›› 2008, Vol. 29 ›› Issue (11): 3128-3132.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Research on hydraulic characteristics of partially clogged nonwoven geotextiles under pressure

LI Fu-qiang1, WANG Zhao 2, CHEN Lun3, HU Yan-jun2   

  1. 1. Guangxi Electric Power Industry Survey and Design Institute, Nanning 530023, China; 2. School of Civil and Architectural Engineering, Wuhan University, Wuhan 430072, China; 3. Department of Hydraulic and Hydropower Engineering, Tsinghua University, Beijing 100084, China
  • Received:2007-07-05 Online:2008-11-10 Published:2013-08-07

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Abstract: A laboratory test program was conducted on partially clogged nonwoven geotextiles under pressure. The results of test showed that the presence of soil particles inside the geotextile reduced its compressibility and permittivity, a reduction factor (RF) of equivalent opening size was proposed during filtration. RF of 1.5－2.5 was suggested for the drainage of bank slope. The expression presented by Giroud (1996) demonstrated a satisfactory forecast of coefficient of permeability of non-clogged geotextiles under pressure. Comparison of measured and predicted permeability values for partially clogged geotextile specimens indicated that an expression of equivalent porosity has a better prediction of soil impregnated specimens under pressure.

Key words: pressure, partially clogged, reduction factor, equivalent porosity

CLC Number: 

  • TU 45
  • Please send e-mail to pingzhou3@126.com if you would like to read full paper in English for free. Parts of our published papers have English translations.
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