Soft soil foundation single-hole depth air compression drainage device and working method thereof

A soft soil foundation single-hole depth air compression drainage device, comprising:

• an air compression pipe (1) and a water drainage pipe (2), wherein
• a water drainage cavity body (3) and an air diffusion cavity body (4) are buried respectively in a soft soil foundation (6),
• the air diffusion cavity body (4) is located below the water drainage cavity body (3),
• the air diffusion cavity body (4) comprises a rigid bracket (41) and a geofabric (42),
• the rigid bracket (41) is a cylindrical body which is externally wrapped with the geofabric (42) and buried along a vertical direction of the soft soil foundation (6), and
• the water drainage cavity body (3) is enclosed by a water-permeable pipe and buried along the vertical direction of the soft soil foundation (6);
• a first connection opening is opened on a top end surface of the air diffusion cavity body (4) and is connected with the air compression pipe (1), wherein
• the air compression pipe (1) protrudes out of a ground surface along the vertical direction of the soft soil foundation (6) and communicates with an inflation pump (5);
• a second connection opening is opened on a top end surface of the water drainage cavity body (3) and is connected with the water drainage pipe (2), wherein
• one end of the water drainage pipe (2) protrudes to a bottom of the water drainage cavity body (3), and
• other end of the water drainage pipe (2) protrudes out of the ground surface along the vertical direction of the soft soil foundation (6).