Suction and separation device and suction and separation method for muck in viscous virtual soil pile hole

The invention provides a suction and separation device and a suction and separation method for muck in a viscous virtual soil pile hole, and belongs to the technical field of building construction equipment. The suction and separation device for the muck in the viscous virtual soil pile hole concretely comprises a vortex separation cylinder, a muck collecting cylinder and a discharging valve, wherein the vortex separation cylinder is a conical cylinder; the muck collecting groove protruded outwards and winding spirally from top to bottom is arranged on the side wall of the conical cylinder; the muck collecting groove communicates with an inner cavity of the conical cylinder; a muck movement direction of the muck collecting groove is opposite to an airflow movement direction of the inner cavity of the conical cylinder; the muck collecting cylinder is arranged on the bottom part of the vortex separation cylinder; and the discharging valve is arranged on the bottom part of the muck collecting cylinder. By utiliz