周期性裂缝灌浆对电渗处理淤泥软土的影响

doi:10.12066/j.issn.1007-2861.2219

Abstract

Abstract:

During electro-osmosis, the electrical resistance of the soil increases and electro-osmotic efficiency decreases owing to the appearance of fractures in the soil. Fracture grouting is a method that can be applied to solve this problem. In this study, under the equipotential premise gradient, experimental laboratory tests through electro-osmosis were performed to investigate the effects of various fracture-grouting intermittence frequencies using 1.5% NaOH solution on each of five dredged slurry samples. The results were analysed based on the extracted water mass, drainage rate, surface settlement, electric current, energy consumption effect, water content, and undrained vane shear strength. The results showed that fracture grouting could improve the effect of electro-osmosis. In addition, the experimental findings indicated that an optimal grouting ratio existed, which effectively decreased the water content, increased the vane shear strength, and reduced the energy consumption effect.

Key words: fracture grouting, electro-osmosis, intermittence, dredged slurry

CLC Number:

TU447

LIU Feiyu, ZHOU Jie, WANG Jun, LI lingyu. Influence of intermittent fracture grouting electro-osmosis for dredged slurry strengthening[J]. Journal of Shanghai University（Natural Science Edition）, 2020, 26(4): 651-661.

Figures/Tables 12

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References 24

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Influence of intermittent fracture grouting electro-osmosis for dredged slurry strengthening

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