人民长江2025，Vol.56Issue(6)：169-175,7.DOI:10.16232/j.cnki.1001-4179.2025.06.022
振动碾作用下筑坝堆石料动力响应特性
Dynamic response characteristics of rockfilling materials in dam construction under vibration roller action
摘要
Abstract
Poor compaction quality can lead to the formation of seepage channels and uneven settlement of dams,weakening its stability and long-term durability.Therefore,it is crucial to evaluate the compaction quality of rockfill dams.Based on the Nam Kong-1 Hydropower Station project in Laos,a four-degree-of-freedom dynamic coupling analysis model was established to study the interaction between the vibrating roller and the rockfilling materials.This model,combined with in-situ monitoring tests of the dynamic response of rockfill materials under roller compaction,enabled a dynamic response analysis and compaction quality evaluation through vibration characteristics of the compacted layer.The model analysis results indicate that the vibration peak val-ues of rockfill materials were positively correlated with stiffness.As the number of rolling passes increases,the density of the com-pacted layer rises,leading to a gradual increase in the stiffness of the rockfill materials and a corresponding increase in vibration peak values.Field test results further demonstrated that as the number of rolling passes increase,the vibration peaks in the com-paction area progressively rise.The compaction quality meets the required standards when the number of rolling passes exceeds seven.This study proposes a novel method for evaluating compaction quality based on the dynamic response of rockfill materials,which helps ensure dam compaction quality and facilitates rapid construction.关键词
面板堆石坝/堆石料/压实/振动监测/动力学模型Key words
faced rockfill dam/rockfill material/compacting/vibration monitoring/dynamic model分类
建筑与水利引用本文复制引用
张威,郭骁,余懿凡,陈明..振动碾作用下筑坝堆石料动力响应特性[J].人民长江,2025,56(6):169-175,7.基金项目
国家自然科学基金项目(51979205) （51979205）
