Freezing well wall miniature wall base and bearing capacity calculation method and construction method thereof

The invention discloses a freezing well wall miniature wall base which comprises wall base structures arranged on the periphery of an outer-layer well wall of a freezing well double-layer well wall at intervals, the wall base structures and the outer-layer well wall are integrally poured, the wall base structures are simple in design, the wall base structures and the double-layer well wall are of a reinforced concrete structure, and integral pouring construction is easy; the invention further provides a bearing capacity calculation method of the frozen well wall miniature wall base, and the situation that the design value of the miniature wall base has no basis during construction of the frozen wall surrounding rock wall base tunneled by a vertical shaft heading machine at present is improved; the invention further provides a construction method of the freezing well wall miniature wall base, shaft tunneling construction is conducted through a vertical shaft tunneling machine, the wall base ring groove is form