9
6. TPL spray coatings for shotcrete or mesh as an alter-
native to sealing with shotcrete.
7. Grouting injection for water sealing, especially in and
around shafts and longest-term infrastructures.
8. Instrumentation and monitoring
9. Sacrificial bolts and coupons
CURRENT BOLT TESTING
Our current action plan to over the past year has been to
try out several different bolts in highly corrosive areas for
pull testing and overcoring to test for encapsulation voids
and for degree of corrosion over time(see Figures 15 and
Figure 16). The results for corrosion over 5 years will give
us more accurate data, as we are testing various type bolts
with various corrosion resistant coatings like epoxy and
thermoplastic.
The resins used will also be tested for heat capability
and suitability These have been provided from different
vendors to a true may give us a better idea on encapsulation.
Future Research
During this investigation, we confirmed the three main
corrosion factors affecting ground support at Resolution
Copper are presence of water, oxygen saturation, and expo-
sure of corrosive iron and steel (see Figure 17). Currently
there are not enough tools available in the market to quickly
quantify the corrosion level in underground excavations
with an highly corrosive environment in the mine.
Table 5 summarizes what Resolution Copper must
address to mitigate the effects of corrosion. It fully comple-
ments the scope of the wide range of conditions necessary to
minimize corrosion and extend ground support longevity.
Figure 14. Expected longevity of coating materials based
on percent sulfides (S2) and potential ph based on limited
testing and industry OEM information
Figure 15. Various type bolts and coatings for future
corrosion overcoring and testing, Old Electrical Room, 68L
Figure 16. Pumping 2-part resin for test bolts in Old
Electrical room, 68L
Figure 17. Corrosion triangle showing how any of the sides
can be minimized or eliminated, this will prevent damage to
ground support
6. TPL spray coatings for shotcrete or mesh as an alter-
native to sealing with shotcrete.
7. Grouting injection for water sealing, especially in and
around shafts and longest-term infrastructures.
8. Instrumentation and monitoring
9. Sacrificial bolts and coupons
CURRENT BOLT TESTING
Our current action plan to over the past year has been to
try out several different bolts in highly corrosive areas for
pull testing and overcoring to test for encapsulation voids
and for degree of corrosion over time(see Figures 15 and
Figure 16). The results for corrosion over 5 years will give
us more accurate data, as we are testing various type bolts
with various corrosion resistant coatings like epoxy and
thermoplastic.
The resins used will also be tested for heat capability
and suitability These have been provided from different
vendors to a true may give us a better idea on encapsulation.
Future Research
During this investigation, we confirmed the three main
corrosion factors affecting ground support at Resolution
Copper are presence of water, oxygen saturation, and expo-
sure of corrosive iron and steel (see Figure 17). Currently
there are not enough tools available in the market to quickly
quantify the corrosion level in underground excavations
with an highly corrosive environment in the mine.
Table 5 summarizes what Resolution Copper must
address to mitigate the effects of corrosion. It fully comple-
ments the scope of the wide range of conditions necessary to
minimize corrosion and extend ground support longevity.
Figure 14. Expected longevity of coating materials based
on percent sulfides (S2) and potential ph based on limited
testing and industry OEM information
Figure 15. Various type bolts and coatings for future
corrosion overcoring and testing, Old Electrical Room, 68L
Figure 16. Pumping 2-part resin for test bolts in Old
Electrical room, 68L
Figure 17. Corrosion triangle showing how any of the sides
can be minimized or eliminated, this will prevent damage to
ground support