Test device for measuring compression shearing performance of filling material after building tunnel lining wall by laying bricks

The invention discloses a test device for measuring the compression shear performance of a filling material after building a tunnel lining wall by laying bricks. The test device solves the problem that an existing test device cannot well simulate the real state of a pea gravel filling material on a construction site to obtain compression shear performance parameters of the filling material. A rectangular lower box body with a cylindrical inner cavity of the lower box body is combined with a rectangular upper cylinder body with a cylindrical inner cavity of the upper cylinder body; a closed columnar space is constructed; the closed columnar space is filled with a tunnel lining wall rear filling material; a filling material cylinder capable of truly simulating a filling material elastic supporting layer behind a tunnel lining wall is formed; the device comprises a portal frame, a reaction frame, a vertical electric control hydraulic oil cylinder and a horizontal electric control hydraulic oil cylinder, an envir