1、天津大學(xué)碩士學(xué)位論文海河流域地下水環(huán)境風(fēng)險(xiǎn)分析問題的研究姓名：李紹飛申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：水利水電工程指導(dǎo)教師：馮平20031201ABSTRACTThebodyofgroundwateriscompoundofwaterqualityandwaterquantitywhichaltogetherreflectthecomprehensiveenvironmentsituationofthegroundwaterHoweverduri

2、ngthepastassessmentincivilandabroad，thetwodirectionshavenotbeenconsideredverywellAsakindofresources，groundwateriseffectednotonlybynaturefactors，butimportantlybyhumanactivitiesincludingmanycomplicatedfactorsFurthermorethe

3、assessmentofgroundwaterenvironmentqualityisfullofuncertaintyandimprecisionTherefore，theassessmentofgroundwaterenvironmentqualitycombiningwaterqualityandwaterquantityinvolvesinwaterqualitywaterquantityoverextractlevelandt

4、hegeologicalenvironmentdisasterswhichiscausedbyoverextract，andSOonVirtuallytheassessmentofgroundwaterenvironmentqualityisamultiprincipleandmulti—charactercomprehensiveassessmentInthispaper，theauthorsmnmarizesthecomprehen

5、siveassessmentmethodsusedingroundwaterenvironmentqualitybefore，andproposesanindexsystemofcomprehensiveassessmentinwhichbothwaterqualityandwaterquantityaleconsideredafteranalyzingthecharacteristicsofgroundwaterenvironment

6、sinHaihebasinThetheoriesandapproachesforcalculatingthevaluesoftheindexesandtheirweightsarealsopresentedOnthebasisofthese，thegeneralhierarchicalstructureoftheindexsystemofthecomprehensiveassessmentofgroundwaterenvironment

7、inHaihebasinisputforwardThenbasedonfuzzytheoryfuzzyassessmentmodelisformulatedFinallythemodelisappliedtothecomprehensiveassessmentoffiverepresentativecitiesinHalhebasin—S蝎iazhuangandTangshan(1yinginplainsadjaeenttomounta

8、ins)，CangzhouandHengshui(1yinginmiddleplains)andTianjin(1yingineastcoastalplains)TheresultsofevaluafionisconsistentwiththeactualsituatiOIlSshowedbyconcemedinformationanddata，whichtestifiesthereasonabilityoftheindexsystem

9、andthefuzzyassessmentmodelputforwardinthispaperTIlispapercanofferreferencetocomprehensiveassessmentofgroundwaterenvironmentqualityinotherareaSKeywords：groundwater，environmentqualityindexsystem，comprehensiveassessment，Hai