高级搜索
  • 全国中文核心期刊
  • 中国科技核心期刊
  • 美国工程索引（EI）收录期刊
  • Scopus数据库收录期刊

全风化泥岩持水特性研究及其预测

牛庚, 孙德安, 韦昌富, 颜荣涛, 何锦堂, 于明波

牛庚, 孙德安, 韦昌富, 颜荣涛, 何锦堂, 于明波. 全风化泥岩持水特性研究及其预测[J]. 岩土工程学报, 2016, 38(z2): 216-221. DOI: 10.11779/CJGE2016S2035
引用本文: 牛庚, 孙德安, 韦昌富, 颜荣涛, 何锦堂, 于明波. 全风化泥岩持水特性研究及其预测[J]. 岩土工程学报, 2016, 38(z2): 216-221. DOI: 10.11779/CJGE2016S2035
shu
NIU Geng, SUN De-an, WEI Chang-fu, YAN Rong-tao, HE Jin-tang, YU Ming-bo. Water retention behaviour of complete-intense weathering mudstone and its prediction[J]. Chinese Journal of Geotechnical Engineering, 2016, 38(z2): 216-221. DOI: 10.11779/CJGE2016S2035
Citation: NIU Geng, SUN De-an, WEI Chang-fu, YAN Rong-tao, HE Jin-tang, YU Ming-bo. Water retention behaviour of complete-intense weathering mudstone and its prediction[J]. Chinese Journal of Geotechnical Engineering, 2016, 38(z2): 216-221. DOI: 10.11779/CJGE2016S2035
shu

全风化泥岩持水特性研究及其预测  English Version

  • 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. 上海大学土木工程系,上海 200444

基金项目: 国家自然科学基金项目（11372078,51309055）; 广西自然科学基金创新研究团队项目（2012GXNSFGA060001）; 广西岩土力学与工程重点实验室开放基金项目（13-KF-03）
详细信息
    作者简介:

    牛 庚(1991- ),男,硕士研究生,主要从事非饱和土力学的研究。E-mail: 799728496@qq.com。

Water retention behaviour of complete-intense weathering mudstone and its prediction

  • 1. Guangxi Key Laboratory of Geomechanics and Geotechnical Engineering, Guilin University of Technology, Guilin 541004, China;
    2. Department of Civil Engineering, Shanghai University, Shanghai 200072, China

摘要

    摘要
  • 摘要: 以全风化泥岩为研究对象,采用压力板法、滤纸法和饱和盐溶液蒸气平衡法3种方法研究在全吸力范围内压实样的脱湿阶段持水特性;压汞试验测试土样的孔径分布,来解释宏观持水现象,并用此分布曲线推算持水曲线;利用瞬态吸湿脱湿系统（TRIM）快速测量土水特征曲线;以Brooks & Corey、Van Genuchte和Fredlund & Xing模型为基础进行预测,比较了拟合结果。试验结果表明：全风化泥岩压实样的进气值约为75 kPa;与经典的持水曲线不同,过度段不是一条直线,中间出现了水平台阶状。基于瞬态理论的TRIM测试方法可以较好地对持水性进行预测。此外,饱和样为单峰孔隙结构,经受过吸力38 MPa的土样为双峰孔隙结构;饱和样孔隙的孔径主要集中在102~103 nm左右,随着吸力的增加,这个孔径范围的孔隙量减少最大。Van Genuchte和Fredlund & Xing模型拟合曲线能很好地与试验数据吻合;其它预测持水曲线在很干和近饱和的状态与试验数据有一定的偏差。
    Abstract: The pressure plate method, filter paper method, vapor equilibrium technique with saturated salt solution, transient water release and imbibition method and mercury intrusion porosimetry (MIP) tests are used to investigate the water retention behaviour and pore-size distribution of compacted complete-intense weathering mudstone specimens taken from Cenxi, Guangxi Province. Based on the results of the MIP tests experiencing two different suctions, a method for predicting the water retention curve is proposed. The test results show that the air entry value of complete-intense weathering mudstone is about 75 kPa, and the water retention curve in the full suction range can be measured by the three methods. There appears a plateau stage in SWCC. The SWCC calculated by TRIM matches the results of conventional tests. The saturated specimen exhibits a unimodal pore-size distribution, and the specimen experiencing suction of 38 MPa has a double-porosity microstructure. There are mainly intergranular pores with diameter of 102 nm to 103 nm in compacted samples of complete-intense weathering mudstone. With the increase of the suction, the pores in this diameter range decrease. The SWCCs fitted by Van Genuchte and Fredlund & Xing are more close to the measured results accurately, and those fitted by other models cannot match the measured water retention curve correctly in the full suction range.
    • HTML全文
    • 参考文献(18)
  • [1] GB 5007—2011建筑地基基础设计规范[S]. 2011. (GB 5007—2011 Code for design of building foundation[S]. 2011. (in Chinese))
    [2] 纪文奇, 费涵昌. 泥岩风化物的工程特性与应用[J].工程勘察, 1999, 7(2): 8-10. (JI Wen-qi, FEI Han-chang. Engineering characteristics and application of mudstone weathering[J]. Engineering Investigation, 1999, 7(2): 8-10. (in Chinese))
    [3] 胡 冉, 陈益峰, 周创兵. 基于孔隙分布的变形土土水特征曲线模型[J]. 岩土工程学报, 2013, 35(8): 1451-1462. (HU Ran, CHEN Yi-feng, ZHOU Chuang-bing. A water retention curve model for deformable soils based on pore size[J]. Chinese Journal of Geotechnical Engineering, 2013, 35(8): 1451-1462. (in Chinese))
    [4] VANAPALLI S K, FREDLUND D, PUFAHL D E. The influence of soil structure and stress history on the soil-water characteristics of a compacted till[J]. Géotechnique, 1999, 49(2): 143-59.
    [5] 陈正汉. 非饱和土与特殊土力学的基本理论研究[J].岩土工程学报, 2014, 36(2): 201-272. (CHEN Zheng-han. On basic theories of unsaturated soils and special soils[J]. Chinese Journal of Geotechnical Engineering, 2014, 36(2): 201-272. (in Chinese))
    [6] WAYLLACE A, LU Ning. ATransient water release and imbibitions method for rapidly measuring wetting and drying soil water retention and hydraulic conductivity functions[J]. Geotechnical Testing Journal, 2012, 35(1): 1-15.
    [7] VOGEL T, VAN GENUCHTEN M TH, CISLEROVA M. Effect of the shape of the soil hydraulic functions near saturation on variably-saturated flow predictions[J]. Advances in Water Resources, 2001, 24: 133-144.
    [8] LEIJ F J, RUSSELL W B, LESCH S M. Closed-form expressions for water retention and conductivity data[J]. Ground Water, 1997, 35(5): 848-858.
    [9] 孙德安, 高 游. 不同制样方法非饱和土的持水特性研究[J]. 岩土工程学报, 2015, 37(1): 91-97. (SUN De-an, GAO You. Water retention behaviour of soils with different preparations[J]. Chinese Journal of Geotechnical Engineering, 2015, 37(1): 91-97. (in Chinese))
    [10] 孙德安, 高 游, 刘文捷, 等. 红黏土的土水特性及其孔隙分布[J]. 岩土工程学报, 2015, 37(2): 351-355. (SUN De-an, GAO You, LIU Wen-jie, et al. Soil-water characteristics and pore-size distribution of lateritic clay[J]. Chinese Journal of Geotechnical Engineering, 2015, 37(2): 351-355. (in Chinese))
    [11] ROMERO E, VAUNAT J. Retention curve of deformable clays[C]// Proceedings International Workshop on Unsaturated Soils. Rotterdam: A A Balkema, 2000: 91-106.
    [12] ASTM Committee D 5298-03. Standard test method for measurement of soil potential (suction) using filter[S].
    [13] LEONG E C, HE L, RAHARDJO H. Factors affecting the filter paper method for total and matric suction measurements[J]. Geotechnical Testing Journal, 2002, 25(3): 1-12.
    [14] 孙德安, 张俊然, 吕海波. 全吸力范围南阳膨胀土的土-水特征曲线[J]. 岩土力学, 2013, 33(8): 1839-1846. (SUN De-an, ZHANG Jun-ran, LU Hai-bo. Soil-water characteristic curve of Nanyang expansive soil in full suction range[J]. Rock and Soil Mechanics, 2013, 33(8): 1839-1846. (in Chinese))
    [15] OIMLR 121饱和盐溶液标准相对湿度值[S]. 2000. (OIMLR 121 The standard values of relative humidity for saturated salt solutions[S]. 2000. (in Chinese))
    [16] FREDLUND D G, XING A. Equations for the soil-water characteristic curve[J]. Canadian Geotechnical Journal, 1994, 31(3): 521-532.
    [17] WASHBURN E W. Note on a method of determining the distribution of pore sizes in a porous material[J]. Proceedings of the National Academy of Sciences of the United States of America, 1921, 7(4): 115-116.
    [18] KODIKARA J, BARBOUR S L, FREDLUND D G. Change in clay structure behaviour due to wetting and drying[C]// Proceedings of 8th Australian-Zealand Conference on Geomechanics. Hobart, 1999: 179-185.
    • 相关文章
    • 施引文献
    • 资源附件(0)
计量
  • 文章访问数: 
  • HTML全文浏览量:  0
  • PDF下载量: 
  • 被引次数: 0
出版历程
  • 收稿日期:  2016-05-18
  • 发布日期:  2016-10-19

目录

摘要
HTML全文
    参考文献(18)
    相关文章
    施引文献
    资源附件(0)

    /

    返回文章
    返回
    版权所有 © 2010水利部交通部国家能源局南京水利科学研究院 苏ICP备05007122号-11公安联网备案号：32010602011255
    编辑部地址：南京市虎踞关34号《岩土工程学报》编辑部邮编：210024电话：025-85829534，85829556E-mail: ge@nhri.cn