›› 2011, Vol. 32 ›› Issue (S1): 285-0289.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Experimental study of influence of seepage on grouting in sandy gravels

NING Bo1,2, WU Shi-qiang2, XIE Xing-hua2 , YAN Zhong-min1   

  1. 1. College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, China; 2.Nanjing Hydraulic Research Institute, Nanjing 210029, China
  • Received:2010-12-07 Online:2011-05-15 Published:2011-05-16

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Abstract: By the grouting test in sandbox, the influence of seepage on grouting in sandy gravels is studied. First, the groutability of sandy gravels is verified on condition that the slurry is chosen as grouting material; and the relevant parameters, including water cement ratio, grouting time, grouting pressure and grouting depth are determined. Second, in the absence of seepage, the relationship between grouting pressure, water cement ratio and grout diffusion distance is studied. Finally, under seepage, the relationship between grouting pressure, hydraulic gradient and grout diffusion distance is studied by adjusting water head difference between the upstream and downstream. It is shown that there is no significant influence of seepage on the linear relationship between grouting pressure and grout diffusion distance; and that the relationship between hydraulic gradient and grout diffusion distance shows nonlinear behavior under the different grouting pressures

Key words: seepage, sandy gravel, grouting, diffusion distance

CLC Number: 

  • O 354
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