Loose earthwork supporting device for geotechnical engineering investigation engineering

The utility model relates to the technical field of geotechnical investigation engineering, and provides a loose earthwork supporting device for geotechnical engineering investigation engineering, which comprises a bottom plate, a first supporting plate and second supporting plates, one side of the top of the bottom plate is rotatably connected with the first supporting plate, and the two sides of the first supporting plate are symmetrically and rotatably connected with the second supporting plates. A fixing mechanism is arranged at the top of the first supporting plate, and a connecting mechanism is arranged on one side of the first supporting plate. And the connecting mechanism comprises fixing sleeves, the fixing sleeves are symmetrically and fixedly connected to the positions, close to the two sides of the second supporting plate, of the rear portion of the first supporting plate, fixing rods are slidably connected to the interiors of the fixing sleeves, and springs are installed on the outer sides of the