溢流面板坝坝体变形抑制施工技术研究  

Research on Construction Technology for Dam BodyDeformation Suppression of Overflow Panel Dam

作　　者：成小东 张丽英 周斌 夏有能 齐恩会 CHENG Xiaodong;ZHANG Liying;ZHOU Bin;XIA Youneng;QI Enhui(Yunnan Construction Investment Second Water Conservancy and Hydropower Co.,LTD.,Kunming 650051,China;Yunnan Runnuo Construction Engineering Quality Inspection Co.,LTD.,Kunming 650051,China;Wenshan Bainiu Water Development Co.,LTD.,Wenshan 650031,China)

机构地区：[1]云南建投第二水利水电有限公司,云南昆明650051 [2]云南润诺建筑工程质量检测有限公司,云南昆明650051 [3]文山州白牛厂水务开发有限公司,云南文山650031

出　　处：《云南水力发电》2023年第12期155-160,共6页Yunnan Water Power

基　　金：云南省教育厅科学研究基金项目(2023J1976、2023J1974)。

摘　　要：目前国内溢流面板坝尚未形成完整的设计与施工方法,对于修建在堆石体上的溢洪道,最不利的影响因素就是相当于软基的堆石具有沉降变形的特点。大量资料表明,碾压堆石的沉降绝大部分是在施工期完成的,蓄水期沉降量占坝高的比例均小于0.13%,蓄水期沉降只占沉降量的12%,只要采取合理的适应基础变形的技术措施,在堆石坝下游坝坡上布置溢洪道是可行的,坝内溢洪道的泄槽坡度一般较陡,且多修建在以松散介质为材料的人工填筑堆石体上,在泄水期经受高速水流的作用,溢洪道上的水流特性很复杂。通过项目实践,总结了为减少堆石体在施工期和运行期变形量对坝基处理和填筑采取的综合施工技术。At present,there is no complete design and construction method for overflow panel dams in China.The most unfavorable influencing factor for spillway built on rockfill is that the rockfill on a soft foundation has the characteristics of settlement and deformation.A large amount of data indicates that the majority of the settlement of compacted rockfill is completed during the construction period.The proportion of settlement during the water storage period to the height of the dam is less than 0.13%,and the settlement during the water storage period only accounts for 12%of the settlement.As long as reasonable technical measures are taken to adapt to foundation deformation,it is feasible to arrange spillway on the downstream slope of the rockfill dam.The slope of the spillway channel inside the dam is generally steep,and it is mostly built on manually filled rockfill bodies made of loose media.It undergoes the action of high-speed water flow during the discharge period,and the water flow characteristics on the spillway are very complex.Through project practice,this paper summarizes the comprehensive construction techniques adopted for dam foundation treatment and filling to reduce the deformation of rockfill during construction and operation periods.

关 键 词：溢流面板坝 坝体变形抑制 施工技术 

分 类 号：TV652.1[水利工程—水利水电工程]