Analysis for features of the freezing temperature field under deflective pipes

In freezing method there is always some deflection in boring freezing hole.On the basis of parameters of a practical project,and consideration of the phase change of water content in soil and the variation of freezing temperature,the features of the temperature field in frozen wall with and without deflection freezing pipes is analyzed with the Finite Element Calculation Software.Some key technical parameters,such as circlecrossing time the thickness and the average temperature of the frozen wall under deflective pipes are obtained.The formulae to calealate average temperature of frozen wall are put forward.It gives instructions to design of deep well and investigation of temperature ture field with multirow freezing pipes.