Rock Strength Testing of Drill Core Samples From Kiirunavaara Below Level 1365
The geotechnical parameters of the different lithologies are of great importance regarding mining, infrastructures development and safety. The main aims of this thesis project are the evaluation of the previously acquired point load tests (PLT) data and the acquisition of a larger set for the variou...
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Uppsala universitet, Institutionen för geovetenskaper
2022
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ftuppsalauniv:oai:DiVA.org:uu-489475 2023-05-15T17:04:18+02:00 Rock Strength Testing of Drill Core Samples From Kiirunavaara Below Level 1365 Berghållfasthetsprovning av borrkärnprover frånKiirunavaara under nivå 1365 i Kiruna, norra Sverige Doulamis, Giorgios 2022 application/pdf http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-489475 eng eng Uppsala universitet, Institutionen för geovetenskaper Examensarbete vid Institutionen för geovetenskaper, 1650-6553 585 orcid:0000-0002-6961-0128 http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-489475 info:eu-repo/semantics/openAccess Kiirunavaara Point Load test Leeb hardness test intact rock strength correlation factor Geology Geologi Student thesis info:eu-repo/semantics/bachelorThesis text 2022 ftuppsalauniv 2023-02-23T22:01:07Z The geotechnical parameters of the different lithologies are of great importance regarding mining, infrastructures development and safety. The main aims of this thesis project are the evaluation of the previously acquired point load tests (PLT) data and the acquisition of a larger set for the various lithologies and alterations. In addition, the correlation to the Leeb Hardness test (LHT) method, and the determination of correlation factors (K) for estimating the uniaxial compressive strength (UCS) index from PLT data for various lithologies were evaluated. In total, 5236 previously PL tested samples, 1113 newly PL tested samples and 569 LHT measurements were obtained. The results showed that the highest values come from the footwall lithologies (Sp) ranging between 11-19 MPa, while the hanging wall lithologies (Qp) fall in range 10-14 MPa and the different ore types between 6-11 MPa. The correlation between PLT and LHT was poor, with the results completely overlapping for all country rock lithologies in the range 800-900 LHD, while the ore types fall in the range 600-700, and anhydrite at 500 LHD. On the other hand, the correlation factors K for the lithologies tested vary between 13-20 for the weaker and more altered rock types and 25-30 for the stronger ones, correlating well when compared to the actual UCS values found in the literature. In conclusion, it is evident that the LHT is not able to substitute the PLT as it captures different properties of the rock. The conversion from PLT to UCS gave rather accurate results, with slightly different correlation factors K for the tested lithologies. Bachelor Thesis Kiruna Norra Sverige Uppsala University: Publications (DiVA) Kiruna |
institution |
Open Polar |
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Uppsala University: Publications (DiVA) |
op_collection_id |
ftuppsalauniv |
language |
English |
topic |
Kiirunavaara Point Load test Leeb hardness test intact rock strength correlation factor Geology Geologi |
spellingShingle |
Kiirunavaara Point Load test Leeb hardness test intact rock strength correlation factor Geology Geologi Doulamis, Giorgios Rock Strength Testing of Drill Core Samples From Kiirunavaara Below Level 1365 |
topic_facet |
Kiirunavaara Point Load test Leeb hardness test intact rock strength correlation factor Geology Geologi |
description |
The geotechnical parameters of the different lithologies are of great importance regarding mining, infrastructures development and safety. The main aims of this thesis project are the evaluation of the previously acquired point load tests (PLT) data and the acquisition of a larger set for the various lithologies and alterations. In addition, the correlation to the Leeb Hardness test (LHT) method, and the determination of correlation factors (K) for estimating the uniaxial compressive strength (UCS) index from PLT data for various lithologies were evaluated. In total, 5236 previously PL tested samples, 1113 newly PL tested samples and 569 LHT measurements were obtained. The results showed that the highest values come from the footwall lithologies (Sp) ranging between 11-19 MPa, while the hanging wall lithologies (Qp) fall in range 10-14 MPa and the different ore types between 6-11 MPa. The correlation between PLT and LHT was poor, with the results completely overlapping for all country rock lithologies in the range 800-900 LHD, while the ore types fall in the range 600-700, and anhydrite at 500 LHD. On the other hand, the correlation factors K for the lithologies tested vary between 13-20 for the weaker and more altered rock types and 25-30 for the stronger ones, correlating well when compared to the actual UCS values found in the literature. In conclusion, it is evident that the LHT is not able to substitute the PLT as it captures different properties of the rock. The conversion from PLT to UCS gave rather accurate results, with slightly different correlation factors K for the tested lithologies. |
format |
Bachelor Thesis |
author |
Doulamis, Giorgios |
author_facet |
Doulamis, Giorgios |
author_sort |
Doulamis, Giorgios |
title |
Rock Strength Testing of Drill Core Samples From Kiirunavaara Below Level 1365 |
title_short |
Rock Strength Testing of Drill Core Samples From Kiirunavaara Below Level 1365 |
title_full |
Rock Strength Testing of Drill Core Samples From Kiirunavaara Below Level 1365 |
title_fullStr |
Rock Strength Testing of Drill Core Samples From Kiirunavaara Below Level 1365 |
title_full_unstemmed |
Rock Strength Testing of Drill Core Samples From Kiirunavaara Below Level 1365 |
title_sort |
rock strength testing of drill core samples from kiirunavaara below level 1365 |
publisher |
Uppsala universitet, Institutionen för geovetenskaper |
publishDate |
2022 |
url |
http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-489475 |
geographic |
Kiruna |
geographic_facet |
Kiruna |
genre |
Kiruna Norra Sverige |
genre_facet |
Kiruna Norra Sverige |
op_relation |
Examensarbete vid Institutionen för geovetenskaper, 1650-6553 585 orcid:0000-0002-6961-0128 http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-489475 |
op_rights |
info:eu-repo/semantics/openAccess |
_version_ |
1766058374157303808 |