SU1651004A1 - Method of laying subsurface pipelines - Google Patents

Abstract

The invention relates to construction and can be used, in particular, when laying underground pipelines on inclined sections. The purpose of the invention is to increase the reliability of laying pipelines on inclined sections. The method of laying an underground pipeline includes digging a trench, laying a pipeline into it, installing flexible carpets, forming transverse partitions and filling the trench with soil. Trenching is done with the formation of transverse ledges at its bottom and walls. A flexible carpet of filter material is spread over the trench bottom profile. Lay on this carpet pipeline. After that, another carpet of the same material is laid on the pipeline and the walls of the trench, placing it in the ledges and forming transverse partitions at the places of maximum section of the trench. The trenches are filled up with sections within the boundaries between the partitions sequentially, beginning at the bottom of each inclined part of the trench, with the laying of the transverse partitions on the front surface of the filled soil. 3 il. with Ј With /)

Description

The invention relates to construction and can be used, in particular, when laying underground pipelines on inclined sections.

The purpose of the invention is to increase the reliability of laying pipelines on inclined sections.

FIG. 1 is a diagram of laying a pipeline in an inclined trench; in fig. 2 - the same, top view; in fig. 3 is a section A-A in FIG. one.

The underground pipeline is laid as follows.

On an inclined section of the route they dig trench 1 with the formation of transverse ledges 2 at the bottom of ledge 3 and ledges 4 on walls 5 of trench 1. At the same time, in plan (Fig. 2), trench 1 becomes wedge-shaped.

The transition from the narrow part to the wider part of the ledge is made smooth with vertical stops 6 and 7, respectively

on the transverse ledge 2 and the ledge 4 on the walls 5. Then along the profile of the ledge 3, trenches 1 spread a longitudinal trench 1 of a flexible carpet 8 of filter material and a pipeline 9 is laid on this carpet.

After that, with the pipeline 9 and the walls 5 of the trench 1 adjoining, another carpet 10 of the same filtering material is laid, while the carpet 10 is brought into the ledges 3 and 4 with the formation of the transverse partition 11 in the places of the maximum cross section of the trench 1. the soil is filled with soil of the entire trench volume. Backfilling is carried out sequentially in areas between the partitions 11, starting from the bottom of the inclined trench I, with the laying of the transverse partitions 11 on the surface of the sprinkled soil.

Stacked flexible carpets 8 and 10 of filter material are used for production.

ate

start-up water and protect the trench 1 from erosion. The transverse partitions II hold the soil covered by the flexible carpet 10, which ensures the normal ballasting of the pipeline.

Claims (1)

Invention Formula A method of laying an underground pipeline, including digging a trench, laying a pipeline into it, installing flexible carpets, forming transverse partitions and filling the trench with soil, characterized in that, in order to increase the reliability of laying the pipeline on inclined sections, trenching its bottom and walls, a flexible carpet of filter material is spread over the profile of the bottom of the trench, a pipeline is laid on this carpet, after which another carpet of the same material is laid on the pipe gadfly and walls of the trench with placing it in the ledges and the formation of transverse partitions in places of maximum section of the trench, and the trench is filled in areas between the partitions in series, starting at the bottom of each inclined trench section.  7 / 1 A-A / 0 9/024 5 4 2 5 8 9 FIG. 2