在未完建的芹山面板坝上过洪的研究与实践  

Study & Practice of Flood Discharge through Unfinished Qingshan Concrete Face Dam

作　　者：杨首龙[1] 

机构地区：[1]福建省水利水电勘测设计研究院,福建福州350001

出　　处：《水电站设计》2004年第3期17-22,共6页Design of Hydroelectric Power Station

摘　　要：阐述了芹山面板堆石坝施工期渡汛的相关水力学问题及室内试验研究成果。分析了不同坝高渡汛时水力难度的差异,倒坡与顺坡渡汛方案的利与弊,以及对散粒体、块体及钢筋石笼等模拟技术,为面板堆石坝渡汛设计提供科学依据。研究表明,渡汛时堆石体坝高、堆石体与上下游围堰的相互关系、渡汛时堆石体的体型以及渡汛防护措施等,是影响渡汛安全的重要因素。对于渡汛坝高仅二十几米,但水头差较大(如20m),其水力学问题应引起足够重视,否则可能导致渡汛防护措施失效甚至垮坝。This paper presents the relevant hydraulics problems of Qingshan concrete face rockfill dam in flood season during its construction period & the laboratory findings,analyses the different difficulties with differen dam height to pass flood season & advantages and disadvantages of inverse slope & consequent slope flood discharge schemes.By use of loose material,block & steel gabion simulation technology,scientific basis has been laid for the design of the concrete face rockfill dam to pass flood season.The study indicates that height of the rockfill body,relationships of the rockfill body with the upstream & downstream cofferdams,the configuration of the rockfill body during the flood period and the protection measures are major factors affecting safe passing flood season.The paper points out that for the dam only a bit higher than 20m to pass flood second with rather large drop (such as 20m),sufficient attention should be paid to the hydraulics problems,otherwise the protection measures may lose effectiveness and even the dam may collapse.

关 键 词：渡汛 坝高 面板坝 堆石体 面板堆石坝 水力学 垮坝 计提 利与弊 重要因素 

分 类 号：TV641.4[水利工程—水利水电工程]