非洲干旱环境铁路路基填料压实技术

Compaction technology of railway subgrade filling in Africa with dry condition

非洲处于干旱地区,自然环境条件恶劣,蒸发量远大于降水量,气候异常干燥,土源均干燥缺水,压实困难,并且施工用水来源困难。控制填料含水率,确保压实质量,提高作业效率是必须攻克的难题之一。通过蒙内铁路项目第二标段的路基C料施工为例,应用焖料工艺来解决填料含水率问题,保证了路基的压实质量,为今后非洲干旱环境路基施工提供参考。

Africa is in arid region,with extremely bad natural environment condition and abnormal dry climate,its evaporation greater than the precipitation,so the soil is dry and lack of water.In addition,due to the shortage of water sources for subgrade construction,the compaction of subgrade is difficult.How to control the water content of filling materials,ensure the compaction quality and improve work efficiency is one of the problems that must be solved.Based on the subgrade construction of filling material C in section2of Mombasa-Nairobi Standard Gauge Railway,infiltrating technology was applied to solve the problem of water content of filling materials,it has ensured the compaction quality of subgrade,which can provide a reference for subgrade construction in Africa with dry condition.