采矿与安全工程学报2016，Vol.33Issue(2)：297-304,8.DOI:10.13545/j.cnki.jmse.2016.02.017
考虑土性参数不确定性的多圈管冻结温度场分析
Analysis of temperature field for multi-circle-pipe freezing considering variability of soil parameters
摘要
Abstract
AbstractIn order to further investigate the effect of spatial variability of soil parameters on the tem-perature field of multi-circle-pipe freezing, this paper has proposed a method to calculate the plane av-erage variance from just the point variance by simulating heat transfer coefficient, specific heat capacity and latent heat of phase transition as spatially random fields, and by means of the local average theory of random field. Based on Neumann stochastic finite element method, the stochastic finite element cal-culation program has been independently developed to figure out the distribution law of temperature field of multi-circle-pipe freezing. The results have shown that the random field and the local average theory can consider the variability of soil parameters reasonably. The two-dimensional triangular local average method can perfectly be combined with triangular finite element method, and the corresponding relation is clearer, and the program is simpler to compile. The randomness of soil parameters results in the randomness of temperature field. In this paper, the mean temperature and the average thickness of stable frozen wall are -22.6℃ and 10.5 m. Both of their variable coefficients are 0.224. The mean temperature of shaft-lining is -12.8℃ and its standard deviation is 2.4℃.关键词
参数变异性/多圈冻结管/温度场/随机有限元法Key words
variability of parameters/multi-circle-freezing pipe/temperature field/stochastic finite element method分类
矿业与冶金引用本文复制引用
王涛,周国庆,阴琪翔,夏利江,刘宇翼..考虑土性参数不确定性的多圈管冻结温度场分析[J].采矿与安全工程学报,2016,33(2):297-304,8.基金项目
国家重点基础研究发展计划(973)项目(2012CB026103)；国家高技术研究发展计划(863)项目(2012AA06A401)；江苏省普通高校研究生科研创新计划项目(CXLX13_942) （973）
