Responsibility of Permeability of Modified Loess Soil on Microstructure
详细信息
- 责任者：Yang Bo (Key Lab. of Mechanics on Western Disaster & Environment ; MOE ; Lanzhou University ; Lanzhou 730000 ; China) ; Zhang Huyuan
- 刊名：Hydrogeology and Engineering Geology
- 出版年：2011
- 卷期：38(6)
- 关键词：黄土类土 ; loessial soil
- 页码：p.96-101
- 图表：8 illus., 6 tables, 19 refs.
- 分类号：1702
- issnNo：ISSN1000-3665
- isbnNo：CN11-2202/P
摘要
A quantitative statistics of the microstructure of loess soil modified by bentonite in various contents were conducted to study the responsibility of the permeability on pore structures. The flexible-wall permeameter test illustrated that hydraulic conductivity (k) of loess soil was lowered by an increasing addition of bentonite, corresponding to an elevated smaller pores. It was found that a linear relationship existed between lgk and the big and intermediate pores which are effective to permeation. A regression model was established governing the hydraulic coefficient and the effective void ratio, which is more reliable than the traditional one.