论文部分内容阅读
针对椭圆形隧道人工水平冻结法支护建立了地表位移的随机介质模型,得到了地表冻胀位移、开挖位移、融沉位移和总位移的解析解。经过工程实例计算结果与大型物理模型试验结果相比较,其地表胀位移、开挖位移、融沉位移和总位移的差值分别为4.8 mm,1.6 mm,1.0 mm和2.2 mm。计算结果表明,椭圆形隧道人工水平冻结法支护的随机介质模型能够较好地反映出地表位移规律,计算结果能满足工程要求。
A stochastic medium model of surface displacement was established for the support of oval tunnel artificial horizontal freezing method. The analytical solutions of surface frost heave displacement, excavation displacement, thawing settlement and total displacement were obtained. The difference between surface displacement, excavation displacement, thawing settlement and total displacement are 4.8 mm, 1.6 mm, 1.0 mm and 2.2 mm, respectively, as compared with those obtained from the large-scale physical model test. The calculation results show that the stochastic medium model supported by the oval tunnel artificial horizontal freezing method can well reflect the law of surface displacement and the calculation results can meet the engineering requirements.