《河南水利与南水北调》2023年第5期勘测设计某大坝存在问题及处理方案比选翟义亭(河南省宁陵县水利局工程队,河南宁陵476700)摘要:某大坝防渗加固工程设计对现有工程总体布置不作变动,结合现状水库防洪能力不满足规范要求,坝体填筑质量也存问题,黏土心墙填筑质量不满足规范要求等实际情况,通过对坝体、坝基渗透原因进行分析,对劈裂黏土灌浆、深层搅拌桩、浇注塑性混凝土防渗墙3种防渗加固处理方案进行比选,最终决定大坝坝体渗漏处理采用深层水泥土搅拌桩防渗墙。坝顶上游侧增设防浪墙,结合坝体防渗加固处理使防渗体顶部高程满足规范要求。关键词:防渗加固;渗漏;灌浆;方案中图分类号:TV698.23文献标识码:B文章编号:1673-8853(2023)05-0093-02ExistingProblemsofaDamandComparisonoftheSolutionsZHAIYiting(EngineeringTeamofNinglingCountyWaterConservancyBureau,Ningling476700,China)Abstract:Thedesignofadamanti-seepagereinforcementprojectmaintainstheoveralllayoutofthecurrentproject.Combinedwiththefactthattheinsufficientfloodcontrolcapacityofthereservoir,problemsinthedamfillingquality,thefailingqualityoftheclaycorewallfillingandotheractualconditions,threekindsofanti-seepagereinforcementtreatmentschemes,whicharesplittingclaygrouting,deepmixingpileandpouringplasticconcreteanti-seepagewall,arecomparedthroughtheanalysisofthecausesofseepageinthedambodyandfoundation.Finally,itisdecidedthattheseepagetreatmentofdambodyadoptsdeepcementsoilmixingpilecutoffwall.Awavewallisaddedattheupstreamsideofthedamcrest,andthetopelevationoftheimperviouscoremeetsthespecificationrequirementsincombinationwiththeanti-seepagereinforcementtreatmentofthedambody.Keywords:seepagepreventionandreinforcement;leakage;grouting;scheme1工程现状某水库建成于1978年。根据安全评价调洪成果:30年一遇设计水位145.55m,相应库容17.30万m3;300年一遇校核水位145.66m,相应库容17.60万m3;水库起调水位144.20m,相应库容14.10万m3;原设计兴利水位143.40m,兴利库容11.50万m3;死水位135.80m,死库容0.70万m3。主要建筑物有大坝、溢洪道、输水洞等。大坝为黏土心墙坝,坝长83.00m,坝顶宽3.40~4.00m,坝顶高程145.30~145.50m,最大坝高14.80m,心墙顶部高程139.80m。坝顶路面为土路面...