西北水电Issue(5)：22-28,7.DOI:10.3969/j.issn.1006-2610.2025.05.004
高寒区堆石混凝土现场试验仓浇筑试验与监测分析
On-Site Test Silo Pouring Test and Monitoring Analysis of Rock-Filled Concrete in Alpine Regions
摘要
Abstract
The low hydration heat characteristic of rock-filled concrete(RFC)dams meets the construction needs of concrete dams in al-pine regions,but there is still a lack of sufficient on-site monitoring data and analysis for RFC in such regions.Based on this,an on-site test silo experiment was carried out at the Yebatan Hydropower Station to monitor and analyze the pouring compactness and temperature indicators inside the silo.The research results show that:under the conditions of alpine regions and the working condition of secondary pouring after formwork explosion,RFC can achieve good pouring compactness;however,attention should be paid to cleaning the areas where small stones are concentrated,as such locations are more prone to aggregate arching and blockage,leading to insufficient pouring compactness.The peak temperatures at representative measuring points inside the RFC are 24.50℃and 12.81℃respectively,which are significantly lower than the32.18℃(of self-compacting concrete)and38.37℃(of normal concrete anti-scour and wear-resistant layer).At the same position,the peak temperature difference between the interior and exterior of the rock fill is small,which proves that the strong inhomogeneity of the temperature field inside the silo only occurs in the early stage before the temperature reaches its peak.关键词
高寒区/堆石混凝土/现场试验/浇筑密实性/仓内温度Key words
alpine region/rock-filled concrete(RFC)/on-site test/pouring compactness/temperature inside silo分类
水利科学引用本文复制引用
唐茂刚,夏勇,赵恒,杨家琦,张喜喜..高寒区堆石混凝土现场试验仓浇筑试验与监测分析[J].西北水电,2025,(5):22-28,7.基金项目
陕西省混凝土结构安全与耐久性重点实验室开放基金(SZ02402) （SZ02402）
