METHOD TO INSTALL PIPELINE IN WATERLOGGED AREA Russian patent published in 2012 - IPC F16L1/28 

FIELD: construction.

SUBSTANCE: method to install a pipeline on a waterlogged area includes determination of borders of areas of mineral and peat soils, underground installation in mineral soil and surface installation on peat surface in a bank as swamp changes with pipeline jamming on borders of areas adjacent to the swamp, while the pipeline profile is arranged as it changes from the underground into the surface section as curvilinear with minimum radii of its bend. Curvilinear transition surfaces of the pipeline are arranged with the possibility of their rotation relative to the axis of adjoining sections of the pipeline in mineral soil with the help of sealed bushing joints, and a pipeline section located on the swamp in the initial position is placed rectilinearly with deviation of its axis by a rated angle φ from the vertical plane stretching via longitudinal axes of sections that adjoin to it in the mineral soil. The rectilinear section of the pipeline with flexible traction rods are connected with supports placed at the side, to which a rectilinear section of the pipeline is diverted with connected curvilinear transition sections. Length l of flexible traction rods, distance I0 of the longitudinal axis of the support from the axis of adjoining sections and the angle φ of deviation of the surface section of the pipeline relative to the axis of adjoining jammed sections are selected on the basis of given ratios. Flexible rods are fixed accordingly to a rectilinear section of the pipeline installed on the swamp in its upper part and to the lower edges of supports.

EFFECT: reduced labour intensiveness of works during installation of a pipeline, higher reliability of its operation.

3 cl, 4 dwg