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1英语原文及翻译：EARTHQUAKE-INDUCEDLANDSLIDESTABILITYANALYSISOFTHELASCOLINASLANDSLIDEINELSALVADORH.Y.LUO,W.ZHOU,S.L.HUANG,G.CHENAbstract:TheJanuary13,2001earthquake(M7.6)offthecoastofElSalvadortriggeredwidespreaddamaginglandslidesinmanypartsofthecountry.TheLasColinaslandslide,locatedinBalsamoRidgewestofSanSalvador,causedthegreatestlossoflifeinasinglelocationfromtheearthquake.Thepreearthquakeandpost-earthquakeseismicstabilityanalysisoftheLasColinasslopeisstudiedusingthelimitequilibriumandfiniteelementmethodsinthispaper.Thesafetyfactorofthepre-earthquakeslopewaslikelyover1.50basedonthelowgroundwaterlevel,whichwasnotedbylocalresidentspriortotheJanuary13earthquake.Theslopefailedasthehorizontalearthquakecoefficient,kc,reachedbetween0.18gand0.31gdependingonthefailureanalysismethods(i.e.circleandtrialsurfacemethods)andthelowsoilstrengthassumed.Thesafetyfactorofthepost-earthquakeslopefallsinarangefrom1.851atlowwatersaturationto1.337whenfullysaturated.Ascomparedwiththepre-earthquakeslope,thestabilityisabout8%higherforthepost-earthquakeslope.Keywords:Earthquake,landslide,seismic,stability,limitequilibrium,finiteelement.1、INTRODUCTIONElSalvadorlocatesonthePacificcoastoftheisthmusandborderedbyGuatemalatothewestandHondurastothenorthandtheeast.Thecountryhasexperienced,onaverage,onedestructiveearthquakeeverydecadeduringthelasthundredyears.TheearthquakeofJanuary13,2001thatstruckElSalvadorwasthefirstmajorseismicdisasterofthethirdmillenniumandthefifthdestructiveearthquaketoaffectthissmallCentralAmericarepublicin50years(BommerandBenito,2002).TheJanuary13earthquaketriggeredtheLasColinaslandslideoffthesteepnorthernflankofBalsamoRidge.Thelandslideoriginatedatanelevationofabout1,040mto1,070mandtravelednorthwardabout700mto800mintotheLasColinasneighborhoodofSantaTecla,westofSanSalvador.Theverticaldropfromtheridgetotheneighborhoodisabout160m.Thevolumeofthelandslidematerialisestimatedatabout250,000m3(JibsonandCrone,2001).Accordingtoapriorinvestigation(JibsonandCrone,2001),thelandslidemateriale
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