MAIN PRINCIPLES ON ANALYSIS AND DESIGN OF BURIED BALLASTED PIPELINES ON MARSHES

摘要

State of stress and deformation of buried oil-gas pipelines under, operation must meet appointed requirements on strength., deformability, general stability, etc. Fulfillment of those requirements while designing main and field pipelines in conditions of marshes and marshy soils is very problematical. The cause lies both in weak knowledge of peat reaction to longitidual and lateral displacements of the pipe and in impossibility on account of that to analyze the pipe state of stress and deformation taking into consideration the joint pipe-soil deformation. Wide research into pipe-peat interaction has been carried out at the Institute of Construction (Republic of Komi, Russia). In the paper there are enumerated main principles on design, analysis and engineering of buried ballasted pipelines on marshes, which have been worked at the Institute. The practical value of the work results for improvement of pipelines reliability under operation is emphasized in the paper, too.