基于表面沉降法的铁尾矿料路基现场碾压试验分析  

Field Compaction Tests on Iron Tailings Roadbed Based on Surface Settlement Method

作　　者：于建游 YU Jian-you(Yanchong Construction Office of Hebei Expressway Group Limited,Zhangjiakou 075000,China)

机构地区：[1]河北省高速公路延崇筹建处,张家口075000

出　　处：《价值工程》2022年第14期45-47,共3页Value Engineering

基　　金：河北省交通运输厅科技项目,“基于刚度控制的山区高速公路尾矿料路基填筑及快速检测新技术研究”(YC-201929)。

摘　　要：作为一种路基压实质量检测方法,表面沉降法具有操作简便、省时省力的优点。本文基于表面沉降法对铁尾矿料路基施工过程的碾压质量进行检测和分析,并与路基压实度进行相关性分析。研究表明,铁尾矿料路基在碾压五遍后沉降差小于2mm,达到碾压施工质量要求;松铺厚度对铁尾矿料路基碾压沉降差具有显著的影响。铁尾矿料路基沉降差与压实度呈线性负相关,当沉降差为2mm时,路基压实度达95.7%,满足规范要求。As a roadbed compaction quality inspection solution,the surface settlement method has the advantages of simple operation,time-saving and labor-saving.In this paper,the compaction quality of the iron tailings roadbed during construction is tested and analysed based on the surface settlement method.The correlation analysis between the differential settlement and the compaction degree of the roadbed is carried out.Results show that the differential settlement of the iron tailings roadbed is less than 2mm after five times of compaction,and the differential settlement value meets the requirements of roadbed construction quality.The thickness of loose paving roadbed also has a significant effect on the differential settlement.There is a linear negative correlation between the differential settlement and the compaction degree of the iron tailings roadbed.When the differential settlement is 2mm,the corresponding compaction degree reaches 95.7%,indicating that the compaction meets the requirements from the specification.

关 键 词：铁尾矿料路基 表面沉降法 沉降差 压实度 

分 类 号：U415.6[交通运输工程—道路与铁道工程]