Soil lifting system and soil lifting method for building deep foundation pit construction in narrow zone

The invention discloses a soil lifting system and soil lifting method for building deep foundation pit construction in a narrow zone. A large closure plate is adopted on a first concrete support around a hole as a first closure plate for arrangement of soil lifting equipment and a soil heap platform. A steel headframe soil lifting crane is adopted in the vertical soil lifting equipment and comprises a steel headframe erected on the hole and electric blocks suspended on the steel headframe. The soil heap platform is arranged on the first closure plate around the hole and is an area defined by a retaining wall and a water retaining bank. The large closure plate is adopted on the first concrete support around the hole as the first closure plate, a conveying channel is provided for a conveying vehicle, a material storage yard is provided for subsequent construction of a main structure, and a field is provided for mounting of the soil heap platform and the steel headframe. A soil heap area is arranged on the first closure plate, and used for temporally piling up earthwork which cannot be conveyed out in time. The steel headframe soil lifting equipment is adopted, the limit of field reinforced concrete ramps is avoided, the soil outlet path is increased, the construction period is greatly shortened, and the method is especially suitable for narrow-field deep foundation pit construction.