Numerical Simulation And Application Research On Freezing Wall Temperature Field Of Chengcun Mine Main Shaft

The paper makes the finite element numerical simulation for the freezing wall temperature field about the deep thick alluvium combining to freezen soil's heat physical property and the main factors that influence freezing temperature field on the base of present theory of the shaft freezing temperature field. The paper set up the geometrical model according to the actual deflexion and on the basis set up the finiteelement model by the American large finite element simulation program-ANSYS.Firstly sets up the finite element analysis format of the freezing wall's temperature field on the base of present theory of numerical analysis, subsequently discusses the finite element calculation method of freezing wall's temperature field. Secondly get the rule of temperature field about the clay in deep section of the ground and the clay contain stone in middle section of the ground through the numerical simulation to Chengcun mine main shaft. Then get the valid computer method of the freezing wall temperature field by contrasting to the local actual survey analysis. Lastly on the base of the numerical simulation to Chengcun main shaft I analyze the Zhaoguyikuang mine auxiliary shaft by numerical simulation and get the time of the freezing wall's closure, the forming status of freezing wall and the expand velocity of freezen soil.This paper considers the affection of all sorts of factors comprehensively, such as the decline of freezing tubes, latent heat of phase change etc. Research the distribution of the freezing wall's temperature field in deep thick alluvium detailed, get the reasonable conclusion, and provides the direction for the deep thick alluvium freezing method in shaft sinking.