珠江三角洲软土工程特性的微观机理探索

周晖; 李勇

doi:10.13204/j.gyjz201107019

珠江三角洲软土工程特性的微观机理探索

doi: 10.13204/j.gyjz201107019

周晖¹,
李勇²

1.
1. 广州城建职业学院,广州510925;
2.
2. 广东省有色金属地质勘查局地质勘查研究院,广州510080

详细信息

作者简介:
周晖, 女, 1979年出生, 博士研究生, 讲师. E－mail:zhouhuianhui@126.com

中图分类号: TU411
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- 文章访问数: 102
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- PDF下载量: 92
- 被引次数: 7
出版历程
- 收稿日期: 2011-03-07
- 刊出日期: 2011-07-20

MICROSCOPIC MECHANISM STUDY ON ENGINEERING PROPERTIES OF SOFT SOIL IN PEARL RIVER DELTA

Zhou Hui¹,
Li Yong²

1.
1. Guangzhou City Construction College,Guangzhou 510925,China;
2.
2. Institute of Geological Prospecting of Nonferrous Metals Geological Exploration Bureau of Guangdong Province,Guangzhou 510080,China

摘要

摘要: 通过对珠三角典型软土样固结过程的微观结构观测、压汞分析和矿物成分分析,定量研究不同固结荷载下软土的微孔隙形态、尺度分布、颗粒定向性等微观参数随荷载的变化规律。研究表明,固结压力将显著改变软土的孔隙尺度分布、颗粒的定向性,以致改变土体的压缩性和渗透性。固结前期孔隙尺度较大,颗粒排列较紊乱,压缩系数和渗透系数较大并随固结压力增加而快速减小,固结后期孔隙尺度较小,颗粒定向性明显增加,压缩系数和渗透系数也较小且趋于平缓。
- 珠三角软土 /
- 孔隙尺度分布 /
- 颗粒定向性 /
- 工程性质
Abstract: Using micro-structure observation,instrusive mercury and mineral analyses of consolidation process of typical soft soil samples from the Pearl River Delta,it is quantitatively researched into the changing low of micro-parameters,such as the form of micropores,the pore-scale distribution,the directionality of particles,etc with variation of its consolidation loads.The results show that the pore-scale distribution,the directionality of particles,the compressibility and permeability of the silt soil are significantly changed by the consolidation loads.In the early consolidation,the soil is large pore-scale,disordered particles,large compression coefficient and permeability coefficient,which rapidly decrease with the increase of pressure.However,in the late consolidation,the pore-scale reduces,the directionality of particles increases obviously,compression coefficient and permeability coefficient are also smaller and change slowly.
- soft soil of the PRD /
- pore-scale distribution /
- directionality of particles /
- engineering properties

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参考文献(9)

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