Qizhi Chen1,2, Wensheng Cheng1,2, Baoping Zou1,2,*, Bowen Kong1,2, Yansheng Deng1,2, Xu Long3,*
Journal of Polymer Materials, Vol.42, No.2, pp. 463-475, 2025, DOI:10.32604/jpm.2025.064257
- 14 July 2025
Abstract The rapid development of urban rail transit has posed increasing construction and operational challenges for metro tunnels, often leading to structural damage. Grouting technology using cement-based materials is widely applied to address issues such as seepage, leakage, and alignment correction in shield tunnels. This study investigates the additional stress induced by grouting in silty soil layers, using cement-based grouts with different water-to-cement ratios and polyurethane-modified cement-based materials. Results show that additional stress decreases with depth and is more influenced by horizontal distance from the grouting point. In staged grouting, the first injection phase contributes about More >
Login
Register
