深厚冲积层土体热物理参数的反演

由于在模拟冻结法凿井施工中深厚冲积层冻结壁温度场发展情况时,存在土体热物理参数的选取问题,文中通过正交试验对不同水平、不同因素的参数进行有限元分析,与已经测得的测温孔实测温度场发展情况进行分析,再通过最小二乘拟合反演出最接近实际情况的土体热物理参数,最后利用此参数结合ANSYS有限元软件来预测未开挖层位的冻结壁温度场变化情况。

INVERSION OF THERMOPHYSICAL PARAMETERS OF THE SOIL

To predict the development of the freezing temperature field in freezing sinking in deep epipedon,this paper analyzing the orthogonal experiment of different levels and factors,which compared with the results through least square fitting to inverse analysis.Then using this parameter to predict the development of temperature field of the layer which isn't excater.