Evaluation of the Grouting Effect of the Change of Grout Hole Spacing in Splitting Grouting for Dams

Abstract:

The technique of splitting grouting for dams is one of the important technical approaches to improve the inner quality of dam construction. However, the construction cost is too high with the current technological standard, which restricts the further promotion of this technology. Based on the assumption that the other conditions of construction process remained unchanged and by obeying the law of interaction between the placement of grout-hole spacing and the actual anti-seepage effect during splitting grouting, Mohr-Coulomb Hardening constitutive model was adopted in this paper on the basis of large-scale finite element numerical algorithm. Through the fluid-solid coupling computation of grout holes of different spacing, the distribution law of various factors during splitting grouting, such as the pore water pressure generated by seriflux and the stress and strain of dam, was studied first. Next, the mechanism of reinforcement and seepage of splitting grouting seriflux in soil body was revealed, and the influence of this mechanism on the stability of dam body was also investigated. Finally, the effect of splitting grouting was evaluated.

• Periodical: Applied Mechanics and Materials (Volume 151)
• Pages: 295-299
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.151.295
• Online since: January 2012
• Authors: Ke Wu, Ming Yue Ma
• Keywords: DAM, Fluid Solid Coupling, Numerical Simulation, Splitting Grouting

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