长江科学院院报2012，Vol.29Issue(9)：53-58,6.DOI:10.3969/j.issn.1001-5485.2012.09.013
临江Ⅱ号崩滑体土水特征曲线试验研究
Tests for Soil-Water Characteristic Curve of Riverside Slump-mass
摘要
Abstract
Many landslides became unstable after the impoundment of the Three Gorges reservoir, raising awareness of the importance of research on unsaturated soil properties. The authors selected the slip-zone soil and slip-mass soil in riverside No. II slump-mass as test objects to investigate the properties of unsaturated soil at Huangtupo landslide in Badong county. We reshaped the samples according to their natural states, and carried out tests on soil-water characteristics and tests on varying-waterhead permeability. The volumetric water content and permeability coefficient of both the soil samples under different matric suction conditions were obtained. Having fitted the soil-water characteristic test curves, we found that the fitted result by Fredlund-Xing' s equation was superior to that by Gardner' s equation and index attenuation equation. We also found that the characteristic curve could be influenced by the first-level suction during the test. The research result will serve as a guidance for the stability evaluation of reservoir bank during water storage.关键词
非饱和土/土水特征曲线/基质吸力/渗透系数Key words
unsaturated soil/ soil-water characteristic curve/ matric suction/ permeability coefficient分类
建筑与水利引用本文复制引用
常波,吴益平,何高峰,姜淼,孟振..临江Ⅱ号崩滑体土水特征曲线试验研究[J].长江科学院院报,2012,29(9):53-58,6.基金项目
国家重点基础研究发展计划(2011CB710606) （2011CB710606）
教育部长江三峡库区地质灾害研究中心开放基金(TGRC201012) （TGRC201012）
