西北水电Issue(5)：29-37,9.DOI:10.3969/j.issn.1006-2610.2025.05.005
严寒地区堆石混凝土坝防渗层一体化浇筑技术研究
Research on Integrated Pouring Technology of Anti-Seepage Layer for Rock-Filled Concrete Dams in Severe Cold Regions
摘要
Abstract
The anti-seepage layer of Roller-Compacted Concrete(RFC)dams is mostly formed by integral pouring of High-Flow Self-Compacting Concrete(SCC)and rockfill.However,the anti-seepage layer on the surface of the dam in frigid regions is susceptible to the influence of ambient temperature.To reveal the evolution laws of the temperature field and stress field of the anti-seepage layer during the pouring and operation periods of RFC dams,a numerical model was established based on a prototype dam of a water conser-vancy project.The pre-processing was carried out using MSC-Patran software,while the solution calculation and post-processing were completed via ABAQUS.Coupled calculations of temperature and stress were conducted on typical dam sections to explore the feasibili-ty of integral pouring of the SCC anti-seepage layer,and to analyze the effects of thermal insulation measures,anti-seepage layer mate-rials,and thickness on the temperature stress of the anti-seepage layer.The results show that:Appropriate thermal insulation measures must be adopted for RFC dams in frigid regions to control the stress failure zone;The integral pouring of the SCC anti-seepage layer with the dam body is feasible;The thickness of the anti-seepage layer has an impact on both the stress of the anti-seepage layer itself and the overall stress of the dam body.The research results can provide a reference for the construction of RFC dams in frigid regions.关键词
堆石混凝土坝/严寒地区/有限元法/防渗层/温度应力Key words
rock-filled concrete dam/severe cold region/finite element method/impervious layer/temperature stress分类
水利科学引用本文复制引用
肖安瑞,陈德辉,徐小蓉,倪一鸣,赵斐..严寒地区堆石混凝土坝防渗层一体化浇筑技术研究[J].西北水电,2025,(5):29-37,9.基金项目
国家自然科学基金项目(52039005) （52039005）
中央高校基本科研业务费专项资金(2025MS070) （2025MS070）
