Page 189 - 《水资源与水工程学报》2023年第3期
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                29.75%,respectively;thatofgeologicalconditionsintheupstream sectionisthehighest,whichis
                28.93%;andthatofhydrologicalconditionsinthedownstream sectionscoresthehighest,whichis
                22.96%.Accordingtothecomprehensivediagnosis,themainobstaclefactorsaffectingtheconstruction
                 safetyofNo.7tunnelareclimatic ,hydrologicalandgeologicalconditions,themeanvalueoftheobstacle
                 degreeis49.55% andtheriskrangedegreeis62.5%,sotheconstructionsafetyrisklevelofthishy
                 draulictunnelisevaluatedas Ⅱ,whichiscategorizedasthemediumrisk.Comparedwiththeprevious
                 research ,thefuzzycomprehensiveevaluationresultsareconsistentwiththeengineeringpractice,there
                 fore ,theproposedmodelisfeasible.Thecombinedmodelofunconfirmedmeasurementtheoryandobsta
                 clefactordiagnosisisapplicabletothehydraulictunnelconstructionsafetyriskevaluationwithhighfeasi
                 bilityandcalculationaccuracy,whichcanprovideanewapproachforthesafetyriskevaluationanddiag
                 nosisofthehydraulictunnelconstructionintheYunnanCentralWaterDiversionProject.
                 Keywords:hydraulictunnels;constructionsafetyriskevaluation;indexsystem;uncertaintymeasure
                 menttheory;obstaclefactordiagnosis;YunnanCentralWaterDiversionProject
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