SU1670280A1

SU1670280A1 - Method of laying submerged pipeline

Info

Publication number: SU1670280A1
Application number: SU884370543A
Authority: SU
Inventors: Геннадий Васильевич Ничевилов; Юрий Павлович Яблонский
Priority date: 1988-01-25
Filing date: 1988-01-25
Publication date: 1991-08-15

Abstract

Изобретение относитс к строительству и может быть использовано при сооружении подводных трубопроводов. Цель изобретени - снижение усили протаскивани трубопровода за счет создани дополнительного усили путем перемещени вдоль трубопроводной плети приподн тых ее участков в направлении протаскивани . Трубопровод 1 оснащают понтонами 3, соединенными гибкой магистралью 4 дл прокачивани по ней воды и воздуха. Трубопровод 1 протаскивают за счет создани в его головном участке волны 2 деформации закачкой воздуха в понтоны 3 и толкающим усилием в концевом участке трубопровода 1. Закачиванием воды в понтоны 5 создают участок с отрицательной плавучестью. Переменной закачкой воды и воздуха в понтоны добиваютс продвижени сформированных волн деформации и, следовательно, трубопровода вперед. 2 з.п.ф-лы, 8 ил.The invention relates to the construction and can be used in the construction of underwater pipelines. The purpose of the invention is to reduce the drag force of a pipeline by creating additional force by moving its elevated portions along the pipe line in the direction of dragging. Pipeline 1 is equipped with pontoons 3 connected by a flexible pipe 4 for pumping water and air through it. Pipeline 1 is pulled by creating in its head section a wave 2 of deformation by pumping air into the pontoons 3 and pushing force in the end section of the pipeline 1. By pumping water into the pontoons 5, a section with negative buoyancy is created. By alternating the injection of water and air into the pontoons, the formed deformation waves and, consequently, the pipeline are advanced. 2 hp ff, 8 ill.

Description

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Claims

Claim

1. The method of laying an underwater pipeline, which consists in the development of an underwater trench, preparation of the trigger path and the pipe whip, its pulling with the formation of raised above the bottom of the trench and adjacent sections, characterized in that, in order to reduce energy consumption by reducing the pulling force by moving along the pipeline whip of its raised sections in the direction of pulling, the formation of the raised above the bottom of the trench and adjacent sections of the pipe whip is carried out research giving them positive and negative buoyancy.

2. The method according to π. 1, characterized in that the positive and negative buoyancy sections of the pipeline whip create the installation of pontoons on it with adjustable buoyancy. 5

3. The method according to p, 1, characterized in that the positive and negative buoyancy of the sections of the pipeline whip create a sequential injection of gaseous and liquid medium into it.

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FIG. 5