Advanced Search
  • 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
Volume 34 Issue 1
Turn off MathJax
Article Contents
Abstract
References
Related Articles
DENG Lin-heng, ZHAN Liang-tong, CHEN Yun-min, JIA Guan-wei. Model tests on capillary-barrier cover with unsaturated drainage layer[J]. Chinese Journal of Geotechnical Engineering, 2012, 34(1): 75-80.
Citation: DENG Lin-heng, ZHAN Liang-tong, CHEN Yun-min, JIA Guan-wei. Model tests on capillary-barrier cover with unsaturated drainage layer[J]. Chinese Journal of Geotechnical Engineering, 2012, 34(1): 75-80.
shu

Model tests on capillary-barrier cover with unsaturated drainage layer

  • MOE Key Laboratory of soft soils and Geoenvironmental Engineering, Zhejiang University, Hangzhou 310058, China)

More Information
  • Received Date: December 02, 2010
  • Published Date: January 19, 2012
    Graphical Abstract
    • Abstract
  • Model tests are carried out to study the response of capillary-barrier cover with unsaturated drainage layer under heavy rainfall situation. The test equipment includes a model box with a dimension of 2 m×1 m×1.2 m, a rainfall simulator and measuring facilities. The materials of fine layer, unsaturated drainage layer and coarse layer of the capillary-barrier cover model are silt, sand and gravel respectively, and the gradient of model is 1<>V: 3<>H. The intensity of simulated rainfall is 65~76 mm/h. During the tests the rainfall infiltration process and lateral drainage phenomenon are observed, and the surface runoff, lateral drainage and percolation through capillary-barrier cover are measured. In Test Ⅰ, runoff accounts for 69.4% of the total rainfall, and most of the infiltration is stored in the silt layer. The lateral drainage of the sand layer is significant, being 3.5% of the total rainfall; and the percolation through the cover is 2.9% of the total rainfall. In Tests Ⅱ and Ⅲ, the infiltration flux is reduced by an addition of bentonite into the silt layer. A delayed response in the lateral drainage is observed in the sand layer, and the percolation is reduced to only 0.8% of the total rainfall in Test Ⅱand no percolation is observed in Test Ⅲ. The model test results indicate that the percolation through the capillary-barrier cover can be controlled under heavy rainfall condition by reducing rainfall infiltration and enhancing capillary barrier effect and lateral drainage capacity. The research makes the application of capillary-barrier cover in humid regions feasible.
    • FullText(HTML)
    • References (15)
  • [1]
    BONAPARTE R, GROSS B A, DANIEL D E, et al. Draft technical guidance for RCRA/CERCLA final covers[S]. 2004.
    [2]
    ALBRECHT B A, BENSON C H. Effect of desiccation on compacted natural clays[J]. Journal of Geotechnical and Geoenvironmental Engineering. 2001, 127 : 67 – 75.
    [3]
    QIAN X, KOERNER R M, GRAY D H. Geotechnical aspects of landfill design and construction[M]. New Jersey: Prentice Hall. 2002.
    [4]
    SCANLON B R, REEDY R C, KEESE K E, et al. Evaluation of evapotranspirative covers for waste containment in arid and semiarid regions in the southwestern USA[J]. Vadose Zone Journal, 2005, 41): 55 – 71.
    [5]
    HAUSER V L, WEAND B L, GILL M D. Alternative landfill Covers[R]. Brooks: Air Force Center for Environmental Excellence, Technology Transfer Division, Brooks AFB, TX. 2001.
    [6]
    RAHARDJO H, KRISDANI H, LEONG E. Application of unsaturated soil mechanics in capillary barrier system[C]// Third Asian Conference on Unsaturated Soils. NSW: Science Press, 2005: 127 – 137.
    [7]
    STORMONT J C. Unsaturated drainage layers for diversion of infiltrating water[J]. Journal of Irrigation and Drainage Engineering, 1997, 123 : 364 – 366.
    [8]
    BENSON C H, KHIRE M V. Earthen covers for semi-arid and arid climates[J]. Geotechnical Special Publication, 1995.
    [9]
    BENSON C H, ALBRIGHT W H, ROESLER A C, et al. Evaluation of final cover performance: field data from the Alternative Cover Assessment ProgramACAP)[C]// Proc Waste Management, 2002, 2 : 1 – 15.
    [10]
    MORRIS C E, STORMONT J C. Evaluation of numerical simulations of capillary barrier field tests[J]. Geotechnical and Geological Engineering, 1998, 163): 201 – 213.
    [11]
    MORRIS C E, STORMONT J C. Parametric study of unsaturated drainage layers in capillary barrier[J]. Journal of Geotechnical and Geoenvironmental Engineering, 1999, 12512): 1057 – 1065.
    [12]
    STORMONT J C. The effectiveness of two capillary barriers on a 10% slope[J]. Geotechnical and Geological Engineering, 1996, 144): 243 – 267.
    [13]
    LAMBE T W. Soil testing for engineers[M]// Series in Soil Engineering. New York: Wiley; London: Chapman & Hall, 1951.
    [14]
    VAN GENUCHTEN M T. A closed-form equation for predicting the hydraulic conductivity of unsaturated soils[J]. Soil Sci Soc Am J, 1980, 445): 892 – 898.
    [15]
    TAMI D, RAHARDJO H, LEONG E C. Effects of hysteresis on steady-state infiltration in unsaturated slopes[J]. Journal of Geotechnical and Geoenvironmental Engineering, 2004, 130 : 956 – 967.
    • Related Articles

  • Related Articles

    [1]Effect of initial static shear stress and cyclic loading direction on the liquefaction behavior of saturated dense sand[J]. Chinese Journal of Geotechnical Engineering. DOI: 10.11779/CJGE20240591
    [2]YING Xu, LI Min, XIA Baihui, SHEN Nanjie, JIANG Gang, ZHONG Jianfeng. Shear behavior of saturated silt under complex unloading paths[J]. Chinese Journal of Geotechnical Engineering, 2023, 45(S1): 75-78. DOI: 10.11779/CJGE2023S10006
    [3]MA Wei-jia, CHEN Guo-xing, QIN You, WU Qi. Experimental studies on effects of initial major stress direction angles on liquefaction characteristics of saturated coral sand[J]. Chinese Journal of Geotechnical Engineering, 2020, 42(3): 592-600. DOI: 10.11779/CJGE202003022
    [4]GUO Ying, HAN Jie. Influence of sampling methods and stress paths on the consolidated undrained shear behavior of saturated fine sand with medium density[J]. Chinese Journal of Geotechnical Engineering, 2016, 38(z2): 79-84. DOI: 10.11779/CJGE2016S2013
    [5]ZHOU Zheng-long, CHEN Guo-xing, WU Qi. Effect of initial static shear stress on liquefaction behavior of saturated silt[J]. Chinese Journal of Geotechnical Engineering, 2016, 38(3): 504-509. DOI: 10.11779/CJGE201603014
    [6]Stress-strain properties for the frozen media sand at different temperature gradients during two stress paths[J]. Chinese Journal of Geotechnical Engineering, 2010, 32(3).
    [7]GUO Ying, LUAN Maotian, HE Yang, XU Chengshun. Effect of variation of principal stress orientation during cyclic loading on undrained dynamic behavior of saturated loose sands[J]. Chinese Journal of Geotechnical Engineering, 2005, 27(4): 403-409.
    [8]Chu Jian, Xu Zhen hong. Strain  Path  Testing  Techniques  and  Its  Application    in  the  Study  of  Strain  Softening[J]. Chinese Journal of Geotechnical Engineering, 1996, 18(5): 50-55.
    [9]Qiu Jinying. Effects ofStress Path on Stress-Strain BehaViour of Sand[J]. Chinese Journal of Geotechnical Engineering, 1995, 17(2): 75-82.
    [10]Liu Zude, Lu Shiqiang, Yang Tianlin, Li Baiqiao. The Influence of Stress Path on the Stress-strain Behavior of Earthfills and its Application[J]. Chinese Journal of Geotechnical Engineering, 1982, 4(4): 45-55.
    • Supplements (0)

Catalog

    Get Citation
    PDF
    XML
    Article views (1219) PDF downloads (731) Cited by()
    Related
    Copyright © 2010 Editorial By Chinese Journal of Geotechnical Engineering 苏ICP备05007122号-11公安联网备案号：32010602011255
    Editorial Office address：34 Hujuguan,Nanjing 210024,ChinaPostal Code：210024Tel：025-85829534，85829556E-mail: ge@nhri.cn

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return