Controllable expansive soil extrusion device for geotechnical engineering

The invention discloses a controllable expansive soil extrusion device for geotechnical engineering, and belongs to the technical field of civil engineering. The controllable expansive soil extrusiondevice comprises an expansive extrusion cylinder, wherein the upper end and the lower end of the expansive extrusion cylinder are both sealed and packaged with injection bodies, the upper surface of each injection body is provided with a threaded hole and a U-shaped grouting pipe, an adjusting handle is movably clamped to the lower end of each U-shaped grouting pipe through a chuck, and a threadedpipe rod is arranged at the bottom of the adjusting handle. The bottom of the adjusting handle is in threaded connection with the inner wall of each threaded hole through the threaded pipe rod, and arotating platform body and a steel bar fixing piece are arranged in the center of the bottom of each injection body. The top end of the steel bar fixing piece is movably connected with the center ofthe bottom of each injection