Device and method for measuring microscopic deformation of sediment skeleton in hydrate exploitation seepage process

The invention relates to the field of hydrate reservoir microscopic testing, in particular to a device and a method for measuring microscopic deformation of a sediment skeleton in a hydrate exploitation seepage process. The reaction kettle is respectively connected with the temperature control module, the seepage module, the confining pressure control module and the axial loading module; the reaction kettle comprises a kettle body, the top end of the kettle body is connected with a reaction kettle upper end sealing cover in a sealed mode, the bottom end of the kettle body is connected with a reaction kettle lower end sealing cover in a sealed mode, the kettle body comprises a hydrate sample cavity, a confining pressure cavity barrel and a low-temperature circulating liquid outer barrel from inside to outside, and a high-pressure confining pressure cavity is formed between the hydrate sample cavity and the confining pressure cavity barrel outside the hydrate sample cavity in a surrounding mode. And a low-tempe