Three-dimensional loading structure of ultra-large deep engineering disaster physical simulation facility

The invention discloses a three-dimensional loading structure of an ultra-large deep engineering disaster physical simulation facility. The three-dimensional loading structure comprises horizontal and vertical ultra-large counterforce frames, an ultra-long stroke lifting and locking hydraulic cylinder, five array distributed hydraulic actuator groups and a linear array distributed hydraulic actuator group, the horizontal ultra-large counterforce frame is of a frame structure which is formed by splicing eight sections of arched beams and is round outside and square inside and wound with prestressed carbon fibers, and the vertical ultra-large counterforce frame is of a double-beam four-column type pretightening force frame structure. The five array distributed hydraulic actuator sets are distributed on the periphery of the horizontal ultra-large counter-force frame and the top of the vertical ultra-large counter-force frame, and the linear array distributed hydraulic actuator set is located in the middle of the