西安科技大学硕士学位论文太白县地质灾害隐患点危险性评价——以滑坡为例姓名：贾少杰申请学位级别：硕士专业：地质工程指导教师：杨梅忠2011---本文来源于网络，仅供参考，勿照抄，如有侵权请联系删除---Subject：GeologicalHazardsAssessmentinTaibaibytheCaseofLand-slideSpecialty：GeologyEngineringName：JiaShao-Jie(Signature)Instructor：YangMei-Zhong(Signature)ABSTRACTTaibaimoreseriousgeologicaldisasters,thedisasterpointofmanytypesanddist-ributionintothefilmintoazone,quitedifferentscale,impactandcontrolledbyman-yfactors,highfrequency,smallandmedium-sizeddisasterpoints,whicharesignificanttolevelagainstdisasterpointsless;becauseofitscomplexgeologicalconditions,ter-rainconditions,meteorologicalandhydrologicalconditionsandastrongnewtectonicmovementandhumanengineeringactivities,makingtheareaintooneofgeologicaldisasterscounties.Inthispaper,2009"ShaanxiTaibaidetailedinvestigationofgeologicaldisasters,"thetaskofTaibaigeologicaldisasterssuchasadetailedinvestigationandlaboratorytestbasedonthework,summedupthelandslidehazardareaanddevelopmentcharacteristicsofpointdistribution;andtheregionPointlandslideriskassessmentcarriedouttostudythemaincontentsare:(1)Analysisoftheregionallandslidehazardpointtype,size,developmentcharacteristicsandformationconditions;landslidehazardsintheanalysisofsurveydatapoint-sbasedonthestudy,accordingtothecharacteristicsofregionallandslidehazardpoin-tstothescale,stability,thenumberofthreats,threatstoproperty,restrictingthenu-mberoffourriskfactorsAHPconstructthetrainingsampleset.(2)applicationofMATLABtoolbox,callednewff()functionofneuralnetworks,BPalgorithmwithmomentumSCGtrainingalgorithmresultswerecomparedtodeter-minetheSCGalgorithmfortrainingmethods.(3)applicationLibSVMtoolboxtoimplementsupportvectormachinemodel,byt-hepolynomialkernelfunction,radialbasisfunctionRBFandSigmoidkernelfunctionofthesampletrainingresultsanderroranalysistodeterminetheradialbasiskernel---本文来源于网络，仅供参考，勿照抄，如有侵权请联系删除---functionRBFasamodel.Applicationoftwomethodsinthestudyarea81pointlandslidehazardriskinde-x,andtheresultswereanalyzedandcomparedwiththepreviousqualitativeassessmentofriskofhiddenpointwasconsistent,theresultsofthisstudypointtoTaibairisksofgeologicaldisasterspreventionandartificialintelligenceAppliedtogeologicaldisa-stershavehiddenpointriskassessmentguidance.Keywords：GeologicalHazardsHazardevaluationBPneuralnetworkSVMThesis：Applicationresearch---本文来源于网络，仅供参考，勿照抄，如有侵权请联系删除---1绪论11绪论1.1选题背景及研究意义1.1.1选题背景地质灾害,通常指由于地质作用引起的人民生命财产损失的灾害,如崩塌、滑坡、泥石流、地面塌陷、地裂缝、地面沉降等。目前根据地质灾害的成灾特点,将地质灾害分为二类:崩塌、滑坡、泥石流、地面塌陷为突发性地质灾害;地裂缝、地面沉降海水入侵等为缓发性地质灾害。中国是世界上地质灾害最严重的国家之一,灾种类型多、发生频率高、分布地域广、灾害损失大。初步调查显示,全国大约有中型以上灾害点3万多处,小型灾害点多达10万甚至100多万处。有300多个县的上万个村庄、100余家大型工厂、50多座大型矿山、3000余km铁路线受崩塌、滑坡、泥石流的严重危害;全国岩溶塌陷总数近3000处塌陷坑多达3×104多个,塌陷面积达300km2;全国17个省(区、市)出现裂缝,共40余处,1000多余条,16个省(区、市)的46个城市出现了地面沉降问题;全国荒漠化土地面积达262×104余km2,土地沙质荒漠化面积每年以2460km2的速度扩展,水土流失面积超过180×104km2[1]。太白县环境地质条件...