土工基础

土工基础 ›› 2020, Vol. 34 ›› Issue (5): 629-631.

• 测试技术 • 上一篇    下一篇

容县花岗岩风化土渗透性及其渗透模型研究

韩 雪 1，王志兵 1,2，阴良魁 3，邹永胜 1   

  1. （1.桂林理工大学广西岩土力学与工程重点实验室，广西桂林 541004；2.桂林理工大学土木与建筑工程学院，广西桂林 541004；3.中国科学院科技创新发展中心，北京 100000）
  • 收稿日期:2020-03-10 修回日期:2020-03-14 出版日期:2020-10-20 发布日期:2020-11-02
  • 作者简介:韩 雪（1993-），女，硕士研究生，研究方向为岩土工程及岩土体渗透性和渗透模型。

Permeability and Permeability Modeling of Weathered Granitic Soils in Rongxian County

HAN Xue1, WANG Zhibing1,2, YIN Liangkui3, ZOU Yongsheng1   

  1. (1.Key Laboratory of Geotechnical and Engineering, Guilin University of Technology, Guilin 541004;
    2.College of Civil Engineering and Architecture, Guilin University of Technology, Guilin 541004;
    3.Center for Innovation and Development, Chinese Academic of Sciences, Beijing 100000)
  • Received:2020-03-10 Revised:2020-03-14 Online:2020-10-20 Published:2020-11-02

摘要： 渗透性会对土体工程地质特性与力学行为产生较为重要的影响，渗透系数作为土渗透性强弱的定量指标，不仅综合反映了水在土体孔隙中流动的难易程度，同时也是进行渗透计算时必须用到的一个基本参数，要对渗透系数进行理论估算相当困难。以容县花岗岩风化土为研究对象，取原状土样与压实重塑土样进行渗透试验和压汞试验，通过对容县花岗岩风化土的渗透性进行研究，将已有渗透模型与宏观参数建立联系，将微观模型与压汞试验数据进行结合，提出改进渗透系数估算模型。

关键词: 花岗岩风化土, 渗透试验, 渗透系数, 压汞试验

Abstract: Permeability affects the engineering geological characteristics and mechanical behavior of the soil. The permeability coefficient comprehensively reflects the difficulty of water flowing in the pores of the soil. It is not only a quantitative indicator representing the permeability of the soil, but also a necessary for the calculation of the infiltration. A basic parameter, it is quite difficult to theoretically estimate the permeability coefficient. Granite weathered soil is the rock debris that has been weathered and denuded in the original rock. It is classified into special soil according to the cause and is often used as the building bearing layer and roadbed filler. This paper studies the permeability of granite weathered soil in Rongxian County. The original soil sample and the compacted remolded soil sample were subjected to the permeability test and the mercury intrusion test. The permeability of the granite weathered soil in Rongxian County was studied, and the existing infiltration model was linked with the macroscopic parameters. The microscopic model and the mercury intrusion test were carried out. The data were combined to compare the applicability and reliability of infiltration models for Rongxian granite weathered soil, and an improved permeability coefficient estimation model was proposed.

Key words: Weathered Granitic Soils, Permeability Tests, Coefficient of Permeability, Mercury Pressure Tests

中图分类号: