Influence of Slope on Slurry Diffusion in Grouting Treatment of Immersed Tunnel

Abstract

Abstract: Slopes caused by unevenness of cushion or tunnel design will affect slurry diffusion, when adopting grouting method in foundation treatment of immersed tunnel. Model test was conducted to study slurry diffusion of singlehole and dualhole grouting with different slopes. It was indicated that diffusion velocity along downhill direction would be larger than that along uphill direction apparently, which shows that the flow of slurry is influenced by the gravity obviously, trending to the lower position. With the larger slope, the difference between diffusion velocity along uphill and downhill direction would be greater. Based on the test result, it ought to inject at the lowest grouting hole firstly, and along the uphill direction in turn, to avoid voids.

Key words: immersed tunnel, foundation treatment, grouting method, slope, slurry diffusion

CLC Number:

U455.46

LI Ke, DU Jia-Lun, HUANG Xing-Chun. Influence of Slope on Slurry Diffusion in Grouting Treatment of Immersed Tunnel[J]. Journal of Shanghai Jiaotong University, 2011, 45(05): 629-633.

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