泄洪排沙洞镜面混凝土衬砌施工技术  

Construction Technology of Mirror Concrete Lining for Flood Discharge and Sand Discharge Tunnels

作　　者：孟健 MENG Jian(China Railway 14th Bureau Group 2nd Engineering CO.LTD.,Luoyang 471000,China)

机构地区：[1]中铁十四局集团第二工程有限公司,河南洛阳471000

出　　处：《河南水利与南水北调》2024年第5期36-37,92,共3页Henan Water Resources & South-to-North Water Diversion

摘　　要：洛宁电站泄洪排沙洞是抽水蓄能电站工程的重要组成部分,主要作用于下水库洪峰期时的泄洪排沙导流工作。泄洪导流时水流会对底板及过流面边墙产生极大冲刷力,因此,对泄洪排沙洞整体衬砌结构外观质量及形体要求较高。项目通过模板选型,施工配合比优化,振捣工艺控制等措施,形成一套标准镜面混凝土衬砌施工工艺,实现了混凝土体型精准、平整光滑、无缺陷建造,达到“镜面混凝土”效果,为其他类似工程提供很好的借鉴作用。The flood discharge and sand discharge tunnel of Luoning Hydropower Station is an important part of pumped storage power station project,which is mainly used for flood discharge and sand discharge diversion of lower reservoir during flood peak period.In the course of flood discharge and diversion,the water will produce great scouring force on the bottom plate and the side wall of the flow surface,so the appearance quality and shape of the whole lining structure of the flood discharge and sand drainage tunnel are required to be higher.Through template selection,construction mix optimization,vibration process control and other measures,the project has formed a set of standard mirror concrete lining construction technology,which realizes the accurate,smooth and defect-free construction of concrete,and achieves the effect of"mirror concrete",which provides a good reference for other similar projects.

关 键 词：洛宁电站 泄洪排沙洞 衬砌 镜面混凝土 

分 类 号：TU528[建筑科学—建筑技术科学]