Deep foundation pit slope structure type support construction method

The invention discloses a deep foundation pit slope structure type support construction method, and belongs to the technical field of constructional engineering. According to the method, the foundation pit side slope of the stepped structure is excavated, holes are drilled in the longitudinal stepped face of the side slope, soil nails are drilled into the drilled holes, then grouting is conducted, the soil nails are firmly limited and fixed in soil, then the meshes are connected with anchor heads of the soil nails in a spot welding mode, the meshes are arranged on the slope surface to form a huge mesh plate, and the mesh plate is arranged on the slope surface. The meshes are filled with sprayed fine aggregate concrete and attached to the soil slope surface, the concrete and the mesh plate form a huge supporting plate which is tightly attached to the slope surface through supporting of soil nails, the cement layer on the transverse step surface and soil below the cement layer abut against each other to form a