煤田地质与勘探2019，Vol.47Issue(1)：155-161,7.DOI:10.3969/j.issn.1001-1986.2019.01.024
新型管幕冻结法温度场影响参数分析
Analysis of influencing parameters of temperature field in a new pipe-roofing freezing method
摘要
Abstract
The development status of the temperature field around the freezing pipe in the method of pipe roofing freezing is the technical focus of this construction method. In order to study the development of the temperature field in this method, two paths are selected in the model, and analysis points are placed on the path. By analyzing the effects of soil thermal conductivity, volumetric heat capacity, latent heat of phase change, and original ground temperature on the development law of the temperature field, the following conclusion was drawn: Compared with the method of freezing the pipe curtain of the Gongbei tunnel in Hong Kong-Zhuhai-Macau, the new method of pipe freezing was adopted. Supporting forms are more flexible and diverse, and are less constrained by the terrain;soil thermal conductivity has a significant effect on the temperature field, the greater the thermal conductivity, the faster the temperature drop, and the greater the magnitude; the volumetric heat capacity has a greater effect on the temperature field, the smaller the volumetric heat capacity, the faster the temperature drop, and the greater the magnitude; the latent heat of soil phase change has almost no effect on the change of temperature field; the lower the original ground temperature, the shorter the freeze time required to reach the same temperature. The results obtained can be used as reference for similar projects in the future.关键词
新型管幕冻结法/温度场/影响参数/数值分析Key words
new pipe roofing freezing method/temperature field/influence parameters/numerical analysis分类
交通工程引用本文复制引用
吴雨薇,李春芳,胡俊,王志鑫,汪树成..新型管幕冻结法温度场影响参数分析[J].煤田地质与勘探,2019,47(1):155-161,7.基金项目
海南省自然科学基金项目(518QN307,518MS122) （518QN307,518MS122）
中国博士后科学基金项目(2018M630722) （2018M630722）
海南省研究生创新科研课题(Hys2018-165) （Hys2018-165）
