摘要
冻结施工是软弱含水土层中施工的辅助方法之一,北京地铁大北窑车站区间隧道水平冻结施工工程是我国首例隧道水平冻结施工。以该工程为原型工程,建立了一套以相似理论为基础的物理模型试验系统,开展了冻结及冻融现象的试验研究,对冻结与冻融过程中地表变形进行了分析研究,得出其变化规律和经验公式,可为以后的水平冻结施工技术的扩大应用提供部分理论依据和参考。
Freezing construction is an auxiliary method in soft and water-bearing ground. The horizontal freezing construction was firstly applied in Dabeiyao Station of Beijing metro tunnel. On the basis of the prototype engineering and the simulation theory,a set of physical model test system was established,and the freezing and thawing phenomena were studied by experiments. In the meantime,studies on the deformation of ground surface in both freezing and thawing cases were conducted. The empirical formula and the variation law are presented in the paper.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2004年第15期2643-2646,共4页
Chinese Journal of Rock Mechanics and Engineering
关键词
隧道工程
水平冻结
地表融沉
冻结温度
冻结壁
软弱含水层
工程施工
tunneling engineering,horizontal freezing,thawing settlement of ground surface,exposure time,freezing temperature,frozen wall
