Method for installing outdoor process pipelines

The invention discloses a method for installing outdoor process pipelines, relates to a method for installing pipelines, in particular to a method for industrial and mining enterprises to install various process pipelines outdoors. In the method, a ditch is excavated and the pipeline is embedded outdoors. The method comprises the following steps of: a, excavating the ditch, wherein the distance from the edge of the ditch to the edge of an outdoor road is 1 to 1.5m; and the width of the ditch is 1.5 to 2m; b, tamping the bottom of the ditch, and then paving a gravel layer with gravel, wherein the thickness of the gravel layer is 20 to 40cm; c, placing the pipeline on the gravel layer, and covering grain-size fine stone or coarse sand with the thickness of 45 to 55cm on the pipeline; d, covering river sand with the covering thickness of 4 to 20cm on the top of the fine stone or coarse sand, and planting plants on the river sand; and e, arranging a drain pipe at a position, which is closest to a rainwater collec