Application of spectral analysis of surface waves (SASW) method: rock mass characterization

A geotechnical study needs to be carried out to determine the engineering parameters of the rock mass at the project site in executing construction projects such as tunnels, dams, highways and buildings. Design and safety factor of the construction are highly dependent on soil and rock engineering p...

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Main Authors:	Goh .T.L, Abdul Rahim Samsudin, Abdul Ghani Rafek
Format:	Article
Language:	English
Published:	Universiti Kebangsaan Malaysia 2011
Online Access:	http://journalarticle.ukm.my/2475/ http://journalarticle.ukm.my/2475/ http://journalarticle.ukm.my/2475/1/03_Goh_T.L.pdf

id	ukm-2475
recordtype	eprints
spelling	ukm-24752016-12-14T06:31:44Z http://journalarticle.ukm.my/2475/ Application of spectral analysis of surface waves (SASW) method: rock mass characterization Goh .T.L, Abdul Rahim Samsudin, Abdul Ghani Rafek, A geotechnical study needs to be carried out to determine the engineering parameters of the rock mass at the project site in executing construction projects such as tunnels, dams, highways and buildings. Design and safety factor of the construction are highly dependent on soil and rock engineering parameters which are usually determined by in-situ test such as Standard Penetration Test (SPT) and seismic tests. The SPT test which normally involves drilling and laboratory works always incur high operating cost, while seismic tests on the other hand are fast, cheap, non-destructive and an easy to operate method for rock mass characterization. The spectral analysis of surface waves (SASW) method is an in situ and non-destructive measurement that is rapid and cost effective. The aims of this study were to determine Rock Quality Designation (RQD) value, excavation classification analysis as well as site characterization by using the SASW method. WinSASW 3.1.3 was used for inversion processing of the SASW data to produce shear wave velocity (Vs) versus depth profiles. The profiles were then analyzed and correlated with rock mass engineering geological parameters such as RQD and site characterization as well as excavation classification of rock mass. Twenty (20) SASW tests were conducted on the granitic rock mass and four (4) SASW tests were conducted on a cut hill slope of metasedimentary rocks. RQD values were computed based on shear wave velocities and ultrasonic velocities of intact (fresh) rock. The differences between RQD obtained from SASW method and those from discontinuity survey were found to be less than 10%. Excavation classification for granitic rock mass at JKR Quarry was empirically determined using both SASW and ultrasonic velocities as well as RQD value of the rock mass. Site characterization for metasedimentary rocks mass at Bukit Tampoi was determined based on shear wave velocities from SASW method. Universiti Kebangsaan Malaysia 2011-05 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/2475/1/03_Goh_T.L.pdf Goh .T.L, and Abdul Rahim Samsudin, and Abdul Ghani Rafek, (2011) Application of spectral analysis of surface waves (SASW) method: rock mass characterization. Sains Malaysiana, 40 (5). pp. 425-430. ISSN 0126-6039 http://www.ukm.my/jsm/
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Kebangasaan Malaysia
building	UKM Institutional Repository
collection	Online Access
language	English
description	A geotechnical study needs to be carried out to determine the engineering parameters of the rock mass at the project site in executing construction projects such as tunnels, dams, highways and buildings. Design and safety factor of the construction are highly dependent on soil and rock engineering parameters which are usually determined by in-situ test such as Standard Penetration Test (SPT) and seismic tests. The SPT test which normally involves drilling and laboratory works always incur high operating cost, while seismic tests on the other hand are fast, cheap, non-destructive and an easy to operate method for rock mass characterization. The spectral analysis of surface waves (SASW) method is an in situ and non-destructive measurement that is rapid and cost effective. The aims of this study were to determine Rock Quality Designation (RQD) value, excavation classification analysis as well as site characterization by using the SASW method. WinSASW 3.1.3 was used for inversion processing of the SASW data to produce shear wave velocity (Vs) versus depth profiles. The profiles were then analyzed and correlated with rock mass engineering geological parameters such as RQD and site characterization as well as excavation classification of rock mass. Twenty (20) SASW tests were conducted on the granitic rock mass and four (4) SASW tests were conducted on a cut hill slope of metasedimentary rocks. RQD values were computed based on shear wave velocities and ultrasonic velocities of intact (fresh) rock. The differences between RQD obtained from SASW method and those from discontinuity survey were found to be less than 10%. Excavation classification for granitic rock mass at JKR Quarry was empirically determined using both SASW and ultrasonic velocities as well as RQD value of the rock mass. Site characterization for metasedimentary rocks mass at Bukit Tampoi was determined based on shear wave velocities from SASW method.
format	Article
author	Goh .T.L, Abdul Rahim Samsudin, Abdul Ghani Rafek,
spellingShingle	Goh .T.L, Abdul Rahim Samsudin, Abdul Ghani Rafek, Application of spectral analysis of surface waves (SASW) method: rock mass characterization
author_facet	Goh .T.L, Abdul Rahim Samsudin, Abdul Ghani Rafek,
author_sort	Goh .T.L,
title	Application of spectral analysis of surface waves (SASW) method: rock mass characterization
title_short	Application of spectral analysis of surface waves (SASW) method: rock mass characterization
title_full	Application of spectral analysis of surface waves (SASW) method: rock mass characterization
title_fullStr	Application of spectral analysis of surface waves (SASW) method: rock mass characterization
title_full_unstemmed	Application of spectral analysis of surface waves (SASW) method: rock mass characterization
title_sort	application of spectral analysis of surface waves (sasw) method: rock mass characterization
publisher	Universiti Kebangsaan Malaysia
publishDate	2011
url	http://journalarticle.ukm.my/2475/ http://journalarticle.ukm.my/2475/ http://journalarticle.ukm.my/2475/1/03_Goh_T.L.pdf
first_indexed	2023-09-18T19:36:09Z
last_indexed	2023-09-18T19:36:09Z
_version_	1777405284452401152

Application of spectral analysis of surface waves (SASW) method: rock mass characterization

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