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Article: Prediction of grout penetration in fractured rocks by numerical simulation

TitlePrediction of grout penetration in fractured rocks by numerical simulation
Authors
KeywordsFractured rock mass
Grout flow
Grout penetration
Stochastic fractures
Issue Date2002
PublisherNRC Research Press. The Journal's web site is located at http://pubs.nrc-cnrc.gc.ca/cgi-bin/rp/rp2_desc_e?cgj
Citation
Canadian Geotechnical Journal, 2002, v. 39 n. 6, p. 1384-1394 How to Cite?
AbstractAs fractures in rock significantly reduce the strength as well as the stiffness of the rock mass, grouting may be required to improve the performance of the rock mass in engineering or mining projects. During grouting, mortar of cement or other materials is injected into the rock mass so that the fractures can be filled up and the rock mass can act as an integral unit. Unlike water, grouts are usually viscous and behave as non-Newtonian fluids. Therefore, the equations describing the flow of grout are more complicated and the solutions are quite difficult to obtain. The problem is further aggravated by the fact that the fractures are mostly randomly distributed, and it is rarely possible to accurately define the fractures and the distribution patterns. In this paper, a numerical model is proposed for analyzing the grouting process. The model is based on the stochastic approach, and it can provide the depth of penetration and the fluid pressure due to the flow of grout, which is modeled as a Bingham fluid, in the fractured rock mass. Parametric studies have been carried out to investigate the effects of various factors on the depth of penetration, and a regression formula is developed for calculating the penetration depth. Experiments have been carried out and their results are used to validate the present method.
Persistent Identifierhttp://hdl.handle.net/10722/42368
ISSN
2015 Impact Factor: 1.877
2015 SCImago Journal Rankings: 2.093
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorYang, MJen_HK
dc.contributor.authorYue, ZQen_HK
dc.contributor.authorLee, PKKen_HK
dc.contributor.authorSu, Ben_HK
dc.contributor.authorTham, LGen_HK
dc.date.accessioned2007-01-29T08:47:56Z-
dc.date.available2007-01-29T08:47:56Z-
dc.date.issued2002en_HK
dc.identifier.citationCanadian Geotechnical Journal, 2002, v. 39 n. 6, p. 1384-1394en_HK
dc.identifier.issn0008-3674en_HK
dc.identifier.urihttp://hdl.handle.net/10722/42368-
dc.description.abstractAs fractures in rock significantly reduce the strength as well as the stiffness of the rock mass, grouting may be required to improve the performance of the rock mass in engineering or mining projects. During grouting, mortar of cement or other materials is injected into the rock mass so that the fractures can be filled up and the rock mass can act as an integral unit. Unlike water, grouts are usually viscous and behave as non-Newtonian fluids. Therefore, the equations describing the flow of grout are more complicated and the solutions are quite difficult to obtain. The problem is further aggravated by the fact that the fractures are mostly randomly distributed, and it is rarely possible to accurately define the fractures and the distribution patterns. In this paper, a numerical model is proposed for analyzing the grouting process. The model is based on the stochastic approach, and it can provide the depth of penetration and the fluid pressure due to the flow of grout, which is modeled as a Bingham fluid, in the fractured rock mass. Parametric studies have been carried out to investigate the effects of various factors on the depth of penetration, and a regression formula is developed for calculating the penetration depth. Experiments have been carried out and their results are used to validate the present method.en_HK
dc.format.extent1962176 bytes-
dc.format.extent26112 bytes-
dc.format.mimetypeapplication/pdf-
dc.format.mimetypeapplication/msword-
dc.languageengen_HK
dc.publisherNRC Research Press. The Journal's web site is located at http://pubs.nrc-cnrc.gc.ca/cgi-bin/rp/rp2_desc_e?cgjen_HK
dc.relation.ispartofCanadian Geotechnical Journalen_HK
dc.rightsCanadian Geotechnical Journal. Copyright © N R C Research Press.en_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subjectFractured rock massen_HK
dc.subjectGrout flowen_HK
dc.subjectGrout penetrationen_HK
dc.subjectStochastic fracturesen_HK
dc.titlePrediction of grout penetration in fractured rocks by numerical simulationen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0008-3674&volume=39&issue=6&spage=1384&epage=1394&date=2002&atitle=Prediction+of+grout+penetration+in+fractured+rocks+by+numerical+simulationen_HK
dc.identifier.emailYue, ZQ:yueqzq@hkucc.hku.hken_HK
dc.identifier.emailLee, PKK:hreclkk@hkucc.hku.hken_HK
dc.identifier.emailTham, LG:hrectlg@hkucc.hku.hken_HK
dc.identifier.authorityYue, ZQ=rp00209en_HK
dc.identifier.authorityLee, PKK=rp00141en_HK
dc.identifier.authorityTham, LG=rp00176en_HK
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.doi10.1139/t02-063en_HK
dc.identifier.scopuseid_2-s2.0-0037003683en_HK
dc.identifier.hkuros76043-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0037003683&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume39en_HK
dc.identifier.issue6en_HK
dc.identifier.spage1384en_HK
dc.identifier.epage1394en_HK
dc.identifier.isiWOS:000179439800012-
dc.publisher.placeCanadaen_HK
dc.identifier.scopusauthoridYang, MJ=9844092700en_HK
dc.identifier.scopusauthoridYue, ZQ=7102782735en_HK
dc.identifier.scopusauthoridLee, PKK=24522826500en_HK
dc.identifier.scopusauthoridSu, B=7201567229en_HK
dc.identifier.scopusauthoridTham, LG=7006213628en_HK

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