Device and method for adjusting multi-dimensional elevation of large-diameter pipeline

The invention provides a large-diameter pipeline multi-dimensional elevation adjusting device and adjusting method.The large-diameter pipeline multi-dimensional elevation adjusting device comprises a mounting support, and an arc-shaped mounting face matched with a pipeline in shape is formed on the mounting support; the first elevation adjusting assembly is arranged in the middle of the mounting support, and the first elevation adjusting assembly applies acting force in the vertical direction to the pipeline so as to adjust the elevation of the pipeline in the vertical direction; the second elevation adjusting assembly is arranged on the arc-shaped mounting face of the mounting support, and the second elevation adjusting assembly exerts radial acting force on the pipeline so as to adjust the radial position of the pipeline. According to the pipeline mounting device, multi-direction adjustment in the pipeline mounting process can be achieved, so that the pipeline mounting precision is guaranteed, and the mount