Disk cutter drilling performance and optimization methods, rock strength correlation and field data analysis ...
Drilling a rock near the ground surface has an increasing demand for natural resources exploration, such as the recovery of minerals or crushed rock, the application of tunneling in civil engineering, etc. A recent field mine drilling at Baie Verte, located in the North of Newfoundland, Canada, invo...
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| Format: | Text |
| Language: | English |
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Memorial University of Newfoundland
2023
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| Online Access: | https://dx.doi.org/10.48336/ayt9-ps93 https://research.library.mun.ca/15853/ |
| Summary: | Drilling a rock near the ground surface has an increasing demand for natural resources exploration, such as the recovery of minerals or crushed rock, the application of tunneling in civil engineering, etc. A recent field mine drilling at Baie Verte, located in the North of Newfoundland, Canada, involved a diamond drilling hole (DDH) for core recovery, which was intended for lithology analysis and as a pilot hole and a large diameter hole drilling (LDH) for ore excavation. This thesis includes an investigation of mining drilling on the LDH to determine abnormal drilling low rate of penetration (ROP) performance at a specific depth interval, where drilling data was analyzed based on each lithology. Also rock material characterization was conducted on granite rock to introduce a new method of Semi-Point Load Strength Index (Semi-PLSI) for estimation of the rock strength, and a detailed analysis of the effect of microwave irradiation on rock properties as one of the influencing technology of an increasing ROP. ... |
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