SU1222965A1 - Method of constructing pipeline underwater section - Google Patents

Description

The invention relates to construction and can be applied in the construction of trunk pipelines as well as in cases when it is necessary to immerse a stretched sealed body having a buoyancy.

The purpose of the invention is to simplify and increase the efficiency of the process of constructing an underwater pipeline section by placing a bundle of flexible permeable sleeves along the outer surface of the pipeline, filling them layer-by-layer with mineral soil using a hydronic tank and using the sleeve filled with soil as ballast after laying the pipeline to the bottom of the reservoir.

Fig. 1 shows a pipeline immersion scheme; in fig. 2 - section A-A in FIG. 1i in FIG. 3 - the same, after laying the pipeline to the bottom

The method is carried out in the following manner.

At the edge of the reservoir, pipeline 1 is equipped with flexible sleeves 2 made of water-permeable fabric, for example, dornitol, placed along the pipeline forming a foot / 1

3, for example, from wooden slats, fastened with brackets 4 to a rubber-fabric base 5, in which there are holes 6 for discharging water, filtered from the pulp, through a flexible permeable sleeve. In the transport position, the rubber fabric base 5 fits snugly to the pipeline, squeezes the flexible sleeves 2, and is closed with a lock 7 with a remote control open. After transporting the equipped pipeline afloat to the diving site, lock 7 is opened, and then alternately, layer-by-layer, flexible permeable sleeves 2 are filled with liquid ballast by means of direct hydronamic from flexible slurry pipeline 8, mineral material, such as sand or gravel. Liquid ballast is collected by a slurry pipeline, for example, from the bottom of water 1a.

At the same time, each successive filled hose gradually increases the deflection of the submerged pipeline section between its supported ends until the pipeline is completely submerged at the bottom of the reservoir.

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Compiled V.Kopaev Editor N.Dankulich Tehred I.SGopoEich Proofreader G.Reshetnik

Order 1693/38 Circulation 880 Subscription VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Branch PSh1 Patent, Uzhgorod, st. Project, 4

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Claims (2)

1. METHOD FOR STRUCTURING THE UNDERWATER PIPELINE, which consists of equipping it along the entire length with a bundle of flexible hoses, afloat, immersion by layer-by-layer filling of the internal cavities of the hoses with liquid ballast, characterized in that, in order to simplify and increase the efficiency of the process of constructing the underwater section pipelines, flexible hoses are water-permeable and placed on the outer surface of the pipeline, and mineral soil is used as ballast to fill the hoses. 2. The method according to claim 1, characterized by the fact that the flexible hoses are filled with hydraulic spraying soil. SU. „, 1222965