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ANALYSIS OF RIVERBED DEFORMATIONS IN OIL TRUNK LINE UNDERWATER PASSAGES

Yulia Kuznecova, Anatoly Pozdeev

First published: 2020-09-20https://doi.org/10.5593/sgem2020/3.1/s12.002View metrics

Abstract

The paper studies theoretical and experimental issues of improving scour protection facilities of oil trunk line underwater passages. External influences on the stability of oil trunk line underwater passages were analyzed. Based on the analysis results, the impact of hydraulic processes on riverbed deformations in the underwater passage of the Surgut-Polotsk oil trunk line was evaluated. Also automated calculations of hydraulic and riverbed effects of the bottom soil scour in the Mathcad application environment were performed. As a result of the analysis of the riverbed scour processes, using a developed IT model, we calculated dynamic characteristics that determine the operability of pipelines. Also we justified the need to improve the protection of pipelines when trench-laying in the symmetric and asymmetric flow. In Mathcad, we calculated velocity fields for laying pipelines in a trench with a trapezoidal cross-section, determined a drag coefficient depending on the Reynolds number based on spline interpolation, and established dependences of a lift coefficient on a relative distance between a trench bottom and a pipe bottom. We estimated a variable hydrodynamic force and an added-liquid mass for pipeline vibrations under limited conditions in the case of periodic vortex separation and formation of a Benard-von Karman vortex street. Based on the solution of the differential equation of pipeline vibrations, a resonant length and frequency characteristics leading to the destruction of the underwater passage were established. As a result of experimental studies of the dynamic flow effect on the pipeline section, the adequacy of the automated model of the flow effect on the underwater passage was verified. When justifying parameters of an experimental installation and a measuring complex, the conditions of hydraulic modeling were taken into account. After statistical processing of the experiment results, we proposed engineering solutions to prevent riverbed deformations in the oil trunk line underwater passage.

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Publication details

Title
ANALYSIS OF RIVERBED DEFORMATIONS IN OIL TRUNK LINE UNDERWATER PASSAGES
Authors
Yulia Kuznecova, Anatoly Pozdeev
Proceedings
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 20th International Multidisciplinary Scientific GeoConference Proceedings SGEM 2020, Water Resources. Forest, Marine and Ocean Ecosystems
Publisher
STEF92 Technology
Year
2020
Pages
11-18
SWS Citekey
Kuznecova2020121118
ISSN
1314-2704
ISBN
978-619-7603-08-8
Language
en
Publication type
Conference Paper
Keywords
oil trunk lineunderwater passagescour protection facilitiesdifferential equations of pipeline vibrationshydraulic modeling
References11

  1. P.P. Borodavkin, B.I. Kim, Environmental Protection during the Construction and Operation of Trunk Lines, Moscow: Nedra, 1981, 345 p.

  2. K.V. Grishanin, Stream Dynamics, Leningrad: Gidrometeoizdat, 1979, 312 p.

  3. Yu.А. Kuznetsova, A.V. Parfenov, Development of Scour Protection Facilities of Oil Trunk Line Underwater Passages, Research. Technology. Innovation: Collection of Papers, Yoshkar-Ola: Mari State Technical University, 2011, P. 299-301.

  4. I.I. Levi, Hydraulic Phenomena Modeling, Moscow-Leningrad: Gosenergoizdat, 1966, 210 p.

  5. N.I. Makkaveev, R.S. Chalov, Riverbed Evolution, Moscow: Publishing House of the Lomonosov Moscow State University, 1986, 264 p.

  6. Melioration and Water Industry. Volume 5. Water Industry: Reference Book / I.I. Borodavchenko, Yu.A. Kamensky, I.A. Shiklomanov et al.; ed. by I.I. Borodavchenko, Moscow: Agropromizdat, 1988, 399 p.

  7. М.A. Mikhalev, Engineering Hydrology. Land Water Pollution. Mathematical Foundations of Hydrological Calculations: Teaching Aid. St. Petersburg: St. Petersburg State Polytechnic University, 1995, 96 p.

  8. A.G. Pozdeev, Analysis of the Consequences of Destruction of Oil Pipeline Underwater Passages and Their Impact on the Ecological State of Watercourses/A.G. Pozdeev, Yu.A. Kuznetsova, Yu.V. Loskutov, A.E. Trukhan // Bulletin of the Mari State Technical University. "Forest. Ecology. Human" series, No. 1, 2011, P. 59-74.

  9. A.G. Pozdeev, Riverbed Evolution Analysis to Justify the Environmental Safety of Oil Pipeline Underwater Passages / A.G. Pozdeev, Yu.A. Kuznetsova, Yu.V. Loskutov, A.E. Trukhan, V.V. Krasheninnikov // Melioration and Water Industry, No. 2, 2011, P. 39-42.

  10. A.G. Pozdeev, Improving the Assessment of Ecological State of Oil Line Pipes in Territories with Intensive Karstification/ A.G. Pozdeev, S.Ya. Alibekov, S.F. Kirkin, Yu.A. Kuznetsova // Bulletin of the Mari State Technical University. "Forest. Ecology. Human" series, No. 2, 2011, P. 84-93.

  11. P.M. Rodionov, Research Basis: Teaching Aid / P.M. Rodionov, Leningrad: Forest Techniacal Academy, 1989, 100 p.

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