Volcanic Rocks-Proceedings of ISRM Workshop W2, Ponta Delgada, Azores, Portugal, 14-15 July, 2007

192 Pages·2007·81.714 MB·\192

by  Ana Maria Malheiro (Editor), Joao Carlos Nunes (Editor)

VOLCANICROCKS
© 2007 Taylor & Francis Group, London, UK
BALKEMA–ProceedingsandMonographs
inEngineering,WaterandEarthSciences
© 2007 Taylor & Francis Group, London, UK
PROCEEDINGSOFTHEINTERNATIONALWORKSHOPONVOLCANICROCKS,
WORKSHOPW2–11th CONGRESSISRM,PONTADELGADA,AZORES,PORTUGAL,
14–15JULY2007
Volcanic Rocks
Editors
Ana Maria Malheiro
LREC–RegionalLaboratoryofCivilEngineering,PontaDelgada,Azores,Portugal
João Carlos Nunes
DepartmentofGeosciences,UniversityofAzores,PontaDelgada,Azores,Portugal
LONDON / LEIDEN / NEW YORK / PHILADELPHIA / SINGAPORE
© 2007 Taylor & Francis Group, London, UK
TheOrganizingCommitteeoftheInternationalWorkshoponVolcanicRocksisespeciallygratefulto:
SecretariaRegionaldeHabitaçãoeEquipamentos
SociedadePortuguesadeGeotecnia
LaboratórioRegionaldeEngenhariaCivil
UniversidadedosAçores
FundaçãoLusoAmericanaparaoDesenvolvimento
Somague–Ediçor–Engenharia
Thepublicationoftheproceedingshasbeenpartiallyfundedby
FundaçãoparaaCiênciaeaTecnologia
CoverPhoto:http://hvo.wr.usgs.gov/kilauea/update/archive/2000/Oct/27–28/
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ISBN:978-0-415-45140-6(Pbk)
© 2007 Taylor & Francis Group, London, UK
Table of contents
Preface IX
Organization XI
KeynoteLectures
Contemporaryviewsofslopeinstabilityonactivevolcanoes 3
D.Elsworth,B.Voight&J.Taron
GeologicalhazardsattheAzoresregion 11
J.L.Gaspar,G.Queirós&T.Ferreira
1 Characterizationofvolcanicformations
GeomechanicalcharacterizationofvolcanicmaterialsinTenerife 21
L.I.G.Vallejo,T.Hijazo,M.Ferrer&J.Seisdedos
GeotechnicalfeaturesoftheweldedignimbritesoftheCanaryIslands 29
J.A.Rodríguez-Losada,L.E.Hernández-Gutiérrez&A.L.Mora-Figueroa
Strengthanddeformabilityoflowdensitypyroclasts 35
A.Serrano,C.Olalla,A.Perucho&L.E.Hernández-Gutiérrez
TheJameosdelAguacave(Lanzarote,CanaryIslands):Somemorphologicalandgeological
featuresofaspectacularlavatubeadaptedtoauditorium 45
S.Signorelli,F.L.J.Carmona,M.L.P.Cabrera,S.Zafrilla&A.C.Carrillo
ThevolcanicrocksoftheCanaryIslands.Geotechnicalproperties 53
J.A.Rodríguez-Losada,L.E.Hernández-Gutiérrez,C.Olalla,A.Perucho,A.Serrano&
R.delPotro
VolcanostratigraphicprofilesfortheAzoresregion:AcontributionfortheEC8Regulationsandthe
characterizationofvolcanicrocksgeomechanicalbehaviour 59
A.M.Malheiro&J.C.Nunes
2 Casestudies
EffectsofflowstructureinlavasfromSierradeGuadalupe,NorthernMexicoCity,onpointloadindex
androckmassqualityevaluation 67
A.Concha-Dimas&J.A.Vargas-Godínez
InnovativeundergroundworksatSocorridos,MadeiraIsland,Portugal 73
P.Cafofo&L.R.Sousa
V
© 2007 Taylor & Francis Group, London, UK
ThestabilitystateoftheJameosdelAgualavatubecaveovertheauditoriumbyaccurate
geomechanicalsiteinvestigations 81
F.L.J.Carmona,S.Signorelli,M.L.P.Cabrera,S.Zafrilla&A.C.Carrillo
3 Constructionmaterials
GEOAVALIAProject:AcontributiontotheAzoreanmineralresourcesprospecting
andevaluation 93
S.D.Caetano,E.A.Lima,S.Medeiros,J.C.Nunes,T.Braga&D.Oliveira
4 Earthquakeengineeringandrockdynamics
EffectsofvolcanicseismiceventsontheStrombolistabilitybyfinitedifference
numericalmodeling 101
T.Apuani,A.Merri&M.Masetti
5 Foundations
Foundationofthe“LosTilos”archbridgeinLaPalmaIsland 113
D.Simic
Foundationsongroundswithcaverns 123
A.Serrano,A.Perucho&J.Estaire
Shallowfoundationsoncollapsiblerocks 129
A.Serrano,C.Olalla&A.Perucho
6 Slopestability
Collapseofweldedtuffcausedbygroundwaterflow 137
T.Suzuki
Debrisslopestabilityanalysisinanactivevolcanoarea 141
T.Apuani,M.Masetti&A.Uttini
PreliminaryanalysisofinstabilityphenomenaatVulcanoIsland,Italy 147
P.Tommasi,A.Graziani,T.Rotonda&C.Bevivino
RockfailuresinvolcanicrockareainHokkaido 155
Y.Ito,K.Agui,Y.Kusakabe&T.Sakamoto
Slopestabilityonvolcanicrocks–thecasestudyofthecutslopesoftheFunchalAirport 161
F.T.Jeremias&J.Muralha
StabilizationoflandslidesintheLisbonVolcanicComplex 169
A.Pinto,D.Cardoso&H.Lopes
Strengthofvolcanicrockmassesinedificeinstability:InsightsfromTeide,Tenerife 175
R.delPotro&M.Hürlimann
Volcanicmega-landslidesinTenerife(CanaryIslands,Spain) 185
M.Ferrer,J.Seisdedos,J.C.García,L.I.GonzálezdeVallejo,J.J.Coello,R.Casillas,
C.Martín&J.M.Navarro
VI
© 2007 Taylor & Francis Group, London, UK
7 Tunnelling
Numericalsimulationoftunnelconstructioninvolcanicrocks 195
G.Beer&Ch.Duenser
Road tunnels at Madeira Island, Por tugal 201
F.Moura&L.R.Sousa
VII
© 2007 Taylor & Francis Group, London, UK
Preface
Thisworkshopcomplementstherecentcongress(9–13July2007)oftheInternationalSocietyonRockMechanics
(ISRM)inLisbon,becauseoftheincreasingrelevanceinabetterunderstandingofthebehaviorofvolcanicrocks
inengineeringprojects.Moreoveritbecameobviousthat,becauseofitsvolcanicoriginandsetting,theAzores
Islandswouldbethenaturalplacetoconvenesuchaworkshop,onasubjectthatpervadeseverydaylifeand
thusassumesaclearimportancefortheseislands,theirinhabitants,itseconomyanddevelopment.
Inatimewhenscientificmeetingsonsimilarsubjectsarecommon,itishighlygratifyingtoacknowledgethe
interestandenthusiasmthatthisworkshophasraised.Boththeworkshopthemeandthegeographicalsetting
ofthearchipelagohave,forsure,stimulatedthepresentationof34abstracts,fromwhich24papershavebeen
preparedforinclusioninthisproceedingsvolume.
Itwaspurposeofthisworkshoptoassemblerenownedandactiveresearchersinavenuewherethepartici-
pantscouldexchangescientificviewsandshareperspectivesrelatingtherelevantsubjects.Thus,theworkshop
providedanexcellentopportunitytoholdhigh-leveldiscussionsandtodefinenovelapproachesandsolutions
foraddressingengineeringproblemsrelatedwithvolcanicrocks.
Scientifictopicsweregroupedinseventhemesofspecializedinterest:
1. CharacterizationofVolcanicFormations
2. CaseStudies
3. ConstructionMaterials
4. EarthquakeEngineeringandRockDynamics
5. Foundations
6. SlopeStability
7. Tunneling
Moreover,becauseofheightenedgovernmentalandpublicawareness,theprotectionofenvironmentalqual-
ityassumesincreasingpriorityinengineeringprojects.Withinthiscontext,theRegionalLaboratoryofCivil
Engineering(LREC),representingtheAzoreanGovernmentDepartmentforHousingandCollectiveFacilities
(SRHE),isproudtoorganizeandpromote,incollaborationwiththePortugueseGeotechnicalSociety(SPG),
andtheAzoresUniversity,thisInternationalWorkshoponVolcanicRocks.
The Editors wish to thank all the participants and contributors for their enthusiastic involvement in this
workshop,thesponsorswhoprovidedthenecessaryfinancialsupport,andeveryonewhomadeitpossibleto
achieveourgoals.
TheEditors
AnaMariaMalheiro
JoãoCarlosNunes
IX
© 2007 Taylor & Francis Group, London, UK
Organization
The workshop is organized by LREC (Regional Laboratory of Civil Engineering) in conjunction with SPG
(PortugueseGeotechnicalSociety)andAzoresUniversity
OrganizingCommittee
AnaMariaMalheiro,Portugal(President)
IsabelDias,Portugal
JoãoCarlosNunes,Portugal
MariadeJesusGonçalves,Portugal
RobertoDutra,Portugal
RuiSantos,Portugal
ScientificCommittee
AlcibíadesSerrano,Spain
ÁureaPerucho,Spain
CláudioOlalla,Spain
FernandoVieira,Portugal
JoãoCarlosNunes,Portugal
LuisRibeiroeSousa,Portugal
LuizHernandez,Spain
LuizVallejo,Spain
TetsuyaSuzuki,Japan
VladimirNikolayevichZhukov,Russia
ZildaFrança,Portugal
XI
© 2007 Taylor & Francis Group, London, UK
Keynote Lectures
© 2007 Taylor & Francis Group, London, UK