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Research on DOT Shield Tunnel Back-filled Synchronous Grouting Diffusion and Segments Circumferential Pressure Distribution
Author(s): 
Pages: 106-110
Year: Issue:  10
Journal: Journal of Wuhan University of Technology

Keyword:  双圆盾构 隧道 盾尾注浆 扩散半径 注浆压力;
Abstract: 假定双圆盾构盾尾注浆浆液为牛顿流体,并考虑到浆液粘度随时间变化的特性,提出双圆盾构的管片同步注浆的两阶段扩散机理。浆液首先在盾尾注浆孔附近呈球形扩散,继而沿着盾尾间隙范围内弧形扩散。推导了双圆盾构管片同步注浆的浆液扩散半径及其沿管壁的环向压力计算公式。
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