Method for installing outdoor process pipelines

Abstract

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 collecting pit of the road, on the gravel layer at the bottom. Due to the adoption of the method, various pipelines can be flexibly arranged according to the distances of different pipelines; and the fine sand is covered on the surface and the plants are planted, so that the embedding depth of the pipelines can be reduced, the excavating detection of the pipelines is facilitated, and the pipelines can be overhauled and replaced by excavating the coarse sand during the overhauling. By arranging the drain pipe, the rainwater can be effectively removed from the coarse sand, and the pipelines can be effectively protected.

Description

technical field [0001] The invention relates to an installation method of an outdoor pipeline, in particular to a method for installing various process pipelines outdoors by industrial and mining enterprises. technical background [0002] At present, the installation of various outdoor process pipelines in industrial and mining enterprises generally adopts two methods, one is direct burial, and the other is integrated pipe trench, but both methods have their own advantages and disadvantages. The comprehensive trench is divided into two types: passable and impassable. Although the maintenance personnel can pass through the pipe trench, which is convenient for maintenance and replacement of pipelines, the volume of this kind of pipe trench is large, generally about 1.8×2 meters, and it needs to be equipped with lighting, ventilation, waterproof, drainage and other facilities. From the structural point of view, problems such as settlement, waterproof and drainage are considere...

AI Technical Summary

Problems solved by technology

Although the maintenance personnel can pass through the pipe trench, which is convenient for maintenance and replacement of pipelines, the volume of this kind of pipe trench is large, generally about 1.8×2 meters, and it needs to be equipped with lighting, ventilation, waterproof, drainage and other facilities. From the structural point of view, problems such as settlement, waterproof and drainage are considered, so the cost is relatively high; the impassable pipe trench does not need to consider the passage of people, and does not need to be equipped with lighting and ventilation facilities. The volume is relatively small, but it needs to be equipped with waterproof and drainage facilities. According to the specification requirements, more than 30cm of soil should be covered on the top, and excavation needs to be carried out when the pipeline is overhauled, and the work of hoisting the ditch cover needs to be considered.

Although the code allows water supply and drainage pipes such as tap water, reclaimed water, and fire hydrant pipelines to share the same ditch, it is prone to "thermal pollution"

And pipe trenches are used. If the outdoor groundwater level is relatively high, rainwater and groundwater can easily enter the pipe trenches, and the thermal insulation layer of the thermal pipeline loses its insulation effect after being soaked in water. It needs to be excavated and replaced on the whole line, and the waterproofing of the pipe trenches is more difficult to deal with

The direct burial method needs to be excavated during replacement and maintenance, the labor and operation costs are high, and the pipeline needs to be waterproofed and anti-corrosion treated

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