A Study of the Effects of Geological Conditions on Korean Tunnel Construction Time Using the Updated NTNU Drill and Blast Prediction Model

This paper analyses the construction time and advance rate of a 3 km long drill and blast tunnel under various geological conditions using an upgraded NTNU drill and blast prediction model. The analysis was carried out for the five types of Korean tunnel supports according to the rock mass quality (...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Yangkyun Kim, Sean Seungwon Lee
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	construction time advance rate NTNU drill and blast model tunnel support equivalent rock mass quality Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/070ac50b2fae448ea81c0ee9371e0aea
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:070ac50b2fae448ea81c0ee9371e0aea
record_format	dspace
spelling	oai:doaj.org-article:070ac50b2fae448ea81c0ee9371e0aea2021-11-11T15:09:46ZA Study of the Effects of Geological Conditions on Korean Tunnel Construction Time Using the Updated NTNU Drill and Blast Prediction Model10.3390/app1121100962076-3417https://doaj.org/article/070ac50b2fae448ea81c0ee9371e0aea2021-10-01T00:00:00Zhttps://www.mdpi.com/2076-3417/11/21/10096https://doaj.org/toc/2076-3417This paper analyses the construction time and advance rate of a 3 km long drill and blast tunnel under various geological conditions using an upgraded NTNU drill and blast prediction model. The analysis was carried out for the five types of Korean tunnel supports according to the rock mass quality (from Type 1, meaning a very good rock mass quality; to Type 5, meaning a very poor rock mass quality). Four kinds of rock properties, as well as the rock mass quality, for each tunnel support type were applied to simulate different geological conditions based on previous studies and the NTNU model. The construction time was classified into five categories: basic, standard, gross, tunnel and total, according to the operation characteristics to more effectively analyse the time. In addition, to consider the actual geological conditions in tunnelling, the construction times for the three mixed geological cases were analysed. It was found that total construction time of a tunnel covering all the operations and site preparations with a very poor rock mass quality was more than twice that of a tunnel with a very good rock mass quality for the same tunnel length. It is thought that this study can be a useful approach to estimating the construction time and advance rate in the planning or design stage of a drill and blast tunnel.Yangkyun KimSean Seungwon LeeMDPI AGarticleconstruction timeadvance rateNTNU drill and blast modeltunnel supportequivalent rock mass qualityTechnologyTEngineering (General). Civil engineering (General)TA1-2040Biology (General)QH301-705.5PhysicsQC1-999ChemistryQD1-999ENApplied Sciences, Vol 11, Iss 10096, p 10096 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	construction time advance rate NTNU drill and blast model tunnel support equivalent rock mass quality Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999
spellingShingle	construction time advance rate NTNU drill and blast model tunnel support equivalent rock mass quality Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999 Yangkyun Kim Sean Seungwon Lee A Study of the Effects of Geological Conditions on Korean Tunnel Construction Time Using the Updated NTNU Drill and Blast Prediction Model
description	This paper analyses the construction time and advance rate of a 3 km long drill and blast tunnel under various geological conditions using an upgraded NTNU drill and blast prediction model. The analysis was carried out for the five types of Korean tunnel supports according to the rock mass quality (from Type 1, meaning a very good rock mass quality; to Type 5, meaning a very poor rock mass quality). Four kinds of rock properties, as well as the rock mass quality, for each tunnel support type were applied to simulate different geological conditions based on previous studies and the NTNU model. The construction time was classified into five categories: basic, standard, gross, tunnel and total, according to the operation characteristics to more effectively analyse the time. In addition, to consider the actual geological conditions in tunnelling, the construction times for the three mixed geological cases were analysed. It was found that total construction time of a tunnel covering all the operations and site preparations with a very poor rock mass quality was more than twice that of a tunnel with a very good rock mass quality for the same tunnel length. It is thought that this study can be a useful approach to estimating the construction time and advance rate in the planning or design stage of a drill and blast tunnel.
format	article
author	Yangkyun Kim Sean Seungwon Lee
author_facet	Yangkyun Kim Sean Seungwon Lee
author_sort	Yangkyun Kim
title	A Study of the Effects of Geological Conditions on Korean Tunnel Construction Time Using the Updated NTNU Drill and Blast Prediction Model
title_short	A Study of the Effects of Geological Conditions on Korean Tunnel Construction Time Using the Updated NTNU Drill and Blast Prediction Model
title_full	A Study of the Effects of Geological Conditions on Korean Tunnel Construction Time Using the Updated NTNU Drill and Blast Prediction Model
title_fullStr	A Study of the Effects of Geological Conditions on Korean Tunnel Construction Time Using the Updated NTNU Drill and Blast Prediction Model
title_full_unstemmed	A Study of the Effects of Geological Conditions on Korean Tunnel Construction Time Using the Updated NTNU Drill and Blast Prediction Model
title_sort	study of the effects of geological conditions on korean tunnel construction time using the updated ntnu drill and blast prediction model
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/070ac50b2fae448ea81c0ee9371e0aea
work_keys_str_mv	AT yangkyunkim astudyoftheeffectsofgeologicalconditionsonkoreantunnelconstructiontimeusingtheupdatedntnudrillandblastpredictionmodel AT seanseungwonlee astudyoftheeffectsofgeologicalconditionsonkoreantunnelconstructiontimeusingtheupdatedntnudrillandblastpredictionmodel AT yangkyunkim studyoftheeffectsofgeologicalconditionsonkoreantunnelconstructiontimeusingtheupdatedntnudrillandblastpredictionmodel AT seanseungwonlee studyoftheeffectsofgeologicalconditionsonkoreantunnelconstructiontimeusingtheupdatedntnudrillandblastpredictionmodel
_version_	1718437096528543744

A Study of the Effects of Geological Conditions on Korean Tunnel Construction Time Using the Updated NTNU Drill and Blast Prediction Model

Ejemplares similares