摘要
考虑了冻结孔的实际偏斜状况,提出了基于平面有限元模型的冻结温度场数值反演及模拟方法.介绍了模型的基本特征、计算参数及数值反演、模拟的基本步骤.由于能够模拟冻结孔的实际分布状况及冻结管外表面的温度下降过程,并且以土性参数的反演为前提,因而该模型能够以较高的精度模拟冻结温度场的发展过程.通过某冻结温度场的数值模拟实例验证了该方法的可行性,并对影响数值模拟结果的主要因素进行了分析.
Based on two-dimensional finite element model a numerical simulation method was developed for back analyzing and simulating temperature field during shaft sinking with artificial ground freezing method. In this method the deflection of the freezing bores was taken into consideration. Basic characteristics, parameters of the model and basic procedures were introduced. The model is capable of simulating the developing process of freezing temperature field with preferable precision, because it can simulate the actual distribution of freezing bores and temperature descending process of the outer surface of freezing pipes, as well as it is based on the soil parameters reversion. The engineering feasibility of this method was verified according to the application of the method in a case of freezing temperature field simulation. Finally, main factors affecting the results of numerical simulation were discussed.
出处
《中国矿业大学学报》
EI
CAS
CSCD
北大核心
2005年第5期626-629,共4页
Journal of China University of Mining & Technology
关键词
人工地层冻结法
矿井建设
冻结温度场
数值模拟
artificial ground freezing method
shaft sinking
freezing temperature field
numerical simulation
