Micro-space free-angle green supporting and reinforcing system and foundation pit supporting construction method

The invention discloses a micro-space free-angle green support reinforcing system and a foundation pit support construction method, and belongs to the field of building foundation engineering. According to the micro-space free-angle green supporting and reinforcing system, the pile sinking angle of the hydraulic rotary thruster is fixed and freely adjusted through the angle adjusting base, the hydraulic rotary thruster is used for driving the spiral steel pile to be implanted into the soil body to form a spiral steel pile expanding body, large enough and stable bearing force can be provided, and the supporting and reinforcing effect is good. The inclined pile sinking equipment composed of the hydraulic rotary pushing device and the angle adjusting base is compact in structure, small in occupied space, high in construction speed, mute, environmentally friendly, capable of meeting the requirements of different geological conditions and capable of conducting construction in a narrow space; all accessories can be