岩体力学英文作业homework.doc

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1、WangLiang-qingassociateprofessorHomework1.Ajointplanehasadipangle=420anddipdirection=1440.Drawthecompletecirclecorrespondingtothestereographicprojectionofthejointplane.Fig.12.Drawthestereographicprojectionofthejointpyramidsresultingfromthefollowingjointp

2、lanes:table.1PlaneDipangle(deg.)Dipdirection(deg.)P1600700P25002600P380000P42001500Fig.23.Findthenormaltotheplaneconstructedinproblem2Fig.3Wecanfindthenormaltotheplaneconstructedinproblem2fromfig.3.Theorientationsofnormaltotheplanearelistedinthefollowing

3、table:table.2NormaltoplaneN1N2N3N4Plunge30°40°10°70°Trend250°80°180°330°4.Findtheslidingdirectionsforsinglefaceslidingontheplanesgiveninproblem2undergravitationalloading.Fig.4aFig.4bFig.4cFig.4dAllthepossibleslidingdirectionsforsinglefaceslidingontheplan

4、esareshowninthefigureabovesuchasFig.4a、Fig.4b、Fig.4c、Fig.4d.5.Findallthepossibleslidingdirectionsfordoubleplaneslidingusingtheplanesgiveninproblem2undergravitationalloading.Fig.5aFig.5bFig.5cFig.5dFig.5eFig.5fAllthepossibleslidingdirectionsfordoubleplane

5、slidingareshowninthefigureabove,suchasFig.5a、Fig.5b、Fig.5c、Fig.5d、Fig.5f.6.Whenslopeplanehasadipangle=550anddipdirection=2700,Evaluateslopestabilityusingtheplanesgiveninproblem2undergravitationalloading(jointfictionangle=30degree,jointcohesion=0).Fig.6aT

6、opplingfailure:table.3P1P2P3P4maximumslopeangleofsafety90°90°90°90°Planefailure:table.4P1P2P3P4maximumslopeangleofsafety90°50°90°90°Wedgeslide:table.5I12I13I14I23I24I34maximumslopeangleofsafety90°90°90°48°90°90°