Landslides and non-stable condition of ground are significant hazards for underground main pipelines, because landslides lead to shift of ground along and crossing direction of pipeline. Underground pipelines may be deformed axially or in radials due to landslide. Such deformations frequently lead to leakages from pipeline which in its turn can be serious hazard for environment and cause necessity to halt the pipeline functioning. Upon selection of pipelines route the areas under effect of landslide should be excluded. If such exclusion is impossible they should be researched to accept relevant measures. The article is devoted to development of method for constructing underground pipeline taking into account hazard of landslide processes. As a result of held analysis the condition determining possible utmost effect of leakages and ruptures due to landslides are defined. The recommendations to achieve possible low level of effect of seismic hazard on pipeline are formulated. According to these recommendations some unwanted functional dependence between major parameters obtained as a result of held researches should be removed in practice. The route of pipeline should be divided on non-equal parts in line with given order and increase of length of these parts should be accompanied by decrease of horizontal shifts. More lengthy parts of pipeline should be installed at farthest distance from zone of possible seismic activity leading to landslides developing in some order. The proposed method of pipeline installation could lead to minimum possibility of such events as leakages and rupture caused by landslides.
References
1. Marinos V., Stoumpos G., Papathanassiou G. et al., Landslide geohazard for pipelines of natural gas transport, Bulletin of the geological society Greece, 2016, V. 50, no. 2, pp. 845-864, doi:https://doi.org/10.12681/bgsg.11791.
2. Konovalov A., Gensiorovskiy Y., Lobkina V. et al., Earthquake – Induced landslide risk assessment: an example from Sakhalin Island, Russia, Geosciences, 2019, V. 9, 305 p., http://doi:10.3390/geosciences9070305
3. Froude M.J., Petley D.N., Global fatal landslide occurrence from 2004 to 2016, Nat. hazards Earth Syst. Sci., 2018, V. 18, pp. 2161–2181, http://doi.org/10.5194/nhess-18-2161-2018.
4. Sweeney M., Terrain and geohazard challenges facing onshore oil gas pipelines, Thomas Telford Publishing, 2005, 758 p.
5. Wenkai F., Runqiu H., Jintao L. et al., Large – scale field trial to explore landslide and pipeline interaction, The Japanese Geotechnical, 2015, http://dx.doi.org/10/1016/j.sandf.2015.10.011 .
6. De Risi R., De Luca F., Oh-Sung Kwon, Sextos A., Scenario-based seismic risk assessment for buried transmission gas pipelines at regional scale, J. Pipeline Syst. Eng. Pract., 2018, V. 9(4), DOI: 10.1061/(ASCE)PS.1949-1204.0000330
7. Ferenou M.D., Sakellariou M., Matziaris V., Charalambous S., Multi-hazard loss estimation methodology-earthquake model: HAZUS MR4 technical manual, Washington, DC: FEMA, 2004.
8. Seismic fragility formulations for water systems, 2001, April, URL: https://www.americanlifelinesalliance.com/pdf/Part_1_Guideline.pdf.
9. Asadov Kh.G., Synthesis of optimal subsystems for processing measurement information based on and parallel converters (In Russ.), Izmeritel'naya tekhnika, 2002, no. 2, pp. 19–21.
10. Asadov Kh.G., Application of the principle of parametric dimensionality reduction for the synthesis of one subclass of information systems and planning a measurement experiment (In Russ.), Izmeritel'naya tekhnika, 2003, no. 6, pp. 3–6.
