User's Manual

7
RIOTRONIC X+
User Manual
8.10.2. Export dev log ......................................................................................... 80
8.10.3. Test LCD .................................................................................................. 80
8.10.4. Test keyboard ......................................................................................... 80
8.10.5. Save battery info .................................................................................... 80
8.10.6. Save revision date .................................................................................. 80
8.10.7. Set GUI colour .......................................................................................... 81
8.11. Restarting the device .............................................................................. 81
8.12. Troubleshooting ...................................................................................... 81
8.13. Technical specification .......................................................................... 81
9. Annex ...................................................................................................................... 83
9.1. Rules of thumb in blasting design Recommendations for timing .... 83
9.2. Air blast and vibration .......................................................................... 86
9.2.1. Air blast ................................................................................................... 86
9.2.2. Face Bursting .......................................................................................... 86
9.2.3. Piston Effect ........................................................................................... 86
9.2.4. Lead holes ................................................................................................ 87
9.2.5. Vibration ................................................................................................. 87
9.3. Blast Design Parameters ....................................................................... 88
9.3.1. Blast-hole Diameter ............................................................................... 89
9.3.2. Bench Height........................................................................................... 90
9.3.3. Burden and Spacing ............................................................................... 90
9.3.4. Blast-hole Pattern (Staggered v Square) ............................................. 93
9.3.5. Subdrilling .............................................................................................. 94
9.3.6. Explosives Distribution ......................................................................... 95
9.3.7. Stemming ................................................................................................ 96
9.3.8. Primer placement ....................................................................................97
9.4. Influence of blast timing on fragmentation and heave ..................... 98
9.4.1. Spacing timing influence on fragmentation ....................................... 98
9.4.2. Burden timing influence on heave ....................................................... 99