三峡水库运行过程中重庆境内水库诱发地震研究

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1、重庆交通大学硕士学位论文三峡水库运行过程中重庆境内水库诱发地震研究姓名：赵鹏申请学位级别：硕士专业：水工结构工程指导教师：唐红梅;陈洪凯20090401ABSTRACTReservoirinducedseismicityisinducedbythereservoir,evensomeplacesexpedencefewornoearthquakesbefore．T11isphenomenonwidelyoccursinmanyplacesoftheworld，thereisobviousdifferenceonthe

2、seismicactivitylevelbetweenreservoirinducedseismicityandlocalearthquakesthatbeforestoringwater,andreservoirinducedseismicityhasitsowncharacteristicscomparedwithtectonicearthquakes．Atacertainperiodoftime，especiallyintheinitialimpoundmentperiod，thereisagoodrelati

3、onshipbetweenseismicactivitiesandwaterlevels．WiththecompletionandimpoundmentoftheThreeGorgesReservoir，therewouldbeenormouswaterbodyanddramaticchangesinwaterlevel．Thischangewouldbreakthebalanceoftheinherenttectonicstressfield，leadtonewfaultsactiveorrevivetheoldo

4、nesandsomegeologicaldisasters，suchasseismicityandnewenvironmentalproblems．SothestudyofreservoirinducedseismicityoftheThreeGorgesReservoirinChongqinghasimportantsignificance，notonlysocial，buttheoretical．Inthisstudy，choosetheThreeGorgesReservoirRegionofChongqinga

5、stheresearchobject，tostudythemechanismsofreservoirinducedseismicity．．nleresultsofthemaincontentsareasfollows：(1)Throughsummarizingtheresearchpaper，learnthehistoryandthestatusquoonreservoirinducedseismicity，basedonthevaluabletheoriesandmethods，outlinetheclassifi

6、cationsandcharacteristicsofthereservoirinducedseismicity．Onengineeringgeology，thegeologicalstructureandgeomorphologicalinformationofChongqingreservoirregionanditssurroundingregionarecollectedandsorted，makesurethegeologicalstructureandthepotentialseismogenicfaul

7、tgeometry．(2)Ontheseismology，analysethecharacteristicsoftheseismicity，aswellastherelationshipswiththewaterlevelbeforeandaftertheimpoundmentoftheThreeGorgesReservoir，andstudythespatialandtemporaldistributioncharacteristicsandtheoccur—encemechanismofreservoirindu

8、cedseismicity，nomatterinlargescaleorsmall．(3)Dividetheloadofthereservoirinducedseismicityintostressload(stressofstaticwaterbody，seepagepressureandtectonicstress，etc)andnon—s