CAJ | 학술논문

确保混凝土浇筑施工的干场作业条件，是丹江口大坝溢流堰面加高混凝土浇筑项目的关键环节。通过方案比较，选择空腔混凝土叠梁浇筑水下混凝土和钢叠梁闸门相结合的方案进行水下封堵施工。现场施工过程中克服现有工程技术条件，相继解决了混凝土叠梁安装定位、浇筑前止浆、水下混凝土浇筑、水下新增钢叠梁闸门底坎及后期渗漏处理等问题，并首次在水下进行闸门底坎埋件安装、调平，同时采用新型水下不分散、自流平的聚合物树脂混凝土作为底坎埋件的二期混凝土，形成完整的闸门底坎止水结构。
학보혼응토요축시공적간장작업조건，시단강구대패일류언면가고혼응토요축항목적관건배절。통과방안비교，선택공강혼응토첩량요축수하혼응토화강첩량갑문상결합적방안진행수하봉도시공。현장시공과정중극복현유공정기술조건，상계해결료혼응토첩량안장정위、요축전지장、수하혼응토요축、수하신증강첩량갑문저감급후기삼루처리등문제，병수차재수하진행갑문저감매건안장、조평，동시채용신형수하불분산、자류평적취합물수지혼응토작위저감매건적이기혼응토，형성완정적갑문저감지수결구。
Dry land is a critical working condition for concrete pouring of the overflowdam heightening projectof the Danjiangk-ou dam. Differentschemes were com pared and the combination method of cavity concrete stop logs with underwater concrete pouring and steelstop log gates was selected. During the construction, several problems were solved such as the instal ation po-sitioning of concrete stop logs, grouting stopping before pouring, underwater concrete pouring, added underwater sils of steelstop log gates, and later leakage treatment. Moreover, the gate sils were instal ed and leveled under water for the firsttime and the newtype of anti-washoutand self-compacted polymer resin concrete was used as the secondary concrete for sill embedded parts to form a complete sillsealing structure.