Test device for making research on soil freezing and thawing temperature field, water migration and deformation law

The invention relates to a test device for making a research on a soil freezing and thawing temperature field, water migration and a deformation law. The test device comprises a freezing bottom plate for feeding freezing liquid into the device, a split soil sample cavity which is arranged on the freezing bottom plate and used for storing soil samples, a top cover arranged at the top of the split soil sample cavity in a covering manner, a soil sample cover plate which is arranged in the split soil sample cavity and used for compacting the soil samples, a water replenishing connection pipe which is connected with a water replenishing device and used for adding water into the soil samples, and a bracket connected between the top cover and the freezing bottom plate. Compared with the prior art, the test device is simple in structure and convenient to operate, and a certain basis is provided for construction using an artificial ground freezing method.