土的粒度成分对土体可注性的影响分析  

Effect of soil particle size on soil groutability

作　　者：孙立光 梁为民[1] 姚小平[1] SUN Liguang;LIANG Weimin;YAO Xiaoping(Henan Polytechnic University,Jiaozuo 454000,China;Zhengzhou Metro Group Co.,Ltd.,Zhengzhou 450000,China)

机构地区：[1]河南理工大学土木工程学院,河南焦作454000 [2]郑州地铁集团有限公司,河南郑州450000

出　　处：《中原工学院学报》2019年第6期34-37,共4页Journal of Zhongyuan University of Technology

基　　金：国家自然科学基金项目(41402216)。

摘　　要：土体中粒度成分对土体的渗透性有着直接影响。在标准砂中加入不同比例的原状土来模拟不同黏粒含量的土体,通过变水头渗透实验测出了试验土样的渗透系数;利用SPSS软件回归出了土的黏粒含量与渗透系数的函数关系,进而简化了土体渗透注浆中浆液扩散半径的确定方法。对Maag公式进行了推演,为渗透注浆中选定注浆材料、确定浆液配比、注浆压力和注浆时间提供了理论依据。The particle size of soil has a direct influence on soil permeability.In this paper,different proportions of undisturbed soil are added into the standard sand to simulate the soil with different clay content.The permeability coefficient of the soil sample was measured by the variable head permeability test.The function relation between clay content and permeability coefficient of soil was obtained by SPSS software.The method to determine the diffusion radius of grout was simplified.Magger formula was deduced,which provided the theoretical basis for selecting grouting materials,determining grout ratio,grouting pressure and grouting time.

关 键 词：注浆 土粒度 渗透 

分 类 号：TU94[建筑科学—建筑技术科学]