《河南水利与南水北调》2022年第12期施工技术某水库保护性拆除专项施工方案李德华(商丘市水利工程质量监督站,河南商丘476000)摘要:某水库位于黄河流域沁河水系,建于20世纪60年代。因水库的长期运行,工程存在老化、人为破坏、自然侵蚀等现象,为了水库的继续安全运行,需要对水库存在的问题及隐患在除险加固的基础上进行保护性拆除。经综合分析论证,水库除险加固保护性拆除工程结构拆除时需对坝体进行保护,防止拆除过程中造成损伤,故采用人工与机械切割配合的模式进行拆除。文章根据水库的具体工程情况详细论述了水库保护性拆除的专项施工方案。关键词:水库;除险加固;保护性拆除;施工方案中图分类号:TV551.1文献标识码:B文章编号:1673-8853(2022)12-0040-02SpecialConstructionSchemeforProtectiveDemolitionofaReservoirLIDehua(ShangqiuWaterConservancyEngineeringQualitySupervisionStation,Shangqiu476000,China)Abstract:AreservoirislocatedintheQinRiversystemoftheYellowRiverbasinandwasbuiltinthe1960s.Duetothelong-termoperationofthereservoir,aging,man-madedamage,naturalerosionandotherphenomenaexistintheproject.Inordertocontinuethesafeoperationofthereservoir,itisnecessarytocarryoutprotectiveremovalofwaterinventoryproblemsandhiddendangersonthebasisofriskremovalandreinforcement.Throughcomprehensiveanalysisanddemonstration,thedambodyneedstobeprotectedduringthestructuraldemolitionoftheprotectivedemolitionprojectofreservoirreinforcementtopreventdamageinthedemolitionprocess,sothemodeofmanualandmechanicalcuttingisadoptedfordemolition.Accordingtothespecificprojectsituationofthereservoir,thispaperdiscussesindetailthespecialconstructionschemeoftheprotectivedemolitionofthereservoir.Keywords:reservoir;riskremovalandreinforcement;protectiveremoval;constructionplan1工程概况该水库大坝由溢流坝段和挡水坝段组成,为浆砌石重力溢流坝。大坝高76m,坝长159m,墩厚1.50m,坝顶海拔高程366m,上设6孔10m×9m钢制弧形闸门。交通桥桥梁总长度70m,桥梁宽度5.90m。桥梁跨径布置为11.50m×6m,上部结构采用装配式预应力混凝土T梁。桥梁下部结构采用墩柱式桥墩,基础直接坐在坝体上。2总体拆除施工方案2.1总体拆除顺序水库除险加固工程保护性拆除工程结构拆除顺序...