Steel pipe supporting device for supporting deep foundation pit

The utility model relates to the technical field of building construction, in particular to a steel pipe supporting device for supporting a deep foundation pit, which is characterized in that a steel pipe is fixedly connected with a sliding connecting seat, the inner wall of the sliding connecting seat is connected with an extension rod in a sliding manner, and the end part of the extension rod is provided with an annular groove; the double-shaft telescopic cylinder is fixedly connected with an adjusting sleeve; the fixed cylinder is fixedly connected to the lower end of the sliding connecting base, a rotating base is slidably connected into the fixed cylinder, a limiting rod is fixedly connected to the top end of the rotating base, and the top end of the limiting rod is slidably connected with the annular groove; the inner wall of the guide sleeve is slidably connected with a guide sliding rod, and the end part of the guide sliding rod is in socket connection with a socket mounting seat; the device has the b