非饱和土土水特征曲线(SWCC)测试与预测

李志清 李涛 胡瑞林 李熊 李壮举

李志清, 李涛, 胡瑞林, 李熊, 李壮举. 2007: 非饱和土土水特征曲线(SWCC)测试与预测. 工程地质学报, 15(5): 700-707.
引用本文: 李志清, 李涛, 胡瑞林, 李熊, 李壮举. 2007: 非饱和土土水特征曲线(SWCC)测试与预测. 工程地质学报, 15(5): 700-707.
LI Zhiqing, LI Tao, HU Ruilin, LI Xiong, LI Zhuangju. 2007: METHODS FOR TESTING AND PREDICTING OF SWCC IN UNSATURATED SOIL MECHANICS. JOURNAL OF ENGINEERING GEOLOGY, 15(5): 700-707.
Citation: LI Zhiqing, LI Tao, HU Ruilin, LI Xiong, LI Zhuangju. 2007: METHODS FOR TESTING AND PREDICTING OF SWCC IN UNSATURATED SOIL MECHANICS. JOURNAL OF ENGINEERING GEOLOGY, 15(5): 700-707.

非饱和土土水特征曲线(SWCC)测试与预测

基金项目: 

973项目(No.2002CB412702);;国家自然科学基金项目(No.50579002)资助.

详细信息
    作者简介:

    李志清,主要从事非饱和特殊土方面的研究.Email:lizhiq-2002@sohu.com

  • 中图分类号: P642.116

METHODS FOR TESTING AND PREDICTING OF SWCC IN UNSATURATED SOIL MECHANICS

  • 摘要: 非饱和土土水特征曲线(SWCC)表示了土中含水量与吸力之间的关系。文章介绍了6种常用方法,各有其适用范围。体积压力板仪可量测最大基质吸力值为1500kPa的干燥曲线和浸湿曲线;超过1500kPa时,可用盐溶液法进行量测;Tem-ple仪可量测基质吸力达100kPa的干燥曲线;滤纸法可用于测量土体的基质吸力与总吸力;Dew-point电位计可用于量测土样总吸力变化,尤其适合渗透吸力的量测;TDR探头适合于量测小于300kPa的基质吸力。用GDS非饱和土三轴仪可以进行SWCC测试,测试范围主要取决于陶土板的进气值。用准确的数学模型对测得的含水量、吸力数据进行拟合,对于预测非饱和土力学性质、渗透系数、抗剪强度及分析边坡稳定性有重要意义。由于准确测试SWCC难度较大,并且测试影响因素较多,所以根据土体孔隙大小分布和颗粒大小分布情况预测SWCC,也是一种较好的方法。
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出版历程
  • 收稿日期:  2006-09-04
  • 修回日期:  2006-10-26
  • 刊出日期:  2007-09-29

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