In order to obtain the temperature distribution and frost deformation law of frozen wall

the shallow-buried rectangular freezing engineering

which is a construction of the line 3 to cross line 6 in Guangzhou metro

was studied through the model test based on similarity theory. Conclusions are drawn as follows. Firstly

the temperature of the soil closed to the ground surface drops slowly under the influence of ground heat dissipation in shallow-buried freezing engineering .And the frozen wall closed to the ground surface is relatively weak. In the process of freezing

the average development speed of internal frozen wall is about 1.5 times that of the outward frozen wall. Secondly

small amount of frost heaving deformation is generated in the initial freezing stage. The freezing construction is proceeding with high-temperature brine; and the closed frozen wall is not formed at this stage. Thirdly

when the frozen wall is closed

the frost deformation of frozen wall increases obviously at the time of the freezing construction with low-temperature brine. In general

the soil frost heave deformation tends to decrease when the soil layer depth becomes smaller because the upper soil layer is compacted. There is significant interaction effect between the upper shallow covering and frozen wall in shallow-buried rectangular freezing engineering. This implies that the upper soil layer

which will produce deformation in the advance of the freezing process

will affect the temperature field distribution in frozen wall.