高速铁路基床表层级配碎石渗透系数试验研究  

Analysis on Influencing Factors of Surface Cleanliness Detection of Railway Gravel Ballast Particles

作　　者：吴千鸿 Wu Qianhong(China Railway 24th Bureau Group Fuzhou Railway Construction Engineering Quality Inspection Co.Ltd.,Fuzhou,Fujian 350014)

机构地区：[1]中铁二十四局集团福州铁建工程质量检测有限公司,福建福州350014

出　　处：《江西建材》2021年第3期27-28,31,共3页Jiangxi Building Materials

摘　　要：铁路路基设计规范及高速铁路路基工程质量验收标准对基床表层级配碎石的渗透系数都提出了具体的指标要求,渗透系数是综合反映基床表层级配碎石渗透能力的一个指标,研究渗透系数与边壁处理层黏土薄泥涂抹厚度、压实系数、水泥掺量之间关系,都具有一定的现实意义,有利于准确测定基床表层级配碎石的渗透系数,有利于更好地指导施工,提升工程质量,节约成本。The design specifications of railway subgrade and the quality acceptance standard of high-speed railway subgrade engineering have put forward specific index requirements for the permeability coefficient of the surface layer of the subgrade. The permeability coefficient is an index that comprehensively reflects the permeability of the surface layer of the subgrade. Research The relationship between the permeability coefficient and the thickness of the clay thin mud of the sidewall treatment layer, the compaction coefficient, and the cement content have certain practical significance, which is conducive to the accurate determination of the permeability coefficient of the graded gravel on the surface of the subgrade, and is beneficial to better Guide construction to improve the quality of the project and save costs.

关 键 词：高速铁路 基床表层 级配碎石 渗透系数 

分 类 号：U216[交通运输工程—道路与铁道工程]