Pipe jacking rear seat

The utility model discloses a pipe jacking rear seat which comprises an overburden layer, a rear back wall and a rear back plate. A sprue gate is formed in the outer end face of the overburden layer; the back wall is arranged in the sprue gate; the back plate comprises a force bearing plate, dowel bars and a pressure equalizing plate, the dowel bars are arranged in an umbrella rib shape, one end of each dowel bar is connected with the force bearing plate, the other end of each dowel bar is connected with the pressure equalizing plate, and the back plate is in contact with the back wall through the pressure equalizing plate. According to the utility model, the back plate is arranged to be in a structural form comprising the force bearing plate, the dowel bar and the pressure equalizing plate, the force bearing plate bears the counter force of the jacking oil cylinder, and the pressure equalizing plate uniformly transmits the counter force to the back wall, so that the stress area of the back wall is increased,