【作者】 郑铁骑；

【导师】 刘殿书； 杨仁树；

【作者基本信息】 中国矿业大学（北京） ， 岩土工程， 2013， 博士

【摘要】 本文以室内试验、理论分析、数值分析和现场实测为研究手段,对白垩系含水软岩地层冻结与强制解冻理论与应用进行了较为深入、系统的研究。论文研究了从-5℃到-15℃条件下的白垩系地层的冻土力学和热物理性能。建立了各阶段的温度场数学模型和相应的热传导控制方程以及冻结壁冻融温度场计算模型,给出了冻结壁形成和强制解冻融化过程及规律；分析了影响冻结壁冻融温度场的各个因素及其对温度场的显著性影响,同时对冻结和强制解冻温度场进行了多因素回归分析。通过冻结与强制解冻交互作用下的温度场、冻结壁冻胀以及井壁的受力变形规律研究,得到了单一冻结和冻融交互作用下的温度场、冻结壁冻胀以及井壁受力变形规律。以灵东煤矿冻结和强制解冻为工程背景,进行了白垩系地层冻结信息化施工技术的研究。更多还原

【Abstract】 In this paper, we use laboratory test,theoretical analysis, numerical analysis and field measurement as aresearch tool,to make a more in-depth,systematic study in the theory and the application of the ground freezing and mandatory thawing in the Cretaceous aqueous soft rock.We studied the thermophysical properties and frozen soil mechanics of the Cretaceous stratum, when the temperature ranged from-5℃to-15℃, created a mathematical model of the temperature field in each stage. We also established the corresponding thermal governing equations. Based on a model we established to calculate the freezing and thawing temperature field in the shaft, we studied the process and the laws of the formation and the forced thawing process of the frozen wall. Every factors effecting the freezing and thawing temperature field and the significance of them. were studied.. We carried on multivariate regression analysis on freezing and forced thawing temperature field. We analysed the temperature field in the interaction of the freeze and mandatory thaw, freeze wall by the force of the frost heave, and the borehole wall deformation law. We also studied the temperature field under a single freeze and freeze-thaw interaction, frost heaving of the freeze wall and the changes of the borehole wall by the force-deformation. A research of freeze information construction technology on Cretaceous strata is based on freeze and mandatory thaw engineering of lingdon coal mine.更多还原