Construction method for laying water pipes

Abstract

The invention relates to a construction method for laying water pipes, mainly solving the problems of high cost, transport expense and maintenance expense of a precast rigid pipe adopted for a traditional heavy-calibre water pipe. The construction method comprises the following steps of: excavating a foundation, laying a cushion layer at the bottom of a pipe ditch, laying pipelines, injecting water to make a core, filling concrete and backfilling the pipe ditch. In order to be convenient for maintenance, an operation well is arranged at the part of each three-way valve. Compared with an iron pipe and a steel pipe, a plastic flexible pipe has the advantages of greatly reduced production cost, good corrosion resistance, no water leakage, long service life, on-site construction, simple operation and improved construction efficiency. Compared with the traditional underground pipeline, the invention has simple operation for the maintenance and reduces the maintenance expense.

Description

technical field [0001] The invention relates to the field of outdoor public water delivery main pipelines, in particular to a construction method for laying underground water delivery pipelines. Background technique [0002] Most of the existing large-diameter water supply and drainage projects need to lay underground pipes. Most of the water pipes used are cast iron or steel, and some of them use cement on the inner and outer layers and cast iron on the inside. The common feature of these pipes is that they all use rigid Tube. These pipelines are pre-produced and processed by the manufacturer before construction. The finished products are divided into sections, and the length of each section is relatively short. When laying and installing, they are transported to the construction site by professional transport vehicles. During the construction process, every two sections of pipelines are connected with joints. Or lay it underground after welding. [0003] Existing pipelin...

AI Technical Summary

Problems solved by technology

[0003] Existing pipelines consume a lot of transportation costs in the laying process, and because the pipelines are all connected by joints, too many joints are prone to leakage and other failures, requiring a lot of maintenance and repair costs; construction efficiency is low

In addition, the pipeline material is made of steel, which has high cost and weak corrosion resistance. There are also some areas with harsh terrains that cannot be constructed due to the inability to transport pipes.

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