventional LP Non-Electric <strong>Initiation</strong>…
Double-Ended Non-Electric Detonators…
Non-Electric Face Round…
Quick History of Blast <strong>Initiation</strong>…<br />
<strong>Electronic</strong> <strong>Initiation</strong>…
Popcorn vs. the Hammer…
<strong>Electronic</strong> Blast<strong>in</strong>g Systems (EBS) are the<br />
Enabl<strong>in</strong>g Technology for Improv<strong>in</strong>g Upon<br />
Exist<strong>in</strong>g M<strong>in</strong><strong>in</strong>g Applications or Develop<strong>in</strong>g<br />
Entirely New Ones…<br />
• Drawpo<strong>in</strong>t <strong>Development</strong> <strong>in</strong> Block Cav<strong>in</strong>g Operations<br />
• <strong>Underground</strong> Mass Blasts<br />
• Critical and Specialty Blasts <strong>in</strong> UG Civil Construction<br />
• Head<strong>in</strong>g <strong>Development</strong> and Shaft S<strong>in</strong>k<strong>in</strong>g
<strong>Electronic</strong> Blast<strong>in</strong>g System Characteristics<br />
Programmability:<br />
– Selection of unique delay times with millisecond<br />
accuracy.<br />
– Optimization of delay times that are best suited to<br />
site specific conditions and to desired results.<br />
– Reduces <strong>in</strong>ventory as there is no need for stocks of<br />
many different delay times.
Drawbell <strong>Development</strong> <strong>in</strong> Block Cave M<strong>in</strong>es
Drawbell <strong>Development</strong> <strong>in</strong> Block Cave M<strong>in</strong>es
UG Mass Blast<strong>in</strong>g<br />
Model<strong>in</strong>g Tools are Used Extensively<br />
to Deliver Positive Outcomes…
Global Record UG EBS Blast – 24 Oct 2008<br />
GoldCorp Dome M<strong>in</strong>e <strong>in</strong> Timm<strong>in</strong>s, Canada<br />
> 2,975 <strong>Electronic</strong><br />
Detonators.<br />
> 19 Loggers Fired as<br />
1 st Synchronized<br />
UG Blast <strong>in</strong> NA.<br />
> 100,000 kg<br />
Bulk Emulsion.<br />
> 300,000 tonnes<br />
Gold Ore.<br />
> Hardly a Trace of<br />
Vibration or Air OP.
Critical Blasts <strong>in</strong> UG Civil Construction
Critical Blasts <strong>in</strong> UG Civil Construction
Civil Tunnel<strong>in</strong>g…
New EBS for UG <strong>Development</strong>…<br />
eDev <strong>Electronic</strong> Blast<strong>in</strong>g System<br />
Three Component <strong>Electronic</strong> Blast<strong>in</strong>g System<br />
- eDev Detonator<br />
- eDev Scanner<br />
- eDev Blast Box<br />
<strong>Electronic</strong><br />
Detonator<br />
Scanner<br />
Blast Box
New EBS for UG <strong>Development</strong>…<br />
eDev <strong>Electronic</strong> Detonator<br />
- High Strength Detonator<br />
10,001 Delay Times <strong>in</strong><br />
1 Millisecond Increments<br />
- Self Conta<strong>in</strong>ed Connector<br />
with Grease<br />
- Flag Tag and<br />
Bar Code Identifier<br />
- Robust Steel Wire
New EBS for UG <strong>Development</strong>…<br />
eDev Scanner<br />
- Hand Held Portable Device<br />
- Used to Scan Detonators<br />
-Assigns Detonators Delay Numbers<br />
- Delay Table with Specified Times<br />
that is Not Visible on Screen Dur<strong>in</strong>g<br />
Scann<strong>in</strong>g Operation >>><br />
Delay Times are Customized to<br />
Site Specific Blast<strong>in</strong>g Needs
New EBS for UG <strong>Development</strong>…<br />
eDev Blast Box<br />
- Four Button Operation<br />
- Large Screen - 16 l<strong>in</strong>es of text<br />
- Easy to Use<br />
- Bluetooth Connection with<br />
eDev Scanner for Data Transfer
New EBS for UG <strong>Development</strong>…<br />
- Input Specified Tunnel or Head<strong>in</strong>g Perimeters<br />
- Design Blasthole Layouts, Angles, and Bear<strong>in</strong>gs<br />
- Design, Simulate, and Optimise <strong>Initiation</strong> Designs<br />
- Download Detonator Delay Template to Scanner<br />
- Pr<strong>in</strong>t Blast Layout and <strong>Initiation</strong> Designs
eDev Detonator Delay Table<br />
Delay Number (#):<br />
> What the m<strong>in</strong>er sees on the scanner<br />
screen.<br />
Delay Gap:<br />
> The time between different delay periods.<br />
Delay Offset:<br />
> The amount of time between delays with<strong>in</strong><br />
the same period.<br />
> Manage the number of holes fir<strong>in</strong>g at the<br />
exact same time.<br />
> Does not have to be used if not desired.<br />
Delay # Delay Gap Delay Offset<br />
0 200 50<br />
1 250 50<br />
2 200 50<br />
3 200 50<br />
4 150 25<br />
5 150 25<br />
6 100 20<br />
7 100 20<br />
8 100 15<br />
9 100 15<br />
10 50 10<br />
11 50 10<br />
12 50 10<br />
13 25 5
eDev - Delay by Numbers<br />
Burn Cut Design with<br />
eDev Tim<strong>in</strong>g Rules<br />
2<br />
6<br />
5<br />
3<br />
0<br />
4<br />
5<br />
6<br />
1<br />
# ms<br />
0 0<br />
1 200<br />
2 400<br />
3 600<br />
4 800<br />
5 900<br />
5 930<br />
6 1030<br />
6 1060
eDev - Delay by Numbers<br />
Design Us<strong>in</strong>g eDev Tim<strong>in</strong>g Rules –<br />
a Possible Fir<strong>in</strong>g Sequence
eDev at the Face…
eDev at the Face…<br />
- The M<strong>in</strong>er can Scan<br />
Detonators <strong>in</strong> any<br />
Order Us<strong>in</strong>g the<br />
Preconfigured<br />
Delay Table<br />
- Only the Delay #<br />
is Displayed on<br />
the Scanner
eDev at the Face…
eDev at the Face…
eDev at the Face…
eDev at the Face…
eDev at the Face…
eDev at the Face…
eDev at the Face…
Unlock<strong>in</strong>g Competitive Advantage…<br />
On the Output Side –<br />
The Potential of Explosives…<br />
• Leverag<strong>in</strong>g explosives technology is a key<br />
to ga<strong>in</strong><strong>in</strong>g both competitive advantage and<br />
improved bottom l<strong>in</strong>e performance.<br />
• Explosives need to be viewed NOT just as<br />
an <strong>in</strong>put.<br />
• Efficiency, Effectiveness, Safety,<br />
Susta<strong>in</strong>ability…<br />
Budget<br />
Design Design<br />
$ Advance Advance Spend<br />
per<br />
vs.<br />
Unit Time Time of<br />
Advance<br />
Actual<br />
Actual<br />
$ Advance Spend<br />
per<br />
vs.<br />
Unit Time of<br />
Advance
Reduction <strong>in</strong> Tights and High Bottom…
Complete Pull Per Round…
Reduced Perimeter Overbreak…<br />
Less Scal<strong>in</strong>g $,<br />
Less Muck<strong>in</strong>g $,<br />
Less Bolt<strong>in</strong>g $,<br />
Less Mesh $,<br />
Less Shotcrete $,<br />
Less Concrete $$<br />
=<br />
Less Total $ per Unit of Advance
Short Term Blast Vibration Mgt<br />
Near Critical Structures…<br />
EBS Offset Tim<strong>in</strong>g<br />
Replaces Need<br />
for<br />
Segmented<br />
Non-Electric<br />
Sequences
Long Term Blast Vibration Mgt…
Shaft S<strong>in</strong>k<strong>in</strong>g…<br />
21 st Century Replacement for<br />
Toroid Detonators (MagnaDets)…
Clos<strong>in</strong>g Words…
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