Geological mapping and stand-up time estimation based on core drill evaluation using RMR89 on Tunnel 3 Sigli Banda Aceh Toll Road

Tunnel 3 of the Sigli Banda Aceh Toll Road has been designed based on several site investigations. The site investigations have not included surface geological investigations. Subsurface geological investigations have been carried out but with less detailed drill core evaluation. This will cause les...

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Autores principales:	Latif Hanif Khoirul, Husein Salahuddin, Indrawan I Gde Budi
Formato:	article
Lenguaje:	EN FR
Publicado:	EDP Sciences 2021
Materias:	Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/b506b2abd1764723ab15d74a8ee9afe9
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spelling	oai:doaj.org-article:b506b2abd1764723ab15d74a8ee9afe92021-12-02T17:11:56ZGeological mapping and stand-up time estimation based on core drill evaluation using RMR89 on Tunnel 3 Sigli Banda Aceh Toll Road2267-124210.1051/e3sconf/202132502004https://doaj.org/article/b506b2abd1764723ab15d74a8ee9afe92021-01-01T00:00:00Zhttps://www.e3s-conferences.org/articles/e3sconf/pdf/2021/101/e3sconf_icst2021_02004.pdfhttps://doaj.org/toc/2267-1242Tunnel 3 of the Sigli Banda Aceh Toll Road has been designed based on several site investigations. The site investigations have not included surface geological investigations. Subsurface geological investigations have been carried out but with less detailed drill core evaluation. This will cause less accuracy on the assessed tunnel stand-up time. This research aims to evaluate the engineering geological conditions at the tunnel construction site by conducting geological mapping with 1:5,000 scale and re-evaluating drill core using RMR89 method more thoroughly so that it can produce more accurate assessment of the tunnel stand-up time. The geological mapping result shows that the research area has three rock units, namely lapili, tuffaceous sandstones, and interbedded sandstone-siltstones, with moderate to fresh weathering degree. The drill core evaluation shows that research area has poor to good rock mass classes (34 – 67). The drill core evaluation results also indicate possible geological structures that may influence subsurface rock mass strength. The tunnel stand-up time obtained from the lowest RMR89 value for each drill core shows a value of 5 - 90 hours, implying immediate application of support system after tunnel excavation.Latif Hanif KhoirulHusein SalahuddinIndrawan I Gde BudiEDP SciencesarticleEnvironmental sciencesGE1-350ENFRE3S Web of Conferences, Vol 325, p 02004 (2021)
institution	DOAJ
collection	DOAJ
language	EN FR
topic	Environmental sciences GE1-350
spellingShingle	Environmental sciences GE1-350 Latif Hanif Khoirul Husein Salahuddin Indrawan I Gde Budi Geological mapping and stand-up time estimation based on core drill evaluation using RMR89 on Tunnel 3 Sigli Banda Aceh Toll Road
description	Tunnel 3 of the Sigli Banda Aceh Toll Road has been designed based on several site investigations. The site investigations have not included surface geological investigations. Subsurface geological investigations have been carried out but with less detailed drill core evaluation. This will cause less accuracy on the assessed tunnel stand-up time. This research aims to evaluate the engineering geological conditions at the tunnel construction site by conducting geological mapping with 1:5,000 scale and re-evaluating drill core using RMR89 method more thoroughly so that it can produce more accurate assessment of the tunnel stand-up time. The geological mapping result shows that the research area has three rock units, namely lapili, tuffaceous sandstones, and interbedded sandstone-siltstones, with moderate to fresh weathering degree. The drill core evaluation shows that research area has poor to good rock mass classes (34 – 67). The drill core evaluation results also indicate possible geological structures that may influence subsurface rock mass strength. The tunnel stand-up time obtained from the lowest RMR89 value for each drill core shows a value of 5 - 90 hours, implying immediate application of support system after tunnel excavation.
format	article
author	Latif Hanif Khoirul Husein Salahuddin Indrawan I Gde Budi
author_facet	Latif Hanif Khoirul Husein Salahuddin Indrawan I Gde Budi
author_sort	Latif Hanif Khoirul
title	Geological mapping and stand-up time estimation based on core drill evaluation using RMR89 on Tunnel 3 Sigli Banda Aceh Toll Road
title_short	Geological mapping and stand-up time estimation based on core drill evaluation using RMR89 on Tunnel 3 Sigli Banda Aceh Toll Road
title_full	Geological mapping and stand-up time estimation based on core drill evaluation using RMR89 on Tunnel 3 Sigli Banda Aceh Toll Road
title_fullStr	Geological mapping and stand-up time estimation based on core drill evaluation using RMR89 on Tunnel 3 Sigli Banda Aceh Toll Road
title_full_unstemmed	Geological mapping and stand-up time estimation based on core drill evaluation using RMR89 on Tunnel 3 Sigli Banda Aceh Toll Road
title_sort	geological mapping and stand-up time estimation based on core drill evaluation using rmr89 on tunnel 3 sigli banda aceh toll road
publisher	EDP Sciences
publishDate	2021
url	https://doaj.org/article/b506b2abd1764723ab15d74a8ee9afe9
work_keys_str_mv	AT latifhanifkhoirul geologicalmappingandstanduptimeestimationbasedoncoredrillevaluationusingrmr89ontunnel3siglibandaacehtollroad AT huseinsalahuddin geologicalmappingandstanduptimeestimationbasedoncoredrillevaluationusingrmr89ontunnel3siglibandaacehtollroad AT indrawanigdebudi geologicalmappingandstanduptimeestimationbasedoncoredrillevaluationusingrmr89ontunnel3siglibandaacehtollroad
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Geological mapping and stand-up time estimation based on core drill evaluation using RMR89 on Tunnel 3 Sigli Banda Aceh Toll Road

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