Surface and subsurface engineering geological mapping for empirical designs of excavation method and support system of Tunnel 6 of Jakarta-Bandung high speed railway, Indonesia

Empirical design of support system at the Tunnel 6 of the Jakarta – Bandung high-speed railway was based on the Basic Quality (BQ) system, which had not been adopted in Indonesia. This research was carried out to better understand the rock mass quality at the tunnel construction site by comparing ro...

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Autores principales:	Malda Octavika, Indrawan I Gde Budi, Akmaluddin Akmaluddin
Formato:	article
Lenguaje:	EN FR
Publicado:	EDP Sciences 2021
Materias:	Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/64bf5f8087b14257a501dbc24d8d675a
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spelling	oai:doaj.org-article:64bf5f8087b14257a501dbc24d8d675a2021-12-02T17:11:56ZSurface and subsurface engineering geological mapping for empirical designs of excavation method and support system of Tunnel 6 of Jakarta-Bandung high speed railway, Indonesia2267-124210.1051/e3sconf/202132501018https://doaj.org/article/64bf5f8087b14257a501dbc24d8d675a2021-01-01T00:00:00Zhttps://www.e3s-conferences.org/articles/e3sconf/pdf/2021/101/e3sconf_icst2021_01018.pdfhttps://doaj.org/toc/2267-1242Empirical design of support system at the Tunnel 6 of the Jakarta – Bandung high-speed railway was based on the Basic Quality (BQ) system, which had not been adopted in Indonesia. This research was carried out to better understand the rock mass quality at the tunnel construction site by comparing rock mass quality determined by the BQ system to that determined by two more popular rock mass classifications, namely the Geological Strength Index (GSI) and Rock Mass Rating (RMR). Surface and subsurface engineering geological mapping were carried out and tunnel excavation method and support system were proposed. The engineering geological model of the BQ, GSI, and RMR systems showed that the sedimentary rock masses of the Miocene Jatiluhur Formation generally had poor to very poor quality, while those of the Quaternary Volcanic Formation had very poor to good quality. Based on the RMR, the stand-up time values of the sedimentary rock masses were predicted to be relatively low as compared with those of the Quaternary Volcanic Formation, implying requirement of a relatively quick support system installation after excavation. In general, a combination of systematic bolt, shotcrete and steel ribs is the recommended support system for this tunnel.Malda OctavikaIndrawan I Gde BudiAkmaluddin AkmaluddinEDP SciencesarticleEnvironmental sciencesGE1-350ENFRE3S Web of Conferences, Vol 325, p 01018 (2021)
institution	DOAJ
collection	DOAJ
language	EN FR
topic	Environmental sciences GE1-350
spellingShingle	Environmental sciences GE1-350 Malda Octavika Indrawan I Gde Budi Akmaluddin Akmaluddin Surface and subsurface engineering geological mapping for empirical designs of excavation method and support system of Tunnel 6 of Jakarta-Bandung high speed railway, Indonesia
description	Empirical design of support system at the Tunnel 6 of the Jakarta – Bandung high-speed railway was based on the Basic Quality (BQ) system, which had not been adopted in Indonesia. This research was carried out to better understand the rock mass quality at the tunnel construction site by comparing rock mass quality determined by the BQ system to that determined by two more popular rock mass classifications, namely the Geological Strength Index (GSI) and Rock Mass Rating (RMR). Surface and subsurface engineering geological mapping were carried out and tunnel excavation method and support system were proposed. The engineering geological model of the BQ, GSI, and RMR systems showed that the sedimentary rock masses of the Miocene Jatiluhur Formation generally had poor to very poor quality, while those of the Quaternary Volcanic Formation had very poor to good quality. Based on the RMR, the stand-up time values of the sedimentary rock masses were predicted to be relatively low as compared with those of the Quaternary Volcanic Formation, implying requirement of a relatively quick support system installation after excavation. In general, a combination of systematic bolt, shotcrete and steel ribs is the recommended support system for this tunnel.
format	article
author	Malda Octavika Indrawan I Gde Budi Akmaluddin Akmaluddin
author_facet	Malda Octavika Indrawan I Gde Budi Akmaluddin Akmaluddin
author_sort	Malda Octavika
title	Surface and subsurface engineering geological mapping for empirical designs of excavation method and support system of Tunnel 6 of Jakarta-Bandung high speed railway, Indonesia
title_short	Surface and subsurface engineering geological mapping for empirical designs of excavation method and support system of Tunnel 6 of Jakarta-Bandung high speed railway, Indonesia
title_full	Surface and subsurface engineering geological mapping for empirical designs of excavation method and support system of Tunnel 6 of Jakarta-Bandung high speed railway, Indonesia
title_fullStr	Surface and subsurface engineering geological mapping for empirical designs of excavation method and support system of Tunnel 6 of Jakarta-Bandung high speed railway, Indonesia
title_full_unstemmed	Surface and subsurface engineering geological mapping for empirical designs of excavation method and support system of Tunnel 6 of Jakarta-Bandung high speed railway, Indonesia
title_sort	surface and subsurface engineering geological mapping for empirical designs of excavation method and support system of tunnel 6 of jakarta-bandung high speed railway, indonesia
publisher	EDP Sciences
publishDate	2021
url	https://doaj.org/article/64bf5f8087b14257a501dbc24d8d675a
work_keys_str_mv	AT maldaoctavika surfaceandsubsurfaceengineeringgeologicalmappingforempiricaldesignsofexcavationmethodandsupportsystemoftunnel6ofjakartabandunghighspeedrailwayindonesia AT indrawanigdebudi surfaceandsubsurfaceengineeringgeologicalmappingforempiricaldesignsofexcavationmethodandsupportsystemoftunnel6ofjakartabandunghighspeedrailwayindonesia AT akmaluddinakmaluddin surfaceandsubsurfaceengineeringgeologicalmappingforempiricaldesignsofexcavationmethodandsupportsystemoftunnel6ofjakartabandunghighspeedrailwayindonesia
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Surface and subsurface engineering geological mapping for empirical designs of excavation method and support system of Tunnel 6 of Jakarta-Bandung high speed railway, Indonesia

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