铁道科学与工程学报2016，Vol.13Issue(3)：469-475,7.
富水砂卵石地层注浆参数优化研究
Study on optimization of grouting parameters in water -soaked sand and cobble stratu m
摘要
Abstract
Choosing reasonable grouting parameter is the key to grouting reinforcement for Water -soaked sand and cobble stratum,which has the characteristics of looseness,large porosity and high permeability.Taking a subway station in Changsha as the project background,in the light of the actual problems of cement -sodium sili-cate slurry grouting including difficultly controlling the setting time and empirically determining grouting hole spacing,the paper has optimized grouting material parameters and hole spacing by indoor grouting material tes-ting,field grouting testing and finite element numerical simulation and proposed the corresponding grouting con-trol standards.It is suggested that water -cement ratio should be 0.8 -1.0,water glass about 40 Baume De-grees,water glass addition 8% -10% and grouting hole spacing about 1.8 m when Water -soaked sand and cobble stratum adopted cement -water class to grout.关键词
富水砂卵石地层/注浆加固/水泥 -水玻璃双液浆/注浆参数优化Key words
Water -soaked sand and cobble stratum/grouting reinforcement/cement -sodium silicate slurry/parameter optimization of grouting分类
交通工程引用本文复制引用
李享松,覃娟,罗概,邓俊..富水砂卵石地层注浆参数优化研究[J].铁道科学与工程学报,2016,13(3):469-475,7.基金项目
湖南省科技计划资助项目（2010GK3173）；中铁五局集团有限公司资助项目 （）
