Method for installing pipeline in tunnel and auxiliary installation equipment thereof

The invention provides a method for installing a pipeline in a tunnel, which comprises the following steps: S1, after a pipeline installation frame is transported to a proper position through a rail car, the installation frame is installed to the proper position through a manipulator on the rail car, and then the installation frame is fixed through a bolt. According to the method for installing the pipeline in the tunnel and the auxiliary installation equipment thereof, after the pipeline is hoisted to the position above the supporting frame through a crane outside the tunnel, one end of the pipeline is limited through a limiting structure, meanwhile, a plurality of telescopic pieces are arranged in a welding structure to be matched with a plurality of fixing plates, and the other end of the pipeline is limited; the connecting positions of the pipelines are welded through the welding structures, so that the stability is improved when the pipelines are welded and connected, the welding quality is enhanced, the